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| Freescale Semiconductor, Inc. Technical Data MC44BC375/D Rev. 2.6 01/2003 MC44BC375/U/J/T PLL Tuned VHF Audio/ Video High Integration Modulator ICs MC44BC375/U/J/T SO16 Package Freescale Semiconductor, Inc... Ordering Information Device MC44BC375UD, R2 MC44BC375JD, R2 MC44BC375TD, R2 Temp. Range -20C to +85C Package SO16NB NOTE: For tape and reel, add R2 suffix. Contents List 1 2 3 4 5 6 Features . . . . . . . . . . . . . 2 Device Overview . . . . . . 3 Maximum Ratings . . . . . 4 Thermal Rating . . . . . . . 4 Electrostatic Discharge 4 Electrical Characteristics 5 7 Pin Selection . . . . . . . . . 6 8 High Frequency Characteristics (U Version) 6 9 Video Characteristics . . 7 10 Audio Characteristics . . 7 11 Characterization Measurement Conditions 7 12 Modulator Functionality 11 13 Pin Circuit Schematics 14 14 MC44BC375U Application Schematic 15 15 Markings and Case Diagrams 16 This modulator circuit is for use in VCRs, set top boxes and similar devices. The device differences are as follows: * * * MC44BC375U VHF [CH3 & CH4] (Americas) MC44BC375J VHF [CH1 & CH2] (Japan) MC44BC375T VHF [CH13] (Taiwan) CHS PSS 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 SFS PLLFLT TVOVCC TVOUT GND VCCA VIDEO PSave/LO LOP XTAL GND PREEM AUDIO SPLFLT Figure 1. MC44BC375U/J/T Pin Connection Diagram This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice. (c) Motorola, Inc., 2002. All rights reserved. For More Information On This Product, Go to: www.freescale.com Features Freescale Semiconductor, Inc. 1 Features Channels are selectable using pin Channel Selection (CHS) and tuned by a PLL. They do not require any external tank circuit components thus reducing the sensitivity of the PCB design and the need for external adjustments. The PLL obtains its reference from a 4MHz crystal oscillator. The sound subcarrier is also generated on-chip without external components. The 4.5MHz or 5.5MHz Sound frequency is selectable using pin Sound Frequency Selection (SFS). The Picture to Sound subcarrier ratio is also selectable by pin Picture to Sound selection (PSS) to either 14dB or 16dB. A Power Save function is selectable via pin Psave/LO which turns off all internal VCOs and mixers and simultaneously switches ON the Logic Output Port (LOP). No external Varicap Diodes/ Inductor nor other tuned components are needed. The MC44BC375/U/J/T also has the following features: * Channel selected by CHS pin Integrated On-Chip Oscillator - No external tank circuit Extremely Low External Components Count Adjustable Video Modulation Depth (85% w/o adjustment) Peak White Clip Programmable Picture/Sound Carrier Ratio (14dB & 16dB) selected by PSS pin Integrated On-chip Programmable Sound Subcarrier Oscillator (4.5 & 5.5MHz selected by SFS pin) No external varicaps Modulator Standby Mode selected by Psave/LO pin Transient Output Inhibit During PLL Lock-up at Power-on Logic Output Port selected by Psave/LO pin (Antenna Switch Driver) Extremely Robust ESD protection, Minimum 4kV, typical 6kV. Available in 80 dBuV RF output level (MC44BC375UA). * * * * * * * * * * * Freescale Semiconductor, Inc... 2 MC44BC375/U/J/T Technical Data For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. Device Overview 2 Device Overview Figure 2 shows a simplified block diagram of the MC44BC375U/J/Tdevice. The MC44BC375U/J/T device has two main sections: 1. A modulator section which accepts audio and video inputs and modulates the VHF carrier. 