CA3089E FM IF-Amplifier and Discriminator
Similar to AN377 LM3089N HA1137 TDA1200 KB4402 TCA3189
CA3089E FM Receiver IF System
General Description:
The CA3089 has been designed to provide all the major functions required for modern FM IF designs of automotive, high-fidelity and communications receivers. Features:
Three stage IF amplifier/limiter provides 12 mV (typ) b3 dB limiting sensitivity
Balanced product detector and audio amplifier provide 400 mV (typ) of recovered audio with distortion as low as 0.1% with proper external coil designs.
Four internal carrier level detectors provide delayed AGC signal to tuner, IF level meter drive current and interchannel mute control
AFC amplifier provides AFC current for tuner and/or center tuning meters
Improved operating and temperature performance, especially when using high Q quadrature coils in narrow band FM communications receivers
No mute circuit latchup problems
Pin
Name
Description
1
IF Input
2
IF In Bypass
3
IF In Bypass
4
Frame
5
Mute Control
6
Audio Output
7
AFC Output
8
IF Output
9
Quad Input
10
Ref Bias
11
Vcc
Positive Supply Voltage
12
Mute Logic
13
Tune Meter
14
GND
Ground
15
Delayed AGC
16
NC
No Connection
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