SLLSEK1B July 2014 – March 2018 ONET2804T
The gain of all TIAs can be adjusted using the GAIN pad (pad 8) in pad control mode. The gain is set to default if the pad is left open. The gain is reduced approximately 4 dB if the pad is tied to ground, and reduced approximately 8 dB if the pad is tied to VCC. In 2-wire control mode, the gain of each channel can be adjusted from minimum to default. The gain is controlled with the GAIN[0..1] bits in registers 2, 8, 14 and 20 respectively for channels 1, 2, 3 and 4.