View MC13077_112063.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

Order this document by MC13077/D
MC13077 Advanced PAL/NTSC Encoder
The MC13077 is a high quality RGB/YUV to NTSC/PAL encoder with Composite Video and S-Video outputs. The IC integrates the color difference and luma matrix circuitry, chroma modulators, subcarrier oscillator, and logic circuitry to encode component video into a composite video signal compatible with the NTSC/PAL standards. The IC operates off a standard + 5.0 V supply and typically requires less than 75 mA, making it useful in PC environments. The high degree of integration saves board space and cost, as only passive external components are required for operation. The IC is manufactured using Motorola's MOSAICTM process and is available in a 20 pin DIP or SOIC package. * Single 5.0 V Supply
ADVANCED PAL/NTSC ENCODER
SEMICONDUCTOR TECHNICAL DATA
* * * * * * * *
Composite Output S-Video Outputs PAL/NTSC Switchable PAL Squarewave Output PAL Sequence Resettable Internal/External Burst Flag Digitally Determined Modulator Axes Subcarrier Reference Drive Selectable
DW SUFFIX PLASTIC PACKAGE CASE 751D (SO-20L)
20 1 20 1
P SUFFIX PLASTIC PACKAGE CASE 738
ORDERING INFORMATION
Device MC13077DW MC13077P Operating Temperature Range TA = 0 to +70C Package SO-20L Plastic DIP
VCC 1 4x fsc Xtal/ 4x fsc Input 14.32/ 17.73 20 p 8 4x fsc Oscillator
Simplified Block Diagram
Gnd 11 3.58/ 4.43 Latch
Divide by Four Ring Counter R 45 0 90
Divide by 512
PLL Off
LPF
Countdown Decoder
Burst Flag Adjust
18
Burst Flag Out/Force Burst Flag
3.58/4.43 MHz 9 In/ PLL Off Red In 12 1.0 Green In 13 1.0 Blue In 14 1.0 R-Y Burst Flag B-Y Burst Flag Color Difference R-Y B-Y R-Y and B-Y Clamp Clamp Luma Matrix Sync Yin
H/2
Hsync Latch
H
PAL F/F
PAL/ NTSC Switch Chroma Out Chroma In
19 PAL Squarewave Out/ Force NTSC 17 20 4.7 n 4 75 Chroma S-Video Luma S-Video Comp Video 1.0 k Chroma BPF 1.1 k
Sync Input
Luma Clamp
3 75 2 75
Yout
10
6 Luma Delay 1.2 k
15
B-Y Clamp
16
R-Y Clamp
7
Sync In/ Sync Sep
5
Luma Clamp
1.2 k
(c) Motorola, Inc. 1996
Rev 2
MOTOROLA ANALOG IC DEVICE DATA
1
MC13077
MAXIMUM RATINGS
Rating Supply Voltage Storage Temperature Operating Junction Temperature Operating Ambient Temperature Symbol VCC Tstg TJ TA Value 6.0 - 65 to +150 +150 0 to + 70 Unit V C C C
RECOMMENDED OPERATING CONDITIONS
Characteristic Supply Voltage Sync Input Threshold Equivalent (See Figure 2) Pulse Width R, G, B Input (Amplitude for 100% Saturated Video) R-Y Input Amplitude at Pin 16 (for 100% Saturated Video) B-Y Input Amplitude at Pin 15 (for 100% Saturated Video) Y Input Amplitude (without sync) at Pins 12, 13, 14 (for 100% Saturated Video) Y Input Amplitude (with sync) at Delay Line External 4x Subcarrier Input to Pin 8 (If crystal is not used) External Subcarrier Input to Pin 9 Lock Range (with 4x Subcarrier Crystal specified) at Subcarrier Frequency Burst Flag Input Threshold (Pin 18) NTSC/PAL Select (Pin 19) PAL Switching Amplitude: High PAL Switching Amplitude: Low NTSC Select Threshold Min 4.5 - - - - - - - - - - - - - - Typ 5.0 1.4 4.5 - 5.5 0.7 490 350 700 1.0 300 0.10 to 3.0 400 2.5 4.0 1.1 0.4 Max 5.5 - - - - - - - - - - - - - - Unit Vdc Vdc s Vpp mVpp
Vpp mVpp Vpp Hz Vdc Vdc
ELECTRICAL CHARACTERISTICS (TA = 25C, VCC = 5.0 Vdc, test circuit of Figure 1.)
