CXA1691M 데이터 시트보기 (PDF) - Tiger Electronic
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CXA1691M Datasheet PDF : 10 Pages
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CXA1691M
BLOCK DIAGRAM
AF
Ripple AF DET
GND OUT Vcc Filter IN OUT
28 27 26 25 24 23
AFC
AGC
22
AFC IF
AGC GND
21 20
FM
AM
FM/AM
Band
Meter NC IF IN IF IN Select
19 18 17 16 15
AF POWER AMP
AF IF DET AGC
AM FE
Tuning Meter
FM Discrinminator
FM IF
FM FE
1 2 3 4 5 6 7 8 9 10 11 12 13 14
Mute FM NF VOL AM AFC FM Reg FM AM NC FM FE FM/AM
Discri
OSC
OSC OUT RF RF IN RF IN GND FE OUT
PIN CONFIGURATIONS
Pin Symbol
1
MUTE
Description
Voltage (V)
Vcc=3V Vcc=6V
FM AM FM AM
0000
Equivalent circuit
2 FM DISCRI
Phase-Shift circuit,
Connect ceramic
discriminator
2.18 2.70 4.88 5.43
3
NF
Negative feedback pin 1.5 1.5 3.0 3.0
27 AF OUT
Power amplifier
output pin
1.5 1.5 3.0 3.0
2
1K
1.2K
Vcc
*100
27
*100
GND
3
2/10
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