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.
248.4
OUTP_DRV
INP_DRV
INM_DRV
+
-
+
400
-
+
-
248.4
OUTM_DRV
Current Control
Block
RBIAS
100427 F2-4_BD_20441
Figure 2-4. CX20441 LD Block Diagram
2-6
Conexant
100427B
CONEXANT [ CONEXANT SYSTEMS, INC ]
