TDA3857 Datasheet, PDF (4/14 Pages) NXP Semiconductors – Quasi-split sound processor with two FM demodulators

Philips Semiconductors
Quasi-split sound processor with two FM demodulators
Product specification
TDA3857
PINNING
SYMBOL
FMIF1
C_AGC
MATR
FM2R1
FM2R2
AF2
AF1
FM1R1
FM1R2
VC-R1
VC-R2
TRACK
FM1I
C_AF1
ICO
C_AF2
FM2I
GND
V_P
FMIF2
PIN
DESCRIPTION
1 IF difference input 1 for B/G standard (38.9 MHz)
2 charge capacitor for AGC
3 input for stereo matrix correction
4 reference circuit for FM2 (5.74 MHz)
5 reference circuit for FM2 (5.74 MHz)
6 AF2 output (AF out of 5.74 MHz)
7 AF1 output (AF out of 5.5 MHz)
8 reference circuit for FM1 (5.5 MHz)
9 reference circuit for FM1 (5.5 MHz)
10 reference circuit for the vision carrier (38.9 MHz)
11 reference circuit for the vision carrier (38.9 MHz)
12 DC output level for tracking
13 intercarrier input for FM1 (5.5 MHz)
14 DC decoupling capacitor for FM1 demodulator
(AF1)
15 intercarrier output signal (5.5/5.74 MHz)
16 DC decoupling capacitor for FM2 demodulator
(AF2)
17 intercarrier input for FM2 (5.74 MHz)
18 ground (0 V)
19 +5 to +8 V supply voltage
20 IF difference input 2 for B/G standard (38.9 MHz)
Fig.2 Pin configuration.
June 1994
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