Op Amp n Resistor Ladder Multiplexer

Name:
OPnRESMUX
Offset:
0x12 + n*0x08 [n=0..2]
Reset:
0x00
Access:
-
Bit76543210
MUXWIP[2:0]MUXBOT[2:0]MUXTOP[1:0]
AccessR/WR/WR/WR/WR/WR/WR/WR/W
Reset00000000

Bits 7:5 – MUXWIP[2:0]: Multiplexer for Wiper

Multiplexer for Wiper

This bit field selects the resistor ladder wiper (potentiometer) position.
ValueNameDescription
0x0 WIP0 R1 = 15R, R2 = 1R
0x1 WIP1 R1 = 14R, R2 = 2R
0x2 WIP2 R1 = 12R, R2 = 4R
0x3 WIP3 R1 = 8R, R2 = 8R
0x4 WIP4 R1 = 6R, R2 = 10R
0x5 WIP5 R1 = 4R, R2 = 12R
0x6 WIP6 R1 = 2R, R2 = 14R
0x7 WIP7 R1 = 1R, R2 = 15R

Bits 4:2 – MUXBOT[2:0]: Multiplexer for Bottom

Multiplexer for Bottom

This bit field selects the analog signal connected to the bottom resistor in the resistor ladder.
Note: When selecting LINKOUT for OP0, MUXBOT is connected to the output of OP2.
ValueNameDescription
0x0 OFF Multiplexer off
0x1 INP Positive input pin for OPn
0x2 INN Negative input pin for OPn
0x3 DAC DAC output (DAC and DAC output buffer must be enabled)
0x4 LINKOUT OP[n-1] output(1)
0x5 GND Ground
Other - Reserved

Bits 1:0 – MUXTOP[1:0]: Multiplexer for Top

Multiplexer for Top

This bit field selects the analog signal connected to the top resistor in the resistor ladder.
ValueNameDescription
0x0 OFF Multiplexer off
0x1 OUT OPn output
0x2 VDD VDD
Other - Reserved