Microchip Technology MCP3901EV-MCU16 Datenbogen
© 2011 Microchip Technology Inc.
DS22192D-page 45
MCP3901
7.4
Gain Configuration Register
This register contains the settings for the PGA gains for
each channel as well as the BOOST options for each
channel.
each channel as well as the BOOST options for each
channel.
REGISTER 7-4:
GAIN CONFIGURATION REGISTER (GAIN): ADDRESS 0x08
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
PGA_CH1
<2>
PGA_CH1
<1>
PGA_CH1
<0>
BOOST_
CH1
BOOST_
CH0
PGA_CH0
<2>
PGA_CH0
<1>
PGA_CH0
<0>
bit 7
bit 0
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 7-5
PGA_CH1<2:0>: PGA Setting for Channel 1 bits
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
bit 4-3
BOOST_CH<1:0> Current Scaling for High-Speed Operation bits
11
= Both channels have current x 2
10
= Channel 1 has current x 2
01
= Channel 0 has current x 2
00
= Neither channel has current x 2
bit 2-0
PGA_CH0<2:0>: PGA Setting for Channel 0 bits
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