Datasheet

MCP3911

DS20002286B-page 58  2012-2013 Microchip Technology Inc.

7.4 GAIN – Gain and Boost

Configuration Register

Name Bits Address Cof

GAIN 8 0x09 R/W

R/W-1 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0

BOOST<1> BOOST<0> PGA_CH1<2> PGA_CH1<1> PGA_CH1<0> PGA_CH0<2> PGA_CH0<1> PGA_CH0<0>

bit 15 bit 8

Legend:

R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’

-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown

bit 7-6 BOOST<1:0>: Bias Current Selection

11 = Both channels have current x 2

10 = Both channels have current x 1(DEFAULT)

01 = Both channels have current x 0.66

00 = Both channels have current x 0.5

bit 5-3 PGA_CH1<2:0>: PGA Setting for Channel 1

111 = Reserved (Gain = 1)

110 = Reserved (Gain = 1)

101 = Gain is 32

100 = Gain is 16

011 = Gain is 8

010 = Gain is 4

001 = Gain is 2

000 = Gain is 1 (DEFAULT)

bit 2-0 PGA_CH0<2:0>: PGA Setting for Channel 0