Philips TDA3827 Datasheet
INTEGRATED CIRCUITS
DATA SH EET
TDA3827
TV-sound demodulator circuit with
SCART switches and AF control
Preliminary specification
File under Integrated Circuits, IC02
March 1991
Philips Semiconductors Preliminary specification
TV-sound demodulator circuit with
SCART switches and AF control
FEATURES
• Wide supply voltage range from
4.5 V to 13.2 V
• Wide frequency range from 4 to
12 MHz
• High ripple rejection
• High precision and temperature
compensated FM-demodulator
output
• Multiple-input AF operational
amplifiers with offset compensation
• SCART AF input / AF output (low
impedance)
• External AF input
• High-level AF output voltage with
low distortion
• External selection of the source
selector AF gain
• Low switching noise between AF
and mute
• Wide volume-control range
QUICK REFERENCE DATA
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
V
P
I
P
(S+N)/N signal to weighted
V
5(rms)
V
13(rms)
G
v
V
17(rms)
THD total harmonic
supply voltage
range (pin 18)
supply current
(pin 18)
noise
FM demodulator
output voltage
(RMS value)
SCART output
signal
(RMS value)
volume control
range
AF output signal
(RMS value)
distortion (pin 17)
TDA3827
4.5 5.0 13.2 V
VP = 5 V − 26 − mA
V
= 12 V − 28 − mA
P
73 78 − dB
∆f = 50 kHz;
f
= 1 kHz;
mod
QL = 20
∆f = 50 kHz;
f
= 1 kHz;
mod
QL = 20
450 500 550 mV
− 1.0 − V
80 85 − dB
− 1.0 − V
− 0.5 − %
GENERAL DESCRIPTION
The TDA3827 contains a single FM
demodulator with SCART switches, a
mute function and volume control.
ORDERING AND PACKAGE INFORMATION
EXTENDED TYPE
NUMBER
PINS PIN POSITION MATERIAL CODE
PACKAGE
TDA3827 18 DIL plastic SOT102
Note
1. SOT102-2; 1996 December 13.
(1)
March 1991 2
Philips Semiconductors Preliminary specification
TV-sound demodulator circuit with SCART
switches and AF control
TDA3827
Fig.1 Block diagram.
March 1991 3
Philips Semiconductors Preliminary specification
TV-sound demodulator circuit with SCART
switches and AF control
PIN CONFIGURATION
Fig.2 Pin configuration.
PINNING
SYMBOL PIN DESCRIPTION
GND 1 ground
V
FB1
V
IF
V
FB2
V
O AF1
V
INT AF
V
EXT AF
V
SEL1
V
90°
V
90°
V
SEL2
V
F
V
O AF2
V
REF
V
SC AF
V
DC
V
O AF3
V
P
TDA3827
2 limiter amplifier feedback
3 FM IF input signal
4 limiter amplifier feedback
5 AF output signal
6 internal AF input signal
7 external AF input signal
8 selection voltage for internal /
external AF input and mute
9
10
11 selection voltage for internal /
12 source selector feedback
13 output signal to SCART
14 reference voltage
15 input signal from SCART
16 DC volume control voltage
17 AF output signal from volume control
18 supply voltage
quadrature demodulator tuned
circuit reference
external or SCART audio
Fig.3 Internal circuits.
March 1991 4
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