2. A PLL section to synthesize the UHF/VHF output channel frequency (from an integrated UHF oscillator, divided for VHF output) The high frequency BICMOS technology permits integration of tank circuit and certain filtering functions. LOP VIDEO SPLLFLT 3 10 Peak White Clip Clamp 8 MODULATOR SECTION Freescale Semiconductor, Inc... TVOVCC 14 75 Video Modulator LPF 7 31.25kHz Sound PFD Sound Oscillator and FM Modulator Audio Ampli AUDIO 6 PREEM TVOUT 13 Prog. Divider LPF ALC LPF PSS Power save Psave/ LOP 11 5 SFS VCCA GND 9 Sound Modulator Snd Freq Select - SFS Test Mode Divider 16 VHF Divider Channel Select CHS VCO & PLL SECTION PLL 1 UHF OSC. PS1/2 Select - PSS 2 12 GND Prescaler /8 CHS Prog. Divider Phase Comp. 31.25kHz Ref Divider /128 4Mhz XCO 15 PLLFLT 4 XTAL Figure 2. MC44BC375/U/J/T Block Diagram MOTOROLA MC44BC375/U/J/T Technical Data For More Information On This Product, Go to: www.freescale.com 3 Maximum Ratings Freescale Semiconductor, Inc. 3 Maximum Ratings Sym Vcc Tamin Tamax Supply voltage Minimum operating ambient temperature Maximum operating ambient temperature Parameter Value Unit 6 -20 85 -65 150 150 V oC oC oC o This device contains protection circuitry to guard against damage due to high static voltage or electric fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high impedance circuit. For proper operation, input and output voltages should be constrained to the ranges indicated in the Recommended Operating Conditions. Tstgmin Minimum storage temperature Tstgmax Maximum storage temperature Tj Junction Temperature C C Maximum ratings are those values beyond which damage to the device may occur. For functional operation, values should be restricted to the Recommended Operating Condition. Meets Moisture Sensitivity Level 1, no dry pack required. Freescale Semiconductor, Inc... 4 Thermal Rating Sym Rthja Parameter Thermal resistance from Junction to Ambient Value 140 Unit C/W 5 Electrostatic Discharge Electrostatic Discharge (ESD) tests are done on all pins. Sym ESD ESD Parameter MM (Machine Model) - MIL STD 883C method 3015-7 HBM (Human Body Model) - MIL STD 883C method 3015-7 Min 200 4000 Typ 500 6000 Unit V V 4 MC44BC375/U/J/T Technical Data For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. Electrical Characteristics 6 Electrical Characteristics * * * * A = 100% Tested B = 100% Correlation tested C = Characterized on samples D = Design parameter 6.1 Specification Conditions Unless otherwise stated: Vcc = 5.0V, T amb. = 25C.Video input 1Vp-p, 10 step greyscale. RF inputs / outputs into 75 load. SPECIFICATIONS ONLY VALID FOR ENVELOPE DEMODULATION Power Supply Parameters Min 4.5 40 3 Typ 5.0 47 5 Max 5.5 55 7 Unit V mA mA All sections active PSave/LO=LO Notes Type B A A Freescale Semiconductor, Inc... Operating Supply Voltage range Total Supply Current Total Standby Mode Supply Current DC Parameter Threshold voltage level on pins CHS, PSS, SFS, PSave/LO Sound Comparator Charge Pump Current: During locking When locked RF Comparator Charge Pump Current Crystal Oscillator Stability - negative resistance Logic Output Port: Saturation voltage @ I=15mA Leakage current Min Typ 2.1 Max Unit V Type C A A A D A A 7 0.7 60 1 - 10 1 100 210 - 12 1.5 150 300 1 A A A K mV uA MOTOROLA MC44BC375/U/J/T Technical Data For More Information On This Product, Go to: www.freescale.com 5 Pin Selection Freescale Semiconductor, Inc. 7 Pin Selection Pin Nb 1 2 9 16 Pin Name CHS PSS PSave/LO SFS Device MC44BC375U MC44BC375J MC44BC375T MC44BC375U/J/T MC44BC375U/J/T MC44BC375U/J/T CH4 CH2 CH13 14dB Power save Mode LOP pin LO (Low voltage) 5.5Mhz LO (grounded) CH3 CH1 CH13 16dB Normal Operation LOP pin HI (High impedance 4.5Mhz HI (Open or +5V) By default (open condition), all pins are "HI". 7.1 Test Modes Freescale Semiconductor, Inc... Pin CHS DC level Vcc + 0.3V Vcc + 1.1V Description Low frequency testing (RF frequency divided by 4 for MC44BC375U/J, and divided by 8 for MC44BC375T) Base band test mode (DC drive applied to modulators) Transient Output Inhibit Disabled Sound Oscillator OFF Force UHF and Sound PLL Upper current source Force UHF and Sound PLL Lower current source PSS SFS VIDEO Vcc + 1Vbe Vcc + 1Vbe Vcc + 0.3V Vcc + 1.1V NOTE: Test modes are intended for manufacturing test purpose only and not to be be used for normal application. 