tda9845t NXP Semiconductors, tda9845t Datasheet - Page 14

• Manufacturer Part Number: tda9845t
• Description: Tv And Vtr Stereo/dual Sound Processor With Digital Identification
• Manufacturer: NXP Semiconductors

Philips Semiconductors
1995 Mar 20
handbook, full pagewidth
handbook, full pagewidth
TV and VTR stereo/dual sound processor
with digital identification
or from AM demodulator (L)
from external sound source
AF from 5.742 MHz
AF from 5.5 MHz
V
B
100 F
10 k
V i 1
V i 2
V i 3
70 Hz
control input
47 pF
30 k
Fig.6 Test circuit for measurement of ripple rejection.
ports
Fig.5 Test circuit of the stereo decoder TDA9845.
5 V modulated
with 200 mV (p-p)
1/2 V P
2.2 k
C1
C2
2.2 k
V
C AGC
C LP
C DCL
P
3.3
nF
18
3 x 2.2 F
7
100 nF
10 F
10 nF
100 F/
16 V
mH
2.5
14
1
2
3
4
5
6
7
8
9
10
TDA9845
8
100 F
9
TDA9845
10
MED648 - 1
16
20
19
18
17
16
15
14
13
12
11
12
11
C VP
C D2
C D1
XTAL
V
5%
5%
V
o 1
o 2
MED650 - 1
10 MHz
10 F
10 nF
10 nF
V o 1
V o 2
C3 control input port
stereo transmission
dual transmission
measurements
Preliminary specification
on outputs
1 k
main
V P
50 s
de-emphasis
50 s
de-emphasis
TDA9845
V P