STM32H723VG datasheet(35/227 Pages) STMICROELECTRONICS

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DS13313 Rev 2

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STM32H723xE/G

Functional overview

3.24

Ultra-low-power comparators (COMP)

STM32H723xE/G devices embed two rail-to-rail comparators (COMP1 and COMP2). They

feature programmable reference voltage (internal or external), hysteresis and speed (low

speed for low-power) as well as selectable output polarity.

The reference voltage can be one of the following:

•

An external I/O

•

A DAC output channel

•

An internal reference voltage or submultiple (1/4, 1/2, 3/4).

All comparators can wake up from Stop mode, generate interrupts and breaks for the timers,

and be combined into a window comparator.

3.25

Operational amplifiers (OPAMP)

STM32H723xE/G devices embed two rail-to-rail operational amplifiers (OPAMP1 and

OPAMP2) with external or internal follower routing and PGA capability.

The operational amplifier main features are:

•

PGA with a non-inverting gain ranging of 2, 4, 8 or 16 or inverting gain ranging of -1, -3,

-7 or -15

•

One positive input connected to DAC

•

Output connected to internal ADC

•

Low input bias current down to 1 nA

•

Low input offset voltage down to 1.5 mV

•

Gain bandwidth up to 7.3 MHz

The devices embeds two operational amplifiers (OPAMP1 and OPAMP2) with two inputs

and one output each. These three I/Os can be connected to the external pins, thus enabling

any type of external interconnections. The operational amplifiers can be configured

internally as a follower, as an amplifier with a non-inverting gain ranging from 2 to 16 or with

inverting gain ranging from -1 to -15.

STM32H723VG Datasheet(PDF) 35 Page - STMicroelectronics