an7243s Panasonic Corporation of North America, an7243s Datasheet
an7243s
Related parts for an7243s
an7243s Summary of contents
Page 1
... ICs for FM/AM Tuner AN7243S FM Front-end Circuit for Car Radio Overview The AN7243S front-end IC designed for DTS except RF amp. of car radio built-in local oscillation frequency buffer output and PIN diode (ADX) driver for antenna damping. Features • High sensitivity · High S/N ratio • ...
Page 2
... AGC AGC maximum sensitivity 72dB X(max 63dB X(leak – Amp. Input/Output Characteristics 120 100 80 0. AN7243S OUT 60 0.01 F 330 100 120 IF IN (MHz) ICs for FM/AM Tuner Unit ˚C ˚C Range : Open, Ta= 25˚C) 1 min ...
Page 3
... V (V) CC AGC ON Level Temperature Characteristics 100 90 AGC ON LEVEL R Adj = 80 70 AGC ON LEVEL R Adj = –60 –40 – 100 T (˚C) AN7243S I – V ADX ADX (mA) ADX IF Amp. Saturation Level ...
Page 4
... AN7243S OSC Buff OUT V Dependence CC 120 OSC Buff OUT 110 100 (V) CC Limiting Sensitivity, Usable Sensitivity, Temperature Characteristics IF : AN7257S Usable Sensitivity 10 Limiting Sensitivity 0 –60 –40 – 100 T (˚C) IM Characteristics (2) 130 98MHz 98MHz ...
Page 5
... ICs for FM/AM Tuner Application Circuit 22 470pF 470pF 470pF 100k 47k 1000pF AN7243S ...
Page 6
... AN7243S Pin Descriptions Pin No. Pin Name Typ. Waveform 1 Oscillation Emitter 108.7MHz 2 Oscillation Base 108.7MHz OSC Output 108.7MHz 6.6V 5 AGC Output AGC-Amp. Gain 6 Adjustment IF Amp. Output 7 10.7MHz IF Amp. By-pass 8 IF Amp. Input 9 10.7MHz 10 10.7MHz Mix. Output 11 10.7MHz Note) Typical waveform frequency is the value when tuning receiving frequency to 98.0MHz. ...
Page 7
... Mix.Output RF 14 GND Note) Typical waveform frequency is the value when tuning receiving frequency 98.0 MHz. Supplementary Explanation • AGC AGC used at the AN7243S uses mixer output (IFT primary side) signal and controls AGC output. RF Amp. – Description 7.2V Drive PIN diode for input attenuate of RF-Amp ...