ST70134 - ST Microelectronics

ST70134 INTEGRATED ADSL CMOS ANALOG FRONT-END

so ro ST70134 is the Analog Front End of the STMicrob P electronics ASCOTTM ADSL chipset and when O te coupled with ST70135A or ST70235 (DMT modem) allows to get a T1.413 Issue 2 or G.dmt Obsole compliant solution. TQFP64 ORDERING NUMBER: ST70134 (TQFP64) ST70134A (TQFP64) The ST70134 analog front end handles 2 transmission channels on a balanced 2 wire int.

Features

annel and a 1.536Mbit/s to 8.192Mbit/s downstream receive channel. This asymmetrical data transmission system uses high resolution, high speed analog to digital and digital to analog conversion and high order analog filtering to reduce the echo and noise in both receivers and transmitters. External low noise driver and input stage used with ST70134 guarantee low noise performances. The filters, with a programmable cutoff frequency, use automatic Continuous Time Tuning to avoid time varying phase characteristic which can be of dramatic consequence for DMT modem. It requires few external compone.