Characteristic Supply Current (150 Load on Output Pins) Color Burst Amplitude Line-to-Line Burst Amplitude Deviation Start after leading edge of Sync: NTSC (3.579 MHz) Start after leading edge of Sync: PAL (4.43 MHz) Duration: NTSC (3.579 MHz) Duration: PAL (4.43 MHz) PAL Burst Phase: Line n PAL Burst Phase: Line n+1 NTSC Burst Phase Subcarrier Leakage in Black White (100% white) Composite Video Output (100% saturated output) Sync Amplitude Line-to-Line Sync Amplitude Deviation (PAL) Luminance Amplitude Error Line-to-Line Luminance Amplitude Deviation (PAL) Chrominance Amplitude Error Line-to-Line Chroma Amplitude Deviation (PAL) Chrominance Phase Error Line-to-Line Chrominance Phase Error (PAL) Black Level (RGB at Black during Blanking Intervals) Sync Tip Clamp Level above Ground Pin 1 Min 55 250 - - - - - 125 215 170 - - Typ 70 300 7.0 5.0 to 5.3 5.4 to 5.6 9 10 135 225 180 - - Max 85 350 25 - - - - 145 235 190 25 65 Unit mA mVpp mV s Cycles Degrees
2&4 (@ 75 load)
2&4 (@ 75 load)
mV
2 (@ 75 load)
240 - - - - - - - - 120
281 7.0 - 3.0 - < 14 - < 5.0 500 200
320 - 10 - 10 - 10 - - 280
mVpp mV % mVpp % mVpp Degrees mV
2
MOTOROLA ANALOG IC DEVICE DATA
MC13077
ELECTRICAL CHARACTERISTICS (continued) (TA = 25C, VCC = 5.0 Vdc)
Characteristic Luma S-Video Output Sync Amplitude Line-to-Line Sync Amplitude Deviation (PAL) Luminance Amplitude Error Line-to-Line Luminance Amplitude Deviation (PAL) Black Level Sync Tip Clamp Level above Ground Chroma S-Video Output Chrominance Amplitude Error Line-to-Line Chrominance Amplitude Deviation (PAL) Chrominance Phase Error Black Level Pin Min 240 - - - - 120 - - - - Typ 281 7.0 - 3.0 500 200 - < 14 - 500 Max 320 - 10 - - 280 10 - 10 - Unit mVpp mV % mVpp mV
3 (@ 75 load)
4 (@ 75 load)
% mVpp Degrees mV
Figure 1. Test Circuit
G VCC 1 1.0 F
4x Subcarrier In 8
4x fsc Oscillator
Divide by Four Ring Counter R 45 0 90
Divide by 512
3.58/4.43 Latch
PLL Off
LPF
Countdown Decoder
Burst Flag Adjust
Burst Flag Out/ 18 Force Burst Flag
9
H/2
Hsync Latch
H F/F PAL
PAL/ NTSC Switch Chroma Out Chroma In
19 PAL Squarewave Out/Force NTSC
1.0 R 1.0 G 1.0 B 14 13 12 Color Difference and Luma Matrix
R-Y Burst Flag B-Y Burst Flag R-Y B-Y Sync B-Y Clamp R-Y Clamp Sync Input Luma Clamp
17 20 4
1.0 k 1.0 nF
Chroma BPF
1.1 k
75 75 75
Chroma S-Video Luma S-Video
3 75 75 2
Yout
10 Luma Delay 1.2 k 1.2 k
6 Yin
15
(B-Y) In 10 nF
16
(R-Y) In 10 nF
7 Sync In/ Sync Sep 10 nF
5 Luma Clamp
11 Ground
Comp 75 Video
MOTOROLA ANALOG IC DEVICE DATA
3
MC13077
PIN DESCRIPTIONS
Pin 1 2 Symbol VCC Comp Video 75 Zo = 75 75 1.0 k Internal Equivalent Schematic Description Supply Voltage Composite Video output. The external 75 series resistor determines the impedance of the output. The output will drive a 75 load through a 75 coax. Expected Waveforms + 5.0 Vdc 10% 1.0 Vpp (75% Color Saturation), 1.23 Vpp (100% Color Saturation) at the 75 load.
3
Luma S-Video 75
Zo = 75 75 1.0 k
Luminance S-Video output. The external 75 series resistor determines the impedance of the output. The output will drive a 75 load through a 75 coax.
1.0 Vpp with sync (100% output) at the 75 load.
4
Chroma S-Video 75
Zo = 75 75 1.0 k
Chrominance S-Video output. The external 75 series resistor determines the impedance of the output. The output will drive a 75 load through a 75 coax. Luminance Output Clamp storage capacitor. A 0.01 F capacitor should be connected from this pin to ground.
