Vdacn_Opax_Mux - Operational Amplifier Mux Configuration Register - Silicon Laboratories EFR32xG14 Wireless Gecko Reference Manual

23.5.18 VDACn_OPAx_MUX - Operational Amplifier Mux Configuration Register

Offset
0x0B0
Reset
Access
Name
Bit Name
31:27 Reserved
26:24 RESSEL
Configures the resistor ladder tap for OPAx.
Value
0
1
2
3
4
5
6
7
23:21 Reserved
20 GAIN3X
Selects gain of 3x.
Value
0
1
19 Reserved
18:16 RESINMUX
These bits selects the source for the input mux to the resistor ladder
Value
0
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Reset Access Description
To ensure compatibility with future devices, always write bits to 0. More information in
tions
0x0 RW OPAx Resistor Ladder Select
Mode Resistor Value
RES0 R2 = 1/3 x R1
RES1 R2 = R1
RES2 R2 = 1 2/3 x R1
RES3 R2 = 2 1/5 x R1
RES4 R2 = 3 x R1
RES5 R2 = 4 1/3 x R1
RES6 R2 = 7 x R1
RES7 R2 = 15 x R1
To ensure compatibility with future devices, always write bits to 0. More information in
tions
1 RW OPAx Dedicated 3x Gain Resistor Ladder
Description
Disables 3x gain ladder.
Enables and sets the gain to 3x. If this is set to 1, RESSEL will only be
used externally by other opamps. By default this is set to 1 for dac to
work properly. For stand alone opamp and to configure gain based on
RESSEL value, users need to configure this to 0.
To ensure compatibility with future devices, always write bits to 0. More information in
tions
0x6 RW OPAx Resistor Ladder Input Mux
Mode Description
DISABLE Set for Unity Gain
Bit Position
Reference Manual
VDAC - Digital to Analog Converter
1.2 Conven-
1.2 Conven-
1.2 Conven-
Rev. 1.1 | 790