8 High Frequency Characteristics (U Version) For all the following specifications and unless otherwise stated: Vcc = 5.0V, T amb. = 25C.Video input 1Vp-p, 10 step greyscale.RF inputs / outputs into 75 load.SPECIFICATIONS ONLY VALID FOR ENVELOPE DEMODULATION. Measured on U version on both channel 3 and 4. See Section 11, "Characterization Measurement Conditions" on page 7 for "C" type parameters. Parameter TV OUT output level Sound subcarrier Harmonics (fp+n*fs) Second Harmonic of chroma subcarrier. Ref Picture carrier Using red EBU bar 2nd harmonic 3rd harmonic 1/2*Fo - 1/4*Fo - 3/2*Fo - 3/4*Fo No video or sound modulation No video or sound modulation -70 -82 Test Conditions Min 74 Typ 76 -73 -65 -65 30 66 Max 79 -65 -55 -60 42 69 27 -62 -75 Unit dBV dBc dBc dBc dBV dBV dBV dBc dBc Type B C C C C C C C C Chroma/Sound intermodulation: fp + (fsnd-fchr) Using red EBU bar Fo (picture carrier) Harmonics (See Note1) Out Band (picture carrier) Spurious In band spurious (Fo +/- 5 MHz range) 4 MHz Crystal Spurious (Fo +/- 4 MHz) Note: 1: Picture carrier harmonics are highly dependant on PCB layout and decoupling capacitors. 6 MC44BC375/U/J/T Technical Data For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. Video Characteristics 9 Video Characteristics Parameter Video bandwidth Video input level Video input current Video input impedance Video S/N Differential Phase Differential Gain Luma/Sync ratio Video modulation depth Input ratio 7.0:3.0 Video input level=1.0 Vcbvs Video Modulation Depth for Video=1.4 Vcbvs 6.8/3.2 80 90.5 Unweighted Weighted Test Conditions Reference 0dB at 100kHz, measured at 5MHz 75Ohm load Min -1.5 -- -- 500 49 56 Typ -0.5 -- 0.2 -- 52 60 +/-1 1 -- 85 95 Max -- 1.5 1 -- -- -- +/-5 5 7.2/2.8 90 99.5 Unit dB Vcvbs A K dB dB deg % -- % % Type C D A A C C C C B B B Freescale Semiconductor, Inc... Peak White Clip 10 Audio Characteristics All audio measurement use specified pre-emphasis circuit. Parameter Picture to Sound ratio Picture to Sound ratio difference PSS (Pin2) = HI PSS (Pin2) =LO between PSS = HI and PSS = LO Test Conditions Min 14 12 1.5 Typ 16 14 2.0 Max 18 16 2.5 Unit Type dB dB dB B B Using specific pre-emphasis circuit - Audio Input: 1Khz @ 205 mVrms Audio FM Modulation Depth Fs = 4.5 MHz (100% Modulation = +/- 25 kHz FM Deviation) Fs = 5.5 MHz (100% Modulation = +/- 50 kHz FM Deviation) Audio input resistance Audio Frequency response Audio Distortion FM (THD only) Audio S/N with Sync Buzz FM 0dB ref @1kHz Measure from 50Hz to 15kHz At 1 kHz and 100% mod (+/- 50 kHz) - No Video 75 75 45 -2.5 50 85 85 55 0.3 53 95 95 61 +2 1 % % k dB % dB B B A C C C 11 Characterization Measurement Conditions Device default configuration unless otherwise specified: * * * Sound subcarrier frequency = 5.5Mhz Picture-to-sound carrier ratio = 12dB CH3 & CH4 frequencies RF Inputs / Output into 75ohm Load using a 75 to 50 ohm transformation.Video Input 1V pk-pk.Audio pre-emphasis circuit engaged. MOTOROLA MC44BC375/U/J/T Technical Data For More Information On This Product, Go to: www.freescale.com 7 Characterization Measurement Conditions Freescale Semiconductor, Inc. Measurement Set-up TVOUT Output Level Device and Signals Set-up Video: 10 steps grey scale No audio Measured picture carrier in dBuV with the HP8596E Spectrum Analyzer using a 75 to 50 ohm transformation, all cables losses and transformation pads having been calibrated. Measurement used as a reference for other tests: TVout_Ref Sound Subcarrier Harmonics Measure in dBc second and third sound harmonics levels in reference to picture carrier (TVout_Ref). Picture carrier Sound carrier Video: 10 steps grey scale No Audio signal Sound 2nd harm Sound 3rd harm Fo +5.5Mhz +11Mhz +16.5Mhz Freescale Semiconductor, Inc... Second Harmonics of Chroma subcarrier