DESCRIPTION

The STV0042ABICMOS 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.

SOUND

. TWOINDEPENDENTSOUNDDEMODULATORS

. PLL DEMODULATION WITH 5-10MHz FREQUENCY SYNTHESIS

. PROGRAMMABLE FM DEMODULATOR BANDWIDTH ACCOMODATING FM DEVIA TIONS FROM ±30kHz TILL ±400kHz

. PROGRAMMABLE 50/75µs 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

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

. 22kHzTONEGENERATIONFORLNBCONTROL

. I2C BUS CONTROL : CHIP ADDRESSES = 06HEX

. LOW POWER STAND-BY MODE WITH ACTIVE AUDIO AND VIDEOMATRIXES