885 mVpp (100% output) when at the 75 load.
5
Luma Clamp
3.4 Vdc.
6
YIn
Luminance input from the delay line. The delayed Luma from Pin 10 is applied at this pin. 1.4 V
500 mVpp of Composite Luma when 100% saturated RGB inputs are applied.
7
Sync In/ Sync Sep 10 k
2.0 V
Composite Sync input. Negative going sync should be applied at this pin. The input has a threshold of 1.4 V.
The peak voltage may not exceed VCC. Minimum voltage should not be less than 0 V. See Figure 2 for input requirements.
8
4x fsc Xtal /4x fsc In 400
gm
gm Vref 2.0 k
VCC Four times Subcarrier Frequency Crystal Oscillator pin. This pin provides for the connection of the oscillator resonant element. Pin may also be driven directly with a 4x subcarrier signal.
300 to 600 mVpp 4x subcarrier input if the pin is being externally driven. Approximately 40 mVpp, if a crystal is being used.
9
3.58/ 4.43 MHz In/PLL Off
10 k
External Subcarrier Input. This pin 0.10 to 3.0 Vpp (AC coupled) of provides an input to a Phase Detector and subcarrier to phase-lock 4x oscillator or PLL and allows phase-lock of the 4x grounded to disable the PLL. oscillator to an external subcarrier reference. To disable the PLL, this pin should be grounded. 400 Hz of pull-in and lock-in range is possible with a crystal.
4
MOTOROLA ANALOG IC DEVICE DATA
MC13077
PIN DESCRIPTIONS (continued)
Pin 10 Symbol YOut Internal Equivalent Schematic 10 k 10 k 1.4 V Description Luminance Delay Line Drive Output. A delay should be inserted between this pin and Pin 6 to match the delay incurred by the Chroma. Expected Waveforms 1.0 Vpp with sync (100% saturated Color Bar output).
11 12
Gnd RedIn
Ground Red Video input.
Ground 0.7 Vpp AC coupled (100% Color Bars).
20 k Vref See Pin 12 See Pin 12
13 14 15
GreenIn BlueIn B-Y Clamp
Green Video input. Blue Video input. B-Y Clamp storage capacitor. A 0.01 F capacitor should be connected from this pin to ground, unless the pin is used as an input.
0.7 Vpp AC coupled (100% Color Bars). 0.7 Vpp AC coupled (100% Color Bars). If not used as an input the pin is clamped during sync to 2.4 Vdc. Can be used as a B-Y input (AC coupled, 350 mVpp, 100% color saturation). Burst Flag, if disabled at Pin 18, must be inserted here with the following signal levels; -170 mV (NTSC), -121 mV (PAL). If not used as an input the pin is clamped during sync to 2.4 Vdc. Can be used as a R-Y input (AC coupled, 490 mVpp, 100% color saturation). Burst Flag, if disabled at Pin 18, must be inserted here with the following signal level; +121 mV for PAL. 2.8 Vpp (100% Color Bars)
16
R-Y Clamp
R-Y Clamp storage capacitor. A 0.01 F capacitor should be connected from this pin to ground, unless the pin is used as an input.
17
Chroma Out
VCC
Chroma Bandpass Drive Output.
18
Burst Flag Out/Force Burst Flag Internal Burst Flag 10 k 1/2 VCC
Burst Flag Output Disable and Force pin. If left unconnected, internally generated color burst will appear at Pins 2 and 4. Burst Flag will appear at this pin (18). If grounded, the Burst Flag will be disabled. If externally driven from another source of burst flag, the internal flags will be overriden. PAL/NTSC system switch. If grounded, the MC13077 will encode NTSC, and if left open, PAL.
1.8 Vpp burst flag pulses if unconnected.
19
PAL Square- wave Out/Force NTSC
VCC 1.4 V
In PAL mode, a PAL squarewave appears at this pin, the phase of which can be reset by momentarily forcing the pin to ground during the high state of the squarewave.
20
Chroma In
10 k 10 k 2.0 V
Chroma Bandpass input. Output from chroma bandpass filter should be applied at this pin.
