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| UTC TDA7088 LINEAR INTEGRATED CIRCUIT FM RECEIVER CIRCUIT FOR BATTERY SUPPLY DESCRIPTION The UTC TDA7088 is a bipolar integrated circuit for use in mono portable and pocket radios. It is used when a minimum of peripheral components (of small dimensions and low costs) is important. The circuit contains a frequency-lockedloop(FLL) system with an Intermediate Frequency (IF) of about 70kHz. Selectivity is achieved by active RC-filters. Detuning related to the IF and too weak input signals is suppressed by the mute circuit. SOP-16 FEATURES *Equipped with all stages of a mono receiver from antenna to audio output. *Mute circuit *Search tuning with a single varicap diode *Mechanical tuning with integrating AFC *AM application supported *Power supply polarity protection *Power supply voltage down to 1.8V APPLICATIONS *Mechanical tuning ; this is possible with or without integrating AFC circuit *Electrical tuning; this is realized by one directional (band-up) search tuning facility, including RESET to the lower-band limit. ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Storage Temperature Operating ambient temperature Electrostatic handling; note 1 SYMBOL MIN Vp Tstg Tamb Ves 0 -55 -10 VALUE MAX 5 +150 70 UNIT V C C Note 1: There is no special ESD protection circuit built-in; ESD data on request. UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R110-016,A UTC TDA7088 LINEAR INTEGRATED CIRCUIT ELECTRICAL CHARACTERISTICS (Over recommended operating free-air temperature range,VCC=15V,f=1kHz,Unless otherwise specified) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT Supply Voltage Supply Current Radio Input Frequency RF sensitivity input voltage (RMS value) Signal handling Audio Output Signal (RMS value) Operating Ambient Temperature Vp Ip fiRF Vi(rms) 1.8 4.2 0.5 VOAF=-3dB, VOAF=0dB at Vi=1mV, mute off f=+-75kHz,THD<10% RL=22k 3 5.2 3 100 60 -10 200 85 5 6.6 110 6 V mA MHz V mV mV C Vo(rms) Tamb 120 70 BLOCK DIAGRAM UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R110-016,A UTC TDA7088 PIN CONFIGURATIONS PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 SYMBOL MUTE VOAF LOOP VP OSC IFFB CLP1 VOIF ViLF CLP2 ViRF CiRF CLIM GND CAP TUNE LINEAR INTEGRATED CIRCUIT DESCRIPTION Mute output Audio frequency output signal AF loop filter +3V supply voltage Oscillator resonant circuit IF feedback Low-pass capacitor of 1 dB amplifier IF output to external coupling capacitor (highpass) IF input to limiter amplifier Low-pass capacitor of IF limiter amplifier Radio frequency input Radio frequency input Limiter offset voltage capacitor Ground(0V) All-pass filter capacitor/input for search tuning Electrical tuning/AFC output MUTE VOAF LOOP VP OSC IFFB CLP1 VOIF 1 2 3 4 16 15 14 13 TUNE CAP GND CLIM ViRF ViRF CLP2 ViIF TDA7088 5 6 7 8 12 11 10 9 Fig.2 DC CHARACTERISTICS Vp=3V,Tamb=25C, unless otherwise specified. PARAMETER Supply Voltage (pin4) Supply Current (pin4) DC voltage on pin1 DC voltage on pin3 DC voltage on pins 6 and 7 DC voltage on pin 8 DC voltage on pin 9,10 and 13 DC voltage on pins 11 and 12 DC voltage on pin 15 AF output current on pin2 Oscillator current on pin5 SYMBOL Vp Ip V1 V3 V6,7 V8 V9,10,13 V11,12 V15 I2 I5 MIN 1.8 4.2 2.5 2.64 2.38 1.6 2.42 0.91 2.06 45 275 TYP 3 5.2 2.55 2.69 2.44 1.67 2.47 0.94 2.12 60 375 MAX 5 6.6 2.6 2.74 2.5 1.74 2.52 0.98 2.18 80 500 UNIT V mA V V V V V V V A A UTC UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R110-016,A UTC TDA7088 AC CHARACTERISTICS LINEAR INTEGRATED CIRCUIT as UNIT Vp=3V,Tamb=25C, fiRF=96MHz modulated with fmod=1kHz and +-22.5kHz deviation; Vi=400V(measured EMF,Rs=75) and measurements taken in Fig.4;unless otherwise specified. PARAMETER SYMBOL CONDITIONS MIN TYP MAX RF sensitivity input voltage (RMS Vi(rms) VOAF=-3dB;VOAF=0dB at value) Vi=1mV;see Fig.3 Mute off 3 6 Mute on 3 6 12 (S+N)/N =26dB 5 10 Signal handling Vi(rms) f=+-75kHz,THD<10% 100 200 Signal plus noise-to-noise ratio (S+N)/N See Fig.3 52 56 Total harmonic distortion THD f=+-22.5kHz 1 1.4 f=+-75kHz 2.4 3.3 AM suppression AM FM:1kHz,+-75kHz, 47 52 AM:1kHz,m=0.8 Ripple rejection RR1000 100mV RMS ripple on Vp,f=1kHz 7 10 Audio output signal (RMS value) Vo(rms) RL=22k 60 85 120 Search Tuning (with BB910 and C16=0.1F) see Fig.1 Minimum output voltage on pin16 V16 Limiting point Vp 1.85 Tuning steepness V/t Voltage at pin16 95 210 420 Oscillator steepness Fosc/t 1.25 2.83 5.6 AFC steepness IAFC/V3 Voltage at pin3 4.75 9.5 19 V V V mV dB % % dB dB mV V mV/s MHz/s S UTC UNISONIC TECHNOLOGIES CO., LTD. 4 QW-R110-016,A UTC TDA7088 TEST CIRCUIT LINEAR INTEGRATED CIRCUIT UTC UNISONIC TECHNOLOGIES CO., LTD. 5 QW-R110-016,A UTC TDA7088 LINEAR INTEGRATED CIRCUIT UTC UNISONIC TECHNOLOGIES CO., LTD. 6 QW-R110-016,A UTC TDA7088 LINEAR INTEGRATED CIRCUIT UTC UNISONIC TECHNOLOGIES CO., LTD. 7 QW-R110-016,A |
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