STM32L432KB datasheet(127/149 Pages) STMICROELECTRONICS

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STM32L432KB STM3L432KC

Electrical characteristics

142

6.3.20

Operational amplifiers characteristics

2. Refer to Table 23: Embedded internal voltage reference.

3. Guaranteed by characterization results.

Table 70. OPAMP characteristics(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VDDA

Analog supply

voltage(2)

-1.8

3.6

CMIR

Common mode

input range

-0

VDDA

VIOFFSET

Input offset

voltage

25 °C, No Load on output.

±1.5

All voltage/Temp.

±3

∆VIOFFSET

Input offset

voltage drift

Normal mode

±5

μV/°C

Low-power mode

±10

TRIMOFFSETP

TRIMLPOFFSETP

Offset trim step

at low common

input voltage

(0.1 ₓ VDDA)

0.8

1.1

TRIMOFFSETN

TRIMLPOFFSETN

Offset trim step

at high common

input voltage

(0.9 ₓ VDDA)

1.35

ILOAD

Drive current

Normal mode

VDDA ≥ 2 V

500

µA

Low-power mode

100

ILOAD_PGA

Drive current in

PGA mode

Normal mode

VDDA ≥ 2 V

450

Low-power mode

RLOAD

Resistive load

(connected to

VSSA or to

VDDA)

Normal mode

VDDA < 2 V

kΩ

Low-power mode

RLOAD_PGA

Resistive load

in PGA mode

(connected to

VSSA or to

VDDA)

Normal mode

VDDA < 2 V

4.5

Low-power mode

CLOAD

Capacitive load

CMRR

Common mode

rejection ratio

Normal mode

-85

Low-power mode

-90

PSRR

Power supply

rejection ratio

Normal mode

CLOAD ≤ 50 pf,

RLOAD ≥ 4 kΩ DC

Low-power mode

CLOAD ≤ 50 pf,

RLOAD ≥ 20 kΩ DC

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