1.4 Vpp (100% Color Bars) with bandpass filter and 1.0 k matching resistors.
MOTOROLA ANALOG IC DEVICE DATA
5
MC13077
FUNCTIONAL DESCRIPTION
Composite Sync Input Other than the component video inputs to be encoded, only Composite Sync is required for encoding the components into a composite signal compatible with either the NTSC or PAL standard. The Composite Sync input is used internally for determining which standard to encode to, for driving the black level clamps, and to set the timing of the composite sync in the outputs. The Composite Sync/Sync Separator input was designed to accept AC or DC coupled inputs making it possible to drive the sync input from a variety of sources. An interesting note is that composite video can also be used for sync input. The threshold of the sync input is 1.4 Vdc. Figure 2 shows the requirements for sync input. Figure 2. Sync Input Amplitude Requirements
VCC Baseline Voltage Sync Input 1.4 V Sync Tip Voltage Gnd
The clamp capacitors at Pins 5, 15 and 16 are used to store the reference voltage during the line period. RGB Inputs To encode RGB, the component video inputs (Pins 12, 13, 14) are applied to the Luma (Y) and color difference (R-Y, B-Y) matrix. The color difference signals are then conditioned by Sallen-key low pass filters (f-3dB = 4.0 MHz). The inputs are designed so that 700 mVpp RGB provides 100% color saturation. The first color difference component (R-Y) is created by matrixing the RGB components with the following weights: R-Y = 0.70R - 0.59G - 0.11B (1) The second color difference signal (B-Y) is created in a similar fashion by the equation: B-Y = 0.89B - 0.59G - 0.30R (2)
These two components then receive burst flag before being modulated by the color subcarrier to create composite chroma. The luma is also the result of a weighted matrixing of the RGB components. The components and corresponding weights are: Y = 0.30R + 0.59G + 0.11B (3)
Both serrated and block vertical sync can be used for NTSC applications. PAL applications require a serrated vertical sync. The serrations at the horizontal rate trigger the PAL flip-flop to generate the swinging burst. Even though the sync input of the MC13077 is well suited for TTL interface, some functions of the IC are susceptible to the high energy present in such signals and may be disturbed. This disturbance may take the form of a noise spike in the video outputs and/or a disturbance of the 4x oscillator resulting in an incorrect encoding of the chroma information. Therefore, it is recommended that if TTL or other fast-edged inputs are going to be used for the sync input, then either the amplitude and/or the edge speed of the sync input pulse should be reduced. 300 mVpp of sync without a reduction of edge speed has to be shown to produce disturbance free operation. Also, a sync input of 4.0 Vpp and edge rates of 225 ns have been shown to produce similar results. Figure 3 shows a recommended coupling circuit for TTL type composite sync. Figure 3. TTL Sync Input Circuit
0.1
Composite sync is then added to the result of Equation 3 to create composite luma. The luma information thus created must be eventually recombined with the chroma information. However, since the chroma information created by Equations 1 and 2 is filtered internally before being modulated then bandlimited externally, the resultant encoded chroma experiences a group delay that is the sum of the delay imposed by the internal and external filtering. So, the composite luma is output at Pin 10 so that an external delay can be inserted in the path to match the delay incurred by the composite chroma. The delayed composite luma is then input back into the MC13077 at Pin 6. Color Difference Inputs If the MC13077 is intended to encode color difference signals (YUV or Y, R-Y, B-Y), it becomes necessary to bypass the color difference and luma matrix circuitry. This can be accomplished by inputing directly to the color modulators the color difference signals. 491 mVpp and 349 mVpp should be input to the R-Y and B-Y Clamp pins (Pin 16 and Pin 15) respectively, to achieve 100% color saturation in the composite video output. The luma information can be input in two ways. The luma can be input directly into the RGB inputs (700 mVpp without sync), or through the delay line (1.0 Vpp with sync, sync tip-to-peak white) in which case the RGB inputs should be cap-coupled to ground. In either case, composite sync still needs to be input to the MC13077 at Pin 7 (see Figures 11, 12 and 13). If the R-Y and B-Y inputs also have burst flag, it can also be input along with the color difference signals at these pins. Of course, now since the color difference modulator pre-filtering is circumvented, the delay for the luma information should be matched only to the delay of the bandpass filter.
5.1 k TTL Sync 240
7
Luma and Color Difference Clamps Clamping for the MC13077 occurs once every horizontal line during sync. The absence of color creates a color difference component voltage of zero, this null is used to generate a reference voltage for black in the video outputs.
