TDA9845 Philips Semiconductors, TDA9845 Datasheet - Page 5

• Manufacturer Part Number: TDA9845
• Description: TV and VTR stereo/dual sound processor with digital identification
• Manufacturer: Philips Semiconductors

Philips Semiconductors
PINNING
1995 Mar 20
C1
C2
C
C
C
V
C
V
V
V
V
V
C
LEDDU
LEDST
GND
C
V
XTAL
C3
SYMBOL
i pil
i 1
i 2
i 3
o 2
o 1
P
TV and VTR stereo/dual sound processor
with digital identification
AGC
LP
DCL
ref
D1
D2
PIN
10
12
13
14
15
16
17
18
19
20
11
1
2
3
4
5
6
7
8
9
control input Port C1
control input Port C2
AGC capacitor of pilot frequency amplifier
identification low-pass capacitor
DC loop capacitor
pilot frequency input voltage
capacitor of reference voltage (
AF input signal voltage 1 (from sound carrier 1 or
AM sound (standard L)
AF input signal voltage 2 (from sound carrier 2)
AF input signal voltage 3 (Mono sound)
AF output signal voltage 2 (Main)
AF output signal voltage 1 (Main)
50 s de-emphasis capacitor of AF Channel 1
LED (dual)
LED (stereo)
ground (0 V)
50 s de-emphasis capacitor of AF Channel 2
supply voltage (+5 to +8 V)
10 MHz crystal input
control input Port C3
DESCRIPTION
1
2
V
5
P
)
lfpage
C
C
AGC
V
DCL
C
C
V
V
V
i pil
C1
C2
LP
ref
i 1
i 2
i 3
Fig.3 Pin configuration.
10
1
2
3
4
5
6
7
8
9
Preliminary specification
TDA9845
MED646
TDA9845
20
19
18
17
16
15
14
13
12
11
C3
XTAL
V
C
GND
LEDST
LEDDU
C
V
V
o 1
o 2
P
D2
D1