S5N8943B Datasheet, PDF (3/22 Pages) Samsung semiconductor – G.Lite ADSL Analog Front End IC

S5N8943B
G.Lite ADSL Analog Front End IC
1. OVERVIEW
This chapter provides an overview of the S5N8943B01 ADSL ATU-C & ATU-R
Analog Front End Chip.
1.1
General
Descriptions
The S5N8943B01 is Analog Front End IC designed for DMT based universal
ADSL(Asymmetric Digital Subscribe Line) modems with 0.35u fully CMOS
technology.
It has 25.875 ~ 138KHz Upstream channel and 142.312 ~ 552KHz bandwidth
Downstream channel. The S5N8943B01 includes AGC, LPF, ADC, DAC. The
AGC has 42dB gain 0.4dB step in RX mode and –24dB gain 2dB step in TX
mode with 12bit/8bit control bits. Anti alias LPF has 552KHz passband
frequency in RX path and 138KHz in TX path. Samsung’ s ADSL AFE chip
provides 14bit ADC at 2.208M, 4.416M or 8.832M sample rates and 14bit
4.416MHz, 8.832MHz DAC.
An 10bit DAC support VCXO control for timing recovery. The VCXO is divided
into a crystal driver at 35.328MHz.
1.2 Features
l Integrated Analog Front End(AFE) for ADSL ATU-C & ATU-R
l Complies with G.lite
l Up to 552Kbit/s down stream and 138Kbit/s upstream channel
l 14bit 2.208MS/s, 4.416MS/s or 8.832MS/s ADC
l 14bit 4.416MHz or 8.832MHz DAC
l 5^th-order Low Pass anti-alias Filter TX/RX paths
l RX 42dB 0.4dB step gain range with 12bit control signal
l TX -24dB 2dB step gain range with 8bit control signal
l 10bit 4KHz VCXO DAC
l Fully 0.35um CMOS technology
l 3.3V Power supply operation
l 0.4W Power comsumption
CONFIDENTIAL
Preliminary Information (Rev.1.0)
3