Measure in dBc, in reference to picture carrier (TVout_Ref), second harmonic of chroma at channel frequency plus 2 times chroma No audio Video: a 700mVpk-pk 100Khz sinusoidal frequency, resulting in the following spectrum. signal is inserted on the black level of Picture carrier active video area. Frequency Frequency 100kHz 100Khz 700mVpkpk 700mV pk-pk Chroma carrier Sound carrier Chroma 2nd Harmonic Fo +4.43Mhz +5.5Mhz +8.86Mhz Chroma/Sound intermodulation No audio signal Video: 700mVpk-pk 100Khz sinusoidal signal inserted on the black level of active video area.This is generated using a Rohde & Schwarz Video Generator SAF and inserting the required frequency from a RF Signal generator. Frequency Frequency 100kHz 4.43Mhz 700mVpkpk 700mV pk-pk Measure in dBc, in reference to picture carrier (TVout_Ref), intermodulation product at channel frequency plus the sound carrier frequency (+5,5Mhz) minus the chroma frequency (-4,43Mhz), resulting in the following spectrum. Intermodulation product is at the channel frequency +1,07Mhz. Picture carrier Chroma carrier Chroma/Sound Intermod. Sound carrier Fo +1.07Mhz +4.43Mhz +5.5Mhz Picture Carrier Harmonics 8 MC44BC375/U/J/T Technical Data For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. Characterization Measurement Conditions Device and Signals Set-up Measurement Set-up Measure in dBc, in reference to picture carrier (TVout_Ref), second and third harmonic of channel frequency, resulting in the following spectrum. Picture carrier No Video signal No Audio signal 2nd harmonic 3rd harmonic Fo 2Fo 3Fo Out of Band Spurious Measure in dBuV spurious levels at 0.25, 0.5, 0.75 and 1.5 times channel frequency, resulting in the following spectrum Measure from 40Mhz to 1Ghz. Freescale Semiconductor, Inc... Picture carrier No Video signal No Audio signal Spurious Fo/4 Fo/2 Fo*3/4 Fo Fo*3/2 In Band Spurious / 4Mhz Crystal Spurious No Video signal No Audio signal Measure in dBc, in reference to picture carrier (TVout_Ref), spurious levels falling into video bandwidth Fo+/-5Mhz (15.125Khz & 31.25Khz from reference dividers and 4Mhz from crystal). Video Bandwidth No audio Video: 600mVpk-pk sinusoidal signal inserted on the black level of active video area. The Video signal is demodulated on the spectrum analyzer, and the peak level of the 100Khz signal is measured as a reference. The frequency is then swept from 100Khz to 5Mhz, and then the difference in dBc from the 100Khz reference level is measured. Weighted Video Signal to Noise Video: 100% White video signal - 1Vpkpk. No Audio signal This is measured using a Rohde & Schwarz AMFS Demodulator in B/G (using a CCIR Rec. 567 weighting network, 100kHz to 5MHz band with sound trap and envelope detection, and a Rohde & Schwarz UAF Video Analyzer. The Video Analyzer measures the ratio between the amplitude of the active area of the video signal (700mV) and the noise level in Vrms on a video black level which is show below. VideoS/N is calculated as 20 x log(700 /N) in dB N noise level in Vrms Unweighted Video Signal to Noise Same as above with CCIR filter disabled. Same as above. Video Differential Phase MOTOROLA MC44BC375/U/J/T Technical Data For More Information On This Product, Go to: www.freescale.com 9 Characterization Measurement Conditions Device and Signals Set-up Video: 5 step Grey Scale- 1Vpk-pk. No Audio signal This is measured using a Rohde & Schwarz AMFS Demodulator in B/G (using a CCIR Rec. 567 weighting network, 100kHz to 5MHz band with sound trap, and envelope detection, and a Rohde & Schwarz UAF Video Analyzer. Freescale Semiconductor, Inc. Measurement Set-up On line CCIR 330, the video analyzer DP measure consists of calculating the difference of the Chroma phase at the black level and the different chroma subcarrier phase angles at each step of the greyscale. The largest positive or negative difference indicates