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Operational Amplifier Version 1.0
Chapter 2 Amplifier Overview
2 Amplifier Overview
Amplifier Overview
The operational amplifier can be used to sense the ground current, and support front-end
The operational amplifier can be used to sense the ground current, and support front-end
analog signal conditioning prior to A/D conversion. It can operate in either closed loop mode or
analog signal conditioning prior to A/D conversion. It can operate in either closed loop mode or
standalone open loop mode.
standalone open loop mode.
■ Closed Loop Mode
■ Closed Loop Mode
The operational amplifier can be configured as a non-inverting closed loop operational
The operational amplifier can be configured as a non-inverting closed loop operational
amplifier.
amplifier.
It has six software-selectable closed loop gain options for ground current sensing according to
It has six software-selectable closed loop gain options for ground current sensing according to
different sense voltage values.
different sense voltage values.
■ Standalone Open Loop Mode
In this mode, the operational amplifier input pins are connected to external signals without any
output feedback.
The standalone open loop mode is designed for users that can choose more flexible gain using
external resistors.
MCU-AN-500080-E-10- Page 5
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