6
MOTOROLA ANALOG IC DEVICE DATA
MC13077
Figure 4. Versatility of the 4x fsc Oscillator
4x fsc Crystal 8 5-25 pF 9 MC13077 Oscillator Free Run with Crystal 4x fsc Drive (150 mV to 3.0 Vpp) 220 1000 pF 8 150 p 9 MC13077 Direct Drive of Oscillator with 4x fsc Source
4x fsc Crystal 8 5-25 pF 1000 pF fsc Subcarrier Reference Input (Pull-in Range of 400 Hz) 9 MC13077 Oscillator Phase Lock with Crystal to Subcarrier Reference
4x fsc Resonator 8 Subcarrier Reference Input 1000 pF 9 MC13077 Oscillator Phase Lock with Resonator to Subcarrier Reference
4X Subcarrier Oscillator To encode the color difference components, an accurate and reliable subcarrier source is required. The MC13077 has an on-chip single pin oscillator that will free-run with a 4x fsc crystal, phase-lock to an external subcarrier reference with a 4x fsc crystal or resonator, or be driven externally from a 4x fsc source. If the 4x fsc oscillator is going to be free run, the subcarrier input (Pin 9) should be grounded. If the 4x fsc oscillator is going to be phase-locked to an external subcarrier source, the external reference should be capacitor-coupled to Pin 9. If the 4x fsc oscillator is going to be driven externally, Pin 8 should be driven from a network that increases the impedance of the source at frequencies capable of producing off-frequency oscillations. The 4x fsc subcarrier source, thus being defined, makes it possible to produce accurate quadrature subcarriers for the modulators. The 4x source is internally divided by a ring counter to produce the quadrature subcarrier signals. These signals in turn are provided to the color difference modulators to produce the modulated chroma. The oscillator was designed so that if a crystal is chosen as the resonant element of the 4x oscillator, the crystal specifications would be common. Crystal specifications for an adequate crystal are shown in 1 Table 1. Crystal Specifications
Frequency: 14.31818 MHz (NTSC) 17.734475 MHz (PAL) Mode: Fundamental Frequency Tolerance (@25C), 40 ppm Frequency Tolerance df/dfo (0 - 70C), 40 ppm Load Capacitance: 20 pF ESR: 50 C1(Internal Series Capacitance), 15 mpF
This crystal is a common variety and is specified as a parallel resonant.
Burst Flag Decoding In order to encode to either NTSC or PAL compatibility, the MC13077 must first determine which is the intended standard. The MC13077 accomplishes this with an internal decode using the sync input and the output of the divide by 4 ring counter. Internally, the Sync separator circuitry provides an output that is sampled by the subcarrier signal from the MOTOROLA ANALOG IC DEVICE DATA
ring counter. The result is an internal sync representative of externally input sync but synchronized to the internal subcarrier signal. This signal provides a reset for an internal 9-bit counter that provides divisions of the subcarrier signal from the ring counter at powers of 2 (i.e. 21, 22, 23,...29 = 512). The eighth bit of the counter gives the output, fsc / 256. The decision to provide burst gate timing for PAL or NTSC is based upon the state of this output after one period of the horizontal sync. Figure 5 shows the relationship between the clock and the eighth bit of the counter. Triggering of the burst PAL flip-flop due to equalizing pulses is also inhibited by the decode circuitry. This is done by counting out beyond a half line interval before generating burst flag. If the MC13077 is encoding 525/60 component video to NTSC and the MC13077 is generating the burst flag, the start of burst will occur 18 counts after the leading edge of sync has been sampled, and will continue until nine cycles of burst have occurred. Since the reset pulse of the 9-bit counter has a resolution of 1.0/fsc, this implies that the start of burst will occur 5.17 0.1397 s after the leading edge of sync and also that the start (and end) of burst may differ by as much as 279.4 ns from line-to-line. If the MC13077 is encoding 625/50 to PAL, the subcarrier frequency will be 4.43361875 MHz and that implies a resolution of 225.5 ns for the burst position. For PAL encoding, 24 counts of the subcarrier are necessary before burst is initiated. So ten cycles of subcarrier will occur 5.53 0.1128 s after the leading edge of sync. After the timing of the burst gate is selected, the burst gate envelope is added to the color difference components. Another alternative to the internal determination of burst flag is the external input of burst flag. This allows the user to externally define the exact timing and duration of color burst. If external burst flag is available, it can be inserted at Pin 18. The threshold level is nominally VCC/2 and the input should not exceed VCC. Burst will begin when the leading edge of the burst flag input exceeds VCC/2 and will stop when it falls below VCC/2. If it is desired to disable the burst flag, Pin 18 can be pulled low. It is also possible to insert burst flag with the R-Y and B-Y components. This is done at the clamp pins with the respective color difference inputs with the internal burst flag generation disabled (Pin 18 grounded).