the distortion. the largest positive or negative difference DIFF PHASE = the phase at position 0 * 100% The video analyzer method takes the worst step from the first 4 steps. Video Differential Gain On line CCIR 330 shown below, the video analyzer DG measure consists of calculating the difference of the Chroma amplitude at the black level and the different amplitudes at each step of the greyscale. The largest positive or negative difference indicates the distortion. Freescale Semiconductor, Inc... Video: 5 step Grey Scale- 1Vpk-pk. No Audio signal This is measured using a Rohde & Schwarz AMFS Demodulator in B/G (using a CCIR Rec. 567 weighting network, 100kHz to 5MHz band with sound trap and envelope detection, and a Rohde & Schwarz UAF Video Analyzer. 0 1 2 3 4 5 5-step Greyscale with Chroma subcarrier superimposed (not to scale), line CCIR 330. the largest positive or negative difference DIFF GAIN = the amplitude at position 0 * 100% The video analyzer method takes the worst step from the first 4 steps. CCIR line 330 corresponds to FCC line 17 in NTSC/M standard Video Modulation Depth This is measured using a HP8596E Spectrum Analyzer with a TV Trigger option, allowing demodulation and triggering on any specified TV Line. The analyzer is centred on the maximum peak of the Video signal and reduced to zero Hertz span in Linear mode to demodulate the Video carrier. A(mV) A ( 6-10mV) No Audio signal Video: 10 step grey scale B(mV) B (0.6 - 3mV) TV Line Demodulated by Spectrum Analyzer-BG standard The Modulation Depth is calculated as (A-B)/A x 100 in% Picture to Sound ratio Measure in dBc sound carrier in reference to picture carrier (TVout_Ref) for "PS" bit=0 (PS=12dB typical) and for "PS" bit=1 (PS=16dB), Picture carrier No Video signal No Audio Signal "PS" bit set to 0 and 1 Sound carrier Fo +5.5Mhz Audio Modulation Depth - FM Modulation 10 MC44BC375/U/J/T Technical Data For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc.Modulator Functionality Device and Signals Set-up Video Black Level Audio signal: 1Khz, 205mVrms. This is measured using a Rohde & Schwarz AMFS Demodulator in B/G and a HP8903A Audio Analyzer at 1kHz Measurement Set-up The audio signal 205mV at 1kHz is supplied by the Audio Analyzer, and the FM demodulated signal deviation is indicated on the Demodulator in Khz peak. This value is then converted in% of FM deviation, based on specified standards. Audio Frequency response The audio signal 1KHz 100mVrms is supplied by the Audio Analyzer, demodulated by the Demodulator and the audio analyzer measures the Video Black Level AC amplitude of this demodulated audio signal: this value is taken as a Audio signal: 50Hz to 15KHz, 100mVrms reference (0dB). This is measured using a Rohde & The audio signal is then swept from 50Hz to 15KHz, and demodulated Schwarz AMFS Demodulator in B/G and AC amplitude is measured in dB relative to the 1KHz reference. a HP8903A. Audio pre-emphasis and de-emphasis circuits are engaged, all audio analyzer filters are switched OFF. Freescale Semiconductor, Inc... Audio Distortion FM The input rms detector of the Audio Analyzer converts the ac level of the combined signal + noise + distortion to dc. It then removes the fundamental signal (1kHz) after having measured the frequency. The Audio: 1Khz, adjustable level output rms detector converts the residual noise + distortion to dc. The dc Video Black Level voltmeter measures both dc signals and calculates the ratio in% of the This is measured using a Rohde & Schwarz AMFS UHF Demodulator in B/G two signals. and a HP8903A Audio Analyzer at 1kHz. The output level of the Audio analyzer is ADist = ( Distorsion + Noise ) ( Distorsion + Noise + Signal ) varied to obtain a deviation of 50kHz indicated on the Demodulator. Audio Signal to Noise The Audio Analyzer alternately turns ON and OFF it's internal audio source to