TDA9847 Philips Semiconductors, TDA9847 Datasheet - Page 4

• Manufacturer Part Number: TDA9847
• Description: TV and VTR stereo/dual sound processor with digital identification
• Manufacturer: Philips Semiconductors

Input and output levels are nominal values related to the SCART norm (AM: m = 0.54, FM: f = 27 kHz).
The components of the external LC band-pass filter have the following order-No.: Philips Germany only No: 4312 020 17525 or Fastron Sdn. Bha., Malaysia type SMCC 472 J
for L = 4.7 MHz ( 5%) Philips Components No: 2222 429 71802, C = 1.8 nF ( 2%).
tan
250 mV RMS
V i1
L + R
1.8 nF
250 mV RMS
(AM: 500 mV RMS)
C DCL
2.2 k
2
2%
V i2
0.01
, A
C AGC
R FP
C FP
C LP
R, B
100 nF
2.2 F
2.2 k
27 k
10 F
10 nF
4.7 mH
2.2 F
180 pF
Q o = 25
5%
10
9
7
6
4
5
15 k
35 k
50 k
Fig.2 Block diagram of the bipolar TV/VTR-stereo decoder with fixed coil (alignment-free).
3 dB
3 dB
V ref
0 dB
3 dB
V ref
6 dB (AM)
0 dB
25 k
V ref
V ref
25 k
TDA9847
10 k
10 MHz
OSCILLATOR
5 k
DIGITAL
PLL
A/mono
23
10 k
L
10 nF
5 k
5%
C D1
DEMODULATOR
DEMODULATOR
17
DIGITAL PLL
DIGITAL PLL
100 F/
16 V
1/2 V P
C D2
V ref
C ref
AND
AND
21
10 nF
8
250 mV RMS
5%
V ref
V ref
L/A/mono
SUPPLY
250 mV
RMS
V P
R/B
250 mV RMS
250 mV
22
50 k
50 k
2.2 F
AM
20
INTEGRATOR
INTEGRATOR
V i4 V i3
SCART
RMS
12
DIGITAL
DIGITAL
mute
11
POWER-ON
250 mV RMS
2.2 F
RESET
(274 Hz)
(117 Hz)
dual bit
stereo
bit
6 dB
6 dB
6 dB
6 dB
CONTROL
LOGIC
500 mV RMS
500 mV RMS
500 mV RMS
500 mV RMS
MED804
14
13
16
15
19
18
24
1
2
3
stereo transmission
dual transmission
V o1
V o2
V o3
V o4
SCART
main
C1
C2
C3
C4
1 k
V P