7
MC13077
Figure 5. Relationship Showing the Counts of a 3.58 MHz Clock versus a 4.43 MHz Clock at the End of a Horizontal Period
fsc
fsc/256 NTSC: (3.58 MHz) (63.56 s) = 227.5 counts 256 PAL: (4.43 MHz) (64 s) = 283.75 counts 512
Chroma Band Limiting and Luma Delay Once the color difference and burst flag envelopes have been modulated, the two components are internally summed and applied to an output buffer that will drive the external bandpass circuitry before entering the chip again at Pin 20. The sum of the color difference modulators produces an output that is high in harmonic content. For this reason, and to reduce the possibility of cross color, a chroma bandpass transformer is used to band-limit the chroma. Suggested bandpass filters and specifications for NTSC and PAL are shown in Figure 6a and 6b. For each of these filters,
approximately 300 ns of group delay is experienced by the filtered chroma. There is also an internal delay on the order of 100 ns due to internal filtering that must be considered. Thus a 400 ns luma delay line is used to equalize the timing of the luma and the chroma. Suitable 400 ns delay lines are the TOKO H321LNP-1436PBAB and the TDK DL122401D-1533. The delay of the luma channel is inserted between Pins 10 and 6. Pin 10 is the buffered output of the luma from the RGB matrix. This output is capable of driving the external passive delay line with no external gain or buffering required.
Figure 6a. Group Delay and Magnitude Response of the TOKO Bandpass Filter Intended for NTSC Applications
0 RELATIVE ATTENUATION (dB) 10 20 30 40 50 60 RELATIVE ATTENUATION (dB) Attenuation GROUP DELAY ( s) TOKO H286BAlS-6276DAD NTSC Bandpass Filter 4.7 nF 1.0 k
13 64
Figure 6b. Group Delay and Magnitude Response of the TOKO Bandpass Filter Intended for PAL Applications
0 10 20 30 40 50 60
17
Attenuation GROUP DELAY ( s) TOKO H286BAIS-4963DAD PAL Bandpass Filter 4.7 nF 1.0 k
13 64
20
17
20
1.0 k 0.4 0.2
1.0 k 0.4 0.2
Group Delay 0 1.0 2.0 3.0 4.0 5.0 6.0 FREQUENCY (MHz) 7.0 8.0
Group Delay 0 1.0 2.0 3.0 4.0 5.0 6.0 FREQUENCY (MHz) 7.0 8.0
9.0
9.0
Characteristics of TOKO Bandpass Filter (H286BAIS - 6276DAD)
Frequency (MHz) 2.0 2.8 3.58 4.3 6.2 Attenuation (dB) 8.0 (min) 3.0 3.0 Ins. Loss 3.5 (max) 3.0 3.0 15 (min) Group Delay (s) 0.12 0.25 0.290 0.030 0.24 0.05
Characteristics of TOKO Bandpass Filter (H286BAIS - 4963DAD)
Frequency (MHz) 2.50 3.73 4.43 5.13 6.50 Attenuation (dB) 10 (min) 3.0 3.0 Ins Loss 2.0 (max) 3.0 3.0 12 (min) Group Delay (s) 0.075 0.24 0.295 0.035 0.24 0.05
8
MOTOROLA ANALOG IC DEVICE DATA
MC13077
Chroma Encoding Modulation of the color difference components is performed by two double-balanced mixers that are driven from quadrature signals provided by an internal ring counter. The quadrature signals are derived from a ring counter that is driven by the 4x oscillator, and which makes highly accurate quadrature angles possible. If PAL encoding is selected, negative burst flag envelope is provided to both B-Y and R-Y components equally, then the R-Y envelope phase is switched positive and negative from line-to-line to provide the PAL alternating burst phase characteristic. An internal flip-flop that provides the internal fH/2 switching is enabled by opening the connection at Pin 19. If enabled, the pin will exhibit the internally generated half line frequency squarewave. If it is desired to reverse the sense of the PAL swinging burst, it can be done at this