make a measure of the Audio signal plus noise and then another measure of only the noise. Audio: 1Khz, adjustable level The measurement is made using the internal CCIR468-2 Filter of the Video: EBU Color Bars Audio Analyzer together with the internal 30+/-2kHz (60dB/decade) This is measured using a Rohde & Schwarz AMFS Demodulator in B/G and Lowpass filters. a HP8903A Audio Analyzer at 1kHz. The The AMFS demodulator uses a quasi-parallel demodulation as is the case in a normal TV set. In this mode the Nyquist filter is bypassed and output level of the Audio analyzer is the video carrier is used without added delay to effectuate intercarrier varied to obtain a Modulation Deviation conversion. In this mode the phase noise information fully cancels out of 25kHz indicated on the AMFS and the true S/N can be measured Demodulator. ASN ( dB ) = 20 x log ( Signal + Noise ) ( Noise ) 12 Modulator Functionality 12.1 Power Supply The two device Vccs (pins 11 and 14) must be applied at the same time to ensure all internal blocks are correctly biased. All other pins must not be biased before Vcc is applied to device. MOTOROLA MC44BC375/U/J/T Technical Data For More Information On This Product, Go to: www.freescale.com 11 Modulator Functionality Freescale Semiconductor, Inc. 12.2 Test modes The MC44BC375U/J/T test modes are enabled by any voltage level higher than Vcc on pins CHS, PSS, SFS and VIDEO. Care must be taken in the application to not reach levels higher than Vcc on those pins. 12.3 Standby modes During standby mode, the modulator is switched to low power consumption: the sound oscillator, UHF oscillator and VHF dividers, video and sound modulator sections bias are internally turned OFF. Modulator is programmed in standby mode when pin 9 PSave/LO is set to "LO" level (See PIN SELECTION section). 12.4 Logic Output Port Freescale Semiconductor, Inc... The Logic Output Port is used to control an external switch (such as an antenna switch or an attenuator). This pin is an open collector transistor able to drive up to 15mA at low voltage. LOP level is switched between "HI" and "LO" level with pin 9 "Psave/LO" (See PIN SELECTION section). 12.5 Transient Output Inhibit To minimize the risk of interference to other channels while the UHF PLL is acquiring a lock on the desired frequency, the Sound and Video modulators are turned OFF at power-ON from zero (i.e. Vcc is switched from 0V to 5V or device is switched from "Standby mode" to "Normal operation"). There is a time-out of 263ms until the output is enabled. This lets the UHF PLL settle to its programmed frequency. During the 263ms time-out, the sound PLL current source is set to 10A typical to speed up the locking time; after the 263ms time-out, the current source is switched to 1A. Use care when selecting loop filter components, to ensure the loop transient does not exceed this delay. For test purposes, it is possible to disable the 263ms delay (see TEST MODES section). 12.6 Video section The modulator requires a composite video input with negative going sync pulses and a nominal level of 1Vp-p. This signal is AC coupled to the video input where the sync tip level is clamped. Video modulation depth typical value is given for 1VCBVS input level. It can be adjusted to any lower value by simply adding a resistive divider at video input, resulting in a lower signal seen by the video input stage. The video signal is then passed to a peak white clip circuit whose function is to soft clip the top of the video waveform if the amplitude from the sync tip to peak white goes too high. In this way overmodulation of the carrier by the video is avoided. The clipping function is always engaged. 