AN7289NSC
ICs for FM/AM Tuner
■ Electrical Characteristics at Ta = 25°C (continued)
2. FM mode VCC = 8.0 V, fIN1 = 98 MHz
FM tuning condition: OSC output frequency = 108.7 MHz ±10 kHz
Parameter
Symbol
Conditions
Min
140
50
Typ Max
Unit
mV
mV
dBµ
V
FM local oscillation buffer output fmVOS fOSC = 108.7 MHz without input
200
95
260
140
67
FM-IF output level
fmIF
VIN1 = 71 dBµ
FM-AGC sensitivity
FM-AGC voltage (high)
FM-AGC voltage (low)
FM consumption current
fmAGC VIN1 level when V28 becomes 3 V
59
63
fmVaH VIN1 = 70 dBµ V28
6.0
6.4
0.05
35
6.8
0.5
44
fmVaL
fmIt
VIN1 = 82 dBµ V28
V
Without input
26
mA
■ Application Circuit Example
AM-VT
V
fOSC
aOSC
V
FE-VT
FE
OSC
AM
OSC
FM
AGC
FM
mix.
AM
RF-AGC
AM
mix.
FM/AM SW
AM.S-meter
FM
IF-amp.
AM
ATC
AM
IF-AGC
AM
det.
AM
SSC
AM
IF-amp.
KEYED-AGC In
VCC
4
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