STM32F303RE datasheet(149/173 Pages) STMICROELECTRONICS

部件名	STM32F303RE

功能描述	ARM Cortex-M4 32b MCUFPU, up to 512KB Flash, 80KB SRAM, FSMC, 4 ADCs, 2 DAC ch., 7 comp, 4 Op-Amp, 2.0-3.6 V

PDF	173 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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149 / 173 page

DocID026415 Rev 5

149/173

STM32F303xD STM32F303xE

Electrical characteristics

151

PGA gain

Non inverting gain value

-2

-4

-8

-16

Rnetwork

R2/R1 internal resistance values in

PGA mode (3)

Gain=2

5.4/5.4

Gain=4

16.2/5.4

Gain=8

37.8/5.4

Gain=16

40.5/2.7

PGA gain error

-1%

Ibias

OPAMP input bias current

±0.2(4)

µA

PGA BW

PGA bandwidth for different non

inverting gain

PGA Gain = 2,

Cload = 50pF,

Rload = 4 K

-4

MHz

PGA Gain = 4,

Cload = 50pF,

Rload = 4 K

-2

PGA Gain = 8,

Cload = 50pF,

Rload = 4 K

-1

PGA Gain = 16,

Cload = 50pF,

Rload = 4 K

-0.5

Voltage noise density

@ 1KHz, Output

loaded with

4 K

109

@ 10KHz,

Output loaded

with 4 K

-43

1. Guaranteed by design, not tested in production.

2. The saturation voltage can be also limited by the Iload (drive current).

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

R1 is the internal resistance between OPAMP inverting input and ground.

The PGA gain =1+R2/R1

4. Mostly TTa I/O leakage, when used in analog mode.

Table 88. Operational amplifier characteristics(1) (continued)

Symbol

Parameter

Condition

Min

Typ

Max

Unit

-----------

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