12.7 Sound section The multivibrator oscillator is fully integrated and does not require any external component. An internal low pass filter and matched structure give very low harmonics level. The sound modulator system consists of an FM modulator incorporating the sound subcarrier oscillator. The audio input signal is AC coupled into the amplifier which then drives the modulator. 12 MC44BC375/U/J/T Technical Data For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc.Modulator Functionality The audio pre-emphasis circuit is a high-pass filter with an external capacitor C1 and an internal resistor (100kOhms typical). The recommended capacitor value (750pF) is for M/N standards; time constant is 75s. It is 470pF for B/G standards (50s). Audio bandwidth specification is for 50Hz to 15Khz range, with pre-emphasis circuit engaged. Without this pre-emphasis circuit, it is possible to extend the audio bandwidth to the high frequencies as there is no internal frequency limitation (stereo application). 12.8 PLL Section -- Dividers The reference divider is a fixed divide by 128 resulting in a reference frequency of 31.25Khz with a 4.0Mhz crystal. The 31.25Khz reference frequency is used for both UHF and Sound PLLs. The prescaler is a fixed divide by 8 and is permanently engaged. The VHF divider is different for each of the 3 versions. Freescale Semiconductor, Inc... The programmable divider's division ratio is controlled by CHS pin voltage in order to get the following VHF frequencies: Device MC44BC375U CH4 = 67.25Mhz CH1 = 91.25Mhz MC44BC375J CH2 = 97.25Mhz MC44BC375T CH13 = 211.25Mhz 3 6 Channel CH3 = 61.25Mhz 8 VHF divider 12.9 Selectable Pins Pins CHS, PSS, SFS are internally pulled up to 5V. MOTOROLA MC44BC375/U/J/T Technical Data For More Information On This Product, Go to: www.freescale.com 13 Pin Circuit Schematics Freescale Semiconductor, Inc. 13 Pin Circuit Schematics VCC 100K CHS PSS SFS Psave VCC VCC 5K LOP 1.5K XTAL Freescale Semiconductor, Inc... VCC PREM 10k 11.8k 50k VCC audio AUDIO IN VCC VCC VCC 5K TV OUT SPLLFLT 75 VCC TVOVCC VCC VCC 100 VCC PLLFLT 2K 10K 500 10K VIDEO Figure 3. Pin Schematics 14 MC44BC375/U/J/T Technical Data For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. Application Schematic MC44BC375U 14 MC44BC375U Application Schematic This document contains information on a new product under development Motorola reserves the right to change or discontinue this product without notice PS1/2 Select O CH 3/4 Select O SFS Select O Loop Filter must be as close as 47nF 22nF 1 16 15 14 13 12 11 10 9 10nF LOP O 2 2.2k Vcc 1nF 10nF O TVOUT Vcc O 1nF 220nF 75* O R2** R1** Video O O Freescale Semiconductor, Inc... Cx*** 4MHz Pre-em C1 330nF 3 4 5 6 7 8 100nF Audio O 22nF 10k Psave/LO *: This 75 is to match with a 75 video signal applied thru coaxial cable. It can be removed in case of high impedance video generator. R1 and R2 are to reduce video modulation depth from typical value (for example R1=1K and R2=10K reduce VMD by about 8%) Cx is dependant on the crystal characteristics (Cx=27pF on Motorola application Board) C1 value depends on standard: 470pF is for 50s pre-emphasis time constant (B/G standard) and 750pF is for 75s (M/N standard). Figure 4. MC44BC375U Application Schematic MOTOROLA MC44BC375/U/J/T Technical Data For More Information On This Product, Go to: www.freescale.com 15 Markings and Case Diagrams Freescale Semiconductor, Inc. 15 Markings and Case Diagrams 15.1 Pin Description N 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol CHS PSS LOP XTAL Gnd PREEM AUDIO SPLFLT PSave/LO VIDEO VCCA GND TVOUT TVOVCC PLLFLT SFS Pin description Channel Select Picture to Sound Select Logic Output Port Crystal Ground Pre-emphasis Audio Input Sound PLL Filter PowerSave & Logic Output control Video Input Voltage supply Ground TV Output Voltage supply PLL Filter Sound Frequency Select UHF PLL Filter Sound frequency 4.5Mhz / 5.5Mhz selection Modulated signal Output Normal Mode / Power save mode selection In Power Save Mode, the LOP pin is automatically switched to