Datasheet

33.8.8 Input Control
Name: INPUTCTRL
Offset: 0x10
Reset: 0x00000000
Property: Write-Protected, Write-Synchronized
Bit 31 30 29 28 27 26 25 24
GAIN[3:0]
Access
R/W R/W R/W R/W
Reset 0 0 0 0
Bit 23 22 21 20 19 18 17 16
INPUTOFFSET[3:0] INPUTSCAN[3:0]
Access
R/W R/W R/W R/W R/W R/W R/W R/W
Reset 0 0 0 0 0 0 0 0
Bit 15 14 13 12 11 10 9 8
MUXNEG[4:0]
Access
R/W R/W R/W R/W R/W
Reset 0 0 0 0 0
Bit 7 6 5 4 3 2 1 0
MUXPOS[4:0]
Access
R/W R/W R/W R/W R/W
Reset 0 0 0 0 0
Bits 27:24 – GAIN[3:0] Gain Factor Selection
These bits set the gain factor of the ADC gain stage.
GAIN[3:0] Name Description
0x0 1X 1x
0x1 2X 2x
0x2 4X 4x
0x3 8X 8x
0x4 16X 16x
0x5-0xE Reserved
0xF DIV2 1/2x
Bits 23:20 – INPUTOFFSET[3:0] Positive Mux Setting Offset
The pin scan is enabled when INPUTSCAN != 0. Writing these bits to a value other than zero causes the
first conversion triggered to be converted using a positive input equal to MUXPOS + INPUTOFFSET.
Setting this register to zero causes the first conversion to use a positive input equal to MUXPOS.
SAM D21 Family
ADC – Analog-to-Digital Converter
© 2018 Microchip Technology Inc.
Datasheet Complete
DS40001882D-page 914