an7280s Panasonic Corporation of North America, an7280s Datasheet
an7280s
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an7280s Summary of contents
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... ICs for FM/AM Tuner AN7280S FM Front-end IC for Car Radio Overview The AN7280S front-end IC designed for DTS except RF amp. of car radio. It features built-in local oscil- lation frequency buffer output, PIN diode driver for anten- na damping and SSC (search stop control). Features • ...
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... AN7280S Absolute Maximum Ratings (Ta=25˚C) Parameter Supply Voltage Supply Current Power Dissipation Operating Ambient Temperature Storage Temperature Recommended Operating Range (Ta=25˚C) Parameter Operating Supply Voltage Range Electrical Characteristics (Ta=25˚C) Parameter Symbol N S/N Ratio OUT Local Oscillation Level V OSC IF Output Level V OUT AGC Level (L) ...
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... Mixer+IF–Amp 0dB= 43.5dB 0 –2 –4 –6 –8 –10 –40 – 100 Ta (˚C) AN7280S Amp. Gain Adjustment with AGC 110 98MHz No Adjustment in Pin7 = HIGH 100 90 80 Pin9 = High 70 60 Pin9 = Low 10K Pin6 Adjusting Resistance ( ) ...
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... KVC–1340 22 Produced by MATSUSHITA IFT : ZIF–5EF021B 330 GND PIN RF Pass Mix Mix Con. OUT OUT IN AGC AN7280S AGC Pass OSC Gain 2 Loop Adj OUT AGC 180k 56pF + – 120k 1 F KVC–1340 ...
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... AGC signal output pin for RF-Amp. secondary gate Pin for adjusting AGC Amp. gain by external resistance Pin for adjusting AGC-Amp. gain through input of control signal from IF section Pin for adjusting AGC-Amp. gain through input of control signal from microcomputer AN7280S Equivalent Circuit V ref – ...
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... AN7280S Pin Descriptions (Cont.) Pin No. Pin Name 11 IF-Amp. 12 IF-Amp. By-pass 14 IF-Amp. Input 13 IF-Amp. Gain Adjustment 15 Mix. Output 16 17 Mix. By-pass 18 Mix. Input 19 ADX Output 20 GND Description IF-Amp. output pin IF-Amp. by-pass pin IF-Amp. input pin Pin for adjusting IF-Amp. gain by external ...
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... Operational Description • Loop AGC The AN7280S uses 2Loop AGC for AGC circuit. 2Loop AGC controls AGC output by using mixer output (IFT first side) signal and FM–IF control voltage (level meter output), which is a very favorable system for disturbance characteristics, etc. ...