low voltage Audio Pre-emphasis capacitor Functionality Channel 3 / Channel 4 selection for MC44BC375U Channel 1 / Channel 2 selection for MC44BC375J Don't care for the MC44BC375T PS=14dB / PS=16dB selection Logic Output Level (Low voltage / high impedance) selectable via Pin 9 Crystal Oscillator input Freescale Semiconductor, Inc... 16 MC44BC375/U/J/T Technical Data For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. and Case Diagrams Markings 15.2 Packaging Instructions Tape and reel packaging per 12MRH00360A with the following conditions applicable for Dual In-Line SOP (SOIC) package. Component Orientation: Arrange parts with the pin 1 side closest to the tape's round sprocket holes on the tape's trailing edge. Freescale Semiconductor, Inc... 15.3 Marking Instructions In accordance with 12MRH00191A internal specification applied for Dual in-line SO package. Bar marked part way accross Pin 1 end of package. Bar width 10 to 20 mils, length to be at least four times Bar width. Bar placement may extend across chamfer and dimple areas. Pin 1 Dot or Dimple * 1st line: MC44BC375U for MC44BC375UD device MC44BC375J for MC44BC375JD device MC44BC375T for MC44BC375TD device (Part number coded on 10 digits) 2nd line: Assembly site code AW (2 digits) followed by the wafer lot code L (1 digit), year Y (1 digit) and work week WW (2 digits) MC44BC375x * MOTOROLA MC44BC375/U/J/T Technical Data For More Information On This Product, Go to: www.freescale.com 17 Markings and Case Diagrams Freescale Semiconductor, Inc. Freescale Semiconductor, Inc... Millimeters Dim Min A A1 D E E1 b c e L h Q 1.35 0.1 9.8 5.8 3.8 0.35 0.19 0.4 0.25 0o Max 1.75 0.25 10 6.2 4 0.49 0.25 1.25 0.5 7o Inches Min 0.054 0.004 0.385 0.229 0.150 0.014 0.008 0.016 0.010 0o Max 0.068 0.009 0.393 0.244 0.157 0.019 0.009 0.049 0.019 7o Note: 1. Dimensions and Tolerances per ASME Y14.5M, 1994. Note: 2. Controlling dimension: Millimeters. Note: 3. Dimension D and E1 do not include mold protrusion. Note: side. 4. Maximum mold protrusion 0.15 (0.006) per 1.27 BSC 0.050 BSC Note: 5. Dimension b does not include Dambar protrusion. Allowable Dambar protrusion shall be 0.127 (0.005) total in excess of the b dimension at maximum material condition. Figure 5. SO16NB Package 18 MC44BC375/U/J/T Technical Data For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. and Case Diagrams Markings Freescale Semiconductor, Inc... MOTOROLA MC44BC375/U/J/T Technical Data For More Information On This Product, Go to: www.freescale.com 19 Freescale Semiconductor, Inc. Freescale Semiconductor, Inc... HOW TO REACH US: USA/EUROPE/LOCATIONS NOT LISTED: Motorola Literature Distribution; P.O. Box 5405, Denver, Colorado 80217 1-303-675-2140 or 1-800-441-2447 JAPAN: Motorola Japan Ltd.; SPS, Technical Information Center, 3-20-1, Minami-Azabu Minato-ku, Tokyo 106-8573 Japan 81-3-3440-3569 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Centre, 2 Dai King Street, Tai Po Industrial Estate, Tai Po, N.T., Hong Kong 852-26668334 TECHNICAL INFORMATION CENTER: 1-800-521-6274 HOME PAGE: http://www.motorola.com/semiconductors Information in this document is provided solely to enable system and software implementers to use Motorola products. There are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits or integrated circuits based on the information in this document. Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. "Typical" parameters which may be provided in Motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and the Stylized M Logo are registered in the U.S. Patent and Trademark Office. All other product or service names are the property of their respective owners. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. (c) Motorola, Inc. 2002 MC44BC375/D For More Information On This Product, Go to: www.freescale.com |
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