The i80234 is an analog front end (AFE) for ADSL
and part of the Apollo 3 and 5 and the SAM 3 chipsets. It is an optimized
solution for ANSI T1.413, G.992.1, and G.992.2 ATU-R modems.
The i80234 is based on the i80134
specifications with an addition of a low noise receiver.
Features
Built-in low noise
programmable amplifier with a gain range from 0 to 49 dB
8.8 MHz per second
ADC, 13 bits
8.8 MHz per second
DAC, 12 bits
Built-in variable
capacitor for timing recovery
4 bit digital
interface for data transfer
1V full scale
input
Differential analog
I/O
64 pin LQFP package
0.53 watts at
3.3V
Differential
analog I/O
3rd and 4th order
tunable continuous time low pass filters for channel filtering
Selectable low
pass filter in the transmission path for both G.992.1 Annex A and B support