A programmable-gain amplifier (PGA) is an electronic amplifier (typically based on an operational amplifier) whose gain can be controlled by external digital or analog signals.

One indispensable circuit is the PGA - Programmable Gain Amplifier. The amplifier's gain can be conveniently changed via a small collection of analog switches, resistors and logic bits. Toggling these logic bits swaps resistors in the op amp's feedback network effectively changing the gain.

Microchip’s industry first precision Programmable Gain Amplifiers (PGAs), the MCP6S21/2/6/8 and MCP6S91/2/3 come with Serial Peripheral Interface (SPI) and up to eight multiplexed input channels.

Wide bandwidth amplifiers with precision analog and digital gain control up to 4.5 GHz. Digitally programmable precision amplifiers with binary and scope gain ranges up to 1,000 V/V.

This article aims to help hardware designers with the design of wide bandwidth programmable gain instrumentation amplifiers (PGIAs) from the selection of off-the-shelf discrete components to performance evaluation and how to save time and reduce design iterations.

The PGA implements an opamp-based, noninverting amplifier with user-programmable gain. This amplifier has high input impedance, wide bandwidth and selectable input voltage reference. It is derived from the switched capacitor/continuous time (SC/CT) block.

There are two types of programmable gain amplifiers (PGAs) viz. resistive PGA and capacitive PGA. Resistive PGA uses resistors while capacitive PGA uses capacitors at the inputs of the Operational Amplifier ICs used in the design.

2024年1月22日 · A programmable gain amplifier (PGA) is an electronic amplifier, typically based on an operational amplifier (op amp), whose gain can be changed by external control signals.

Typically, PGAs are most useful when an input sensor signal needs to vary across different gain values to then be amplified to carry the signal into the next system component. A multiplexer allows for this switching between the different gain values thereby changing the …

In some applications, a signal with high dynamic range needs to be digitized. A common method of digitization is to add an external programmable gain amplifier (PGA) in front of the analog-to-digital converter (