STV0042A
SATELLITE SOUND AND VIDEO PROCESSORS
PRODUCT PREVIEW
VIDEO
COMPOSITE VIDEO 6-bit 0 to 12.7dB GAIN
CONTROL
COMPOSITE VIDEO SELECTABLE IN-
VERTER
TWO SELECTABLE VIDEO DE-EMPHASIS
NETWORKS
4 x 2 VIDEO MATRIX
HIGH IMPEDANCE MODE VIDEO OUTPUTS
FOR TWIN TUNER APPLICATIONS
MISCELLANEOUS
22kHz TONE GENERATIONFOR LNB CONTROL
I
2
C BUS CONTROL :
CHIP ADDRESSES = 06
HEX
LOW POWER STAND-BY MODE WITH ACTIVE
AUDIO AND VIDEO MATRIXES
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SOUND
TWO INDEPENDENT SOUND DEMODULATORS
PLL DEMODULATION WITH 5-10MHz
FREQUENCY SYNTHESIS
PROGRAMMABLE FM
DEMODULATOR
BANDWIDTH ACCOMODATING FM DEVIA-
TIONS FROM
鹵30kHz
TILL
鹵400kHz
PROGRAMMABLE 50/75
碌
s OR NO DE-EM-
PHASIS
DYNAMIC NOISE REDUCTION
ONE OR TWO AUXILIARY AUDIO INPUTS
AND OUTPUTS
GAIN CONTROLLED AND MUTEABLE
AUDIO OUTPUTS
HIGH IMPEDANCE MODE AUDIO OUTPUTS
FOR TWIN TUNER APPLICATIONS
SHRINK42
(Plastic Package)
ORDER CODE :
STV0042A
PIN CONNECTIONS
FC R
PK IN
SUM OUT
VOL R
S1 VID OUT
S2 VID OUT
VOL L
S2 VID RTN
S2 OUT L
CLAMP IN
S2 OUT R
UNCL DEEM
VIDEEM2/22kHz
V 12V
VIDEEM1
V GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
A GND R
FC L
PK OUT
I
REF
CPUMP R
U75 R
DET R
AMPLK R
A 12V
V
REF
A GND L
AGC R
AMPLK L
U75 L
DET L
CPUMP L
GND 5V
V
DD
5V
XTL
0042A-01.EPS
DESCRIPTION
The STV0042A BICMOS integrated circuit realizes
all the necessary signal processing from the tuner
to the Audio/Video input and output connectors
regardless the satellite system.
The STV0042 is intended for low cost satellite
receiver application.
March 1997
B-BAND IN
S2 RTN L
S2 RTN R
FM IN
AGC L
SDA
SCL
1/24