Datasheet

LED
Current
Control
8-Bit Resolution
LED2 Current
Reference
LED1 Current
Reference
H-Bridge
Driver
LED2_ON
LED1_ON
LED2_ON
or
LED1_ON
Register RED Current Reference
Register IR Current Reference
Tx
I
LED
C
BULK
External
Supply
TX_CTRL_SUP
LED_DRV_SUP
AFE4490
SBAS602F –DECEMBER 2012–REVISED OCTOBER 2013 www.ti.com
Figure 72. Transmit: Push-Pull LED Drive for Common Anode LED Configuration
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