1998 Nov 18 4
Philips Semiconductors Product specification
FM/IF amplifier/demodulator circuit TDA1576T
PINNING
SYMBOL PIN DESCRIPTION
VP1 positive supply voltage
CPS 2 smoothing capacitor of power supply
IF1 3 IF signal to resonant circuit
RES1 4 resonant circuit input 1
FMON 5 FM-ON, standby switch
RES2 6 resonant circuit input 2
IF2 7 IF signal to resonant circuit
VoAF1 8 AF output voltage 1 (0° phase)
VoAF2 9 AF output voltage 2 (180° phase)
n.c. 10 not connected
n.c. 11 not connected
Vi(det) 12 detune detector input voltage for
external audio reference
Vo(det) 13 detune detector output voltage
Vref 14 reference voltage output
VF15 level output for field strength
VF0 16 zero adjust voltage for field strength
ViIF 17 FM/IF input signal voltage
VFB2 18 DC feedback 2
VFB1 19 DC feedback 1
GND 20 ground (0 V) Fig.2 Pin configuration.
handbook, halfpage
TDA1576T
MEH140
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
VP
CPS
IF1
RES1
FMON
RES2
IF2
n.c. n.c.
Vi(det)
Vo(det)
Vref
VF
VFB2
VFB1
GND
VF0
ViIF
VoAF1
VoAF2