ISD91200 Series Technical Reference Manual
Release Date: Sep 16, 2019
- 389 -
Revision 2.4
[17:16]
PGA_CMLCKADJ
Common mode Threshold lock adjust. Action takes effect when
PGA_CMLCK=0
00---0.98 (default)
01---0.96
10---1.01
11---1.04
default=00
[15]
PGA_CMLCK
Common mode Threshold lock adjust enable
0 = Enable
1 = Disable
[14]
PGA_DISCH
Charge inputs selected by PGA_ACDC[1:0] to VREF
1 = Enable
0 = Disable
[13]
PGA_GAIN
PGA Gain (default=0)
PGA_GAIN
PGA_HZMODE=0
PGA_HZMODE=1
0
0dB
6dB
1
6dB
12dB
[12]
PGA_IBLOOP
Trim PGA current
1=default
[11:9]
PGA_IBCTR
Trim PGA Current
0=default
[8:6]
PGA_MODE
Each bit has respective function as following.
PGA_MODE[0] = Disable anti-aliasing filter adjust
PGA_MODE [1] = Short the inputs (for calibrarion)
PGA_MODE[2] = Noise reduction enable.
1 = Enable
0 = Disable (default)
[5]
PGA_MUTE
Mute control signal
0—disable
1—enable
[4]
PGA_PU
Power up PGA
0—disable
1—enable
[3]
Reserved
Reserved
[2:1]
BIAS
SDADC Bias Current Selection
00 = 1
01 = 0.75
10 = 0.5
11 = 1.25
[0]
PD
SDADC Power Down
0 = SDADC power on
1 = SDADC power off