tda9845t NXP Semiconductors, tda9845t Datasheet - Page 15
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tda9845t
Manufacturer Part Number
tda9845t
Description
Tv And Vtr Stereo/dual Sound Processor With Digital Identification
Manufacturer
NXP Semiconductors
Datasheet
1.TDA9845T.pdf
(20 pages)
- Current page: 15 of 20
- Download datasheet (122Kb)
Philips Semiconductors
INTERNAL CIRCUITRY
1995 Mar 20
handbook, full pagewidth
TV and VTR stereo/dual sound processor
with digital identification
C
C
V
C
V
V
V
C1
C2
C
DCL
ref
i pil
LP
i 1
i 2
i 3
AGC
3
5
6
10
1
2
4
7
1/2 V
8
9
5 k
25 k
25 k
P
V
50 k
50 k
50 k
2 k
2 k
P
5 k
V
1/2 V
1/2 V
1/2 V
ESD protection diode
for pins 3 to 13, 17 and 19
P
5 k
P
P
P
V
V
V
P
P
P
V
P
40 A
5 k
I
I
22.5 k
I
B
B
3 A
3 A
B
60 A
V
P
V
P
40 A
I
B
Fig.7 Internal circuitry.
AF inputs
25 k
TDA9845
zener diode protection
for pins 1, 2, 14, 15, 18 and 20
V
P
15
AF outputs
V
P
60 A
13 k
–
+
200 A
3 pF
V
P
5 k
+
–
+
–
–
+
–
+
5 k
5 k
V
200 A
P
V
3 A
P
100
100
+5 V
2 k
MED649 - 1
20
19
18
16
15
17
14
13
12
11
Preliminary specification
GND
C
C
V
XTAL
C3
V
V
LEDST
LEDDU
D2
D1
o 2
P
o 1
TDA9845
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