STM32U545NET6QTR datasheet(239/283 Pages) STMICROELECTRONICS

239 / 283 page

DS14216 Rev 1

239/283

STM32U545xx

Electrical characteristics

258

PGA gain(3)

Non-inverting gain value

PGA_GAIN[1:0] = 00

PGA_GAIN[1:0] = 01

PGA_GAIN[1:0] = 10

PGA_GAIN[1:0] = 11

Rnetwork

R2/R1 internal resistance

values in non-inverting

PGA mode(5)

PGA gain = 2

80/80

kΩ/

kΩ

PGA gain = 4

120/40

PGA gain = 8

140/20

PGA gain = 16

150/10

Delta R

Resistance variation

(R1 or R2)

--18

PGA gain error

-1

PGA BW

PGA bandwidth for

different non inverting gain

PGA gain = 2

GBW/2

MHz

PGA gain = 4

GBW/4

PGA gain = 8

GBW/8

PGA gain = 16

GBW/16

Voltage noise density

Normal

mode

At 1 kHz,

output loaded with

3.9 kΩ

-220

/√Hz

Low-power

mode

At 1 kHz,

output loaded with

20 kΩ

-350

Normal

mode

At 10 kHz, output

loaded with 3.9 kΩ

-190

Low-power

mode

at 10 kHz, output

loaded with 20 kΩ

-210

IDDA(OPAMP)

OPAMP consumption from

VDDA

Normal

mode

no load, quiescent

mode,

standard speed

130

190

µA

Low-power

mode

-40

Normal

mode

no load, quiescent

mode,

high-speed mode

138

205

Low-power

mode

-42

1. Specified by design and not tested in production, unless otherwise specified.

2. OPA_RANGE must be set to 1 in OPAMP1_CSR.

3. Evaluated by characterization. Not tested in production.

4. Mostly I/O leakage when used in analog mode. Refer to Ilkg parameter in Table 93: I/O static characteristics.

5. R2 is the internal resistance between the OPAMP output and the OPAMP inverting input. R1 is the internal resistance

between the OPAMP inverting input and ground. PGA gain = 1 + R2/R1.

Table 117. OPAMP characteristics(1)(2) (continued)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

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