pin by pulling Pin 19 low when the squarewave is high. The component envelopes with the proper PAL burst phase are then modulated to produce the composite chroma. If the MC13077 is encoding to NTSC, only the B-Y color difference component is provided a negative burst flag. This envelope when modulated results in the characteristic -180 phase difference between the color burst and the subcarrier for the B-Y component. Pin 19 should be grounded for NTSC operation to disable the PAL flip-flop. Video Outputs After being filtered, the composite chroma is recombined with the composite luma information for the Composite Video output. The composite chroma and composite luma components are also kept separate and buffered for the chroma S-Video and luma S-Video outputs. The video outputs are provided with low impedance emitter-follower stages and, therefore, require an external 75 impedance determining series resistor (see Figure 7). The outputs are designed to drive a 75 load through the external 75 series resistor. The Composite Video output will provide 1.23 Vpp of video (sync tip-to-peak chroma) for 100% saturated video at the 75 load. Luma S-Video will be 1.0 Vpp (sync tip-to-peak white) at the 75 load and the Chroma S-Video output will provide 885 mVpp at the 75 load. Figure 7. Composite S-Luma and S-Chroma Video Outputs
MC13077 75 1.0 k Zo = 75 75
APPLICATIONS INFORMATION Figures 8 through 13 are application examples showing the versatility of the MC13077. Figure 8. Standard Encoder Application with RGB Inputs and Phase-Locked Subcarrier
Chroma Bandpass (R-Y) Clamp PAL/NTSC Chroma In Burst Flag 1.0 k (B-Y) Clamp Chroma Out 1.1 k 4.7 n 1.0 G-In B-In 1.0 R-In 1.0 Gnd 12 11 9 Subcarrier In Luma Out 10 1.0 n 1.2 k
10 n
10 n
20
19
18
17
16
15
14
13
MC13077
+5.0 V 1 Comp. Video 1.0 F VCC 2 S-Luma 75 3 S-Chroma 75 4 Luma Clamp 75 5 Luma In 6 Sync In 7 14.32/ 17.73 20 p 8
10 n
Luma Delay 1.2 k
MOTOROLA ANALOG IC DEVICE DATA
9
MC13077
Figure 9. Encoder with RGB Inputs and Unlocked Subcarrier
Chroma Bandpass (R-Y) Clamp PAL/NTSC Chroma In Burst Flag 1.0 k (B-Y) Clamp Chroma Out 1.1 k 4.7 n 1.0 G-In B-In 1.0 R-In 1.0 Gnd 12 11 9 Luma Out 1.0 G-In R-In 1.0 Gnd 11 10 Luma Out 1.2 k 13 12 8 4X Subcarrier In 150 p 220 1.0 n 9 10 1.2 k
10 n
10 n
20
19
18
17
16
15
14
13
MC13077
+5.0 V 1 Comp. Video 1.0 F VCC 2 S-Luma 75 3 S-Chroma 75 4 Luma Clamp 75 5 Luma In 6 Sync In 7 14.32/ 17.73 20 p 8
10 n
Luma Delay 1.2 k
Figure 10. Encoder with RGB Inputs and 4x Subcarrier Drive
Chroma Bandpass (R-Y) Clamp PAL/NTSC Chroma In Burst Flag 1.0 k (B-Y) Clamp Chroma Out 1.1 k 4.7 n 1.0 B-In 15 14 6 Luma In Sync In 1.2 k 7
10 n
10 n
20
19
18
17
16
MC13077
+5.0 V 1 Comp. Video 1.0 F VCC 2 S-Luma 75 3 S-Chroma 75 4 75 Luma Clamp 5
10 n
Luma Delay
10
MOTOROLA ANALOG IC DEVICE DATA
MC13077
Figure 11. Encoder with Luma and Color Difference Inputs Using Phase-Locked Subcarrier
R-Y, B-Y Source Impedance <500 (R-Y) Clamp 1.0 k (B-Y) Clamp Chroma Out 4.7 Gnd 13 12 11 8 Subcarrier In 14.32/ 17.73 20 p 9 Luma Out Gnd 15 14 13 12 11 6 Luma In Sync In 7 14.32/ 17.73 20 p 8 Subcarrier In 9 10 1.0 n Luma Delay 1.2 k 1.2 k Composite Y-Input 10 1.0 n 1.2 k
Chroma Bandpass 1.1 k PAL/NTSC Chroma In Burst Flag 4.7 n
20
19
18
17
16
15
14
MC13077
+5.0 V 1 Comp. Video 1.0 F VCC 2 S-Luma 75 3 S-Chroma 75 4 75 Luma Clamp 5 Luma In 6 Sync In 7
10 n
Luma Delay 1.2 k
Figure 12. Encoder with Composite Luma and Color Difference Inputs Using Phase-Locked Subcarrier
R-Y, B-Y Source Impedance <500 (R-Y) Clamp 1.0 k (B-Y) Clamp Chroma Out
Chroma Bandpass 1.1 k PAL/NTSC Chroma In Burst Flag 4.7 n
10 n
10 n
1.0 n
20
19
18
17
16
MC13077
+5.0 V 1 Comp. Video 1.0 F VCC 2 S-Luma 75 3 S-Chroma 75 4 75 Luma Clamp 5
10 n
Y-In
10 n
10 n
MOTOROLA ANALOG IC DEVICE DATA
11
MC13077
Figure 13. Encoder with Composite Luma and Color Difference Inputs Using the Sync Separator and Having Phase-Locked Subcarrier
R-Y, B-Y Source Impedance <500 (R-Y) Clamp 1.0 k (B-Y) Clamp Chroma Out
Chroma Bandpass 1.1 k PAL/NTSC Chroma In 4.7 n Burst Flag
10 n
10 n
1.0 n Gnd
20
19
18
17
16
15
14
13
12
11
MC13077
+5.0 V 1 Comp. Video 1.0 F VCC 2 S-Luma 75 3 S-Chroma 75 4 Luma Clamp 75 5 Luma In 6 Sync In 7 14.32/ 17.73 10 n 20 p 8 Subcarrier In 9 10
10 n
1.0 n
Luma Delay 1.2 k
1.2 k Composite Y-Input
Recommended Vendors
Bandpass Filters and Delay Lines TOKO America Inc. 1250 Feehanville Drive Mt. Prospect, IL 60056 (708) 297-0070 (708) 699-7864 (fax) Delay Lines TDK Corp. of America 1600 Feehanville Drive Mt. Prospect, IL 60056 (708) 803-6100 Crystals Fox Electronics 5570 Enterprise Pkwy Ft. Myers, FL 33905 (813) 693-0099 Standard Crystal Corporation 9940 E. Baldwin Place El Monte, CA 91731 (818) 443-2121
12
MOTOROLA ANALOG IC DEVICE DATA
MC13077
OUTLINE DIMENSIONS
P SUFFIX PLASTIC PACKAGE CASE 738-03 ISSUE E -A20 11 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION L TO CENTER OF LEAD WHEN FORMED PARALLEL. 4. DIMENSION B DOES NOT INCLUDE MOLD FLASH. DIM A B C D E F G J K L M N INCHES MIN MAX 1.010 1.070 0.240 0.260 0.150 0.180 0.015 0.022 0.050 BSC 0.050 0.070 0.100 BSC 0.008 0.015 0.110 0.140 0.300 BSC 15 0 0.020 0.040 MILLIMETERS MIN MAX 25.66 27.17 6.10 6.60 3.81 4.57 0.39 0.55 1.27 BSC 1.27 1.77 2.54 BSC 0.21 0.38 2.80 3.55 7.62 BSC 0 15 1.01 0.51
B
1 10
C
L
-TSEATING PLANE
K M E G F D 20 PL 0.25 (0.010)
M
N J 20 PL 0.25 (0.010) TA
M
M
TB
M
-A-
20 11
DW SUFFIX PLASTIC PACKAGE CASE 751D-04 (SO-20L) ISSUE E
-B-
1 10
10X
P 0.010 (0.25)
M
B
M
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.150 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.13 (0.005) TOTAL IN EXCESS OF D DIMENSION AT MAXIMUM MATERIAL CONDITION. DIM A B C D F G J K M P R MILLIMETERS MIN MAX 12.65 12.95 7.40 7.60 2.35 2.65 0.35 0.49 0.50 0.90 1.27 BSC 0.25 0.32 0.10 0.25 0_ 7_ 10.05 10.55 0.25 0.75 INCHES MIN MAX 0.499 0.510 0.292 0.299 0.093 0.104 0.014 0.019 0.020 0.035 0.050 BSC 0.010 0.012 0.004 0.009 0_ 7_ 0.395 0.415 0.010 0.029
20X
D
M
0.010 (0.25)
TA
S
B
J
S
F R C -T-
18X SEATING PLANE X 45 _
G
K
M
MOTOROLA ANALOG IC DEVICE DATA
13
MC13077
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 are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. Mfax is a trademark of Motorola, Inc. How to reach us: USA / EUROPE / Locations Not Listed: Motorola Literature Distribution; P.O. Box 5405, Denver, Colorado 80217. 303-675-2140 or 1-800-441-2447 JAPAN: Nippon Motorola Ltd.: SPD, Strategic Planning Office, 4-32-1, Nishi-Gotanda, Shinagawa-ku, Tokyo 141, Japan. 81-3-5487-8488
MfaxTM: RMFAX0@email.sps.mot.com - TOUCHTONE 602-244-6609 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, - US & Canada ONLY 1-800-774-1848 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852-26629298 INTERNET: http://motorola.com/sps
14
MOTOROLA ANALOG IC DEVICE DATA MC13077/D

▲Up To Search▲

Price & Availability of MC13077

	To Download MC13077 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .