ST STM32G4 Series Reference Manual page 757

RM0440
Bits 18:14 PGA_GAIN: Operational amplifier Programmable amplifier gain value
00000: Non inverting internal gain =2
00001: Non inverting internal gain =4
00010: Non inverting internal gain =8
00011: Non inverting internal gain =16
00100: Non inverting internal gain =32
00101: Non inverting internal gain =64
00110: Not used
00111: Not used
01000: Inverting gain = -1 / non inverting gain =2 with VINM0 pin for input or bias
01001: Inverting gain = -3 / non inverting gain =4 with VINM0 pin for input or bias
01010: Inverting gain = -7 / non inverting gain =8 with VINM0 pin for input or bias
01011: Inverting gain = -15/ non inverting gain =16 VINM0 pin for input or bias
01100: Inverting gain = -31/ non inverting gain =32 VINM0 pin for input or bias
01101: Inverting gain = -63/ non inverting gain =64 VINM0 pin for input or bias
01110: Not used
01111: Not used
10000: Non inverting gain =2 with filtering on VINM0 pin
10001: Non inverting gain =4 with filtering on VINM0 pin
10010: Non inverting gain =8 with filtering on VINM0 pin
10011: Non inverting gain =16 with filtering on VINM0 pin
10100: Non inverting gain =32 with filtering on VINM0 pin
10101: Non inverting gain =64 with filtering on VINM0 pin
10110: Not used
10111: Not used
11000: Inverting gain = -1 / non inverting gain =2 with VINM0 pin for input or bias, VINM1 pin
for filtering
11001: Inverting gain = -3 / non inverting gain =4 with VINM0 pin for input or bias, VINM1 pin
for filtering
11010: Inverting gain = -7 / non inverting gain =8 with VINM0 pin for input or bias, VINM1 pin
for filtering
11011: Inverting gain = -15/ non inverting gain =16 with VINM0 pin for input or bias, VINM1
pin for filtering
11100: Inverting gain = -31/ non inverting gain =32 with VINM0 pin for input or bias, VINM1
pin for filtering
11101: Inverting gain = -63/ non inverting gain =64 with VINM0 pin for input or bias, VINM1
pin for filtering
11110: Not used
11111: Not used
Bits 13:12 CALSEL: Calibration selection
It is used to select the offset calibration bus used to generate the internal reference voltage
when CALON = 1 or FORCE_VP= 1.
00: 0.033*VDDA applied on OPAMP inputs
01: 0.1*VDDA applied on OPAMP inputs (for PMOS calibration)
10: 0.5*VDDA applied on OPAMP inputs
11: 0.9*VDDA applied on OPAMP inputs (for NMOS calibration)
Bit 11 CALON: Calibration mode enabled
0: Normal mode
1: Calibration mode (all switches opened by HW)
Bits 10:9 Reserved, must be kept at reset value.
RM0440 Rev 1
Operational amplifiers (OPAMP)
757/2083
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