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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

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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

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