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CX20441-11

AccessRunner™ ADSL-USB Modem Device Set

Conexant Systems 

AccessRunner ADSL-USB Modem Device Set Data Sheet

2.3.4 CX20441 LD Description

The CX20441 Line Driver (LD) supports full-rate (T1.413 and G.992.1) and G.lite (G.992.2) ADSL modems. It is optimized for

ideal ADSL performance providing low noise, high bandwidth, and superior linearity. The CX20441 LD transmits a DMT

modulated signal in the 25 – 132 kHz band.

The CX20441 LD operates from a +5V supply. Internal load balancing prevents the CX20441 LD from loading the system

when in a power down state. A block diagram of the CX20441 LD is shown in Figure 2-4.

INP_DRV

INM_DRV

RBIAS

248.4

+

-+

400

--

+

248.4

Current Control

Block

Figure 2-4. CX20441 LD Block Diagram

OUTP_DRV

OUTM_DRV

100427 F2-4_BD_20441

2-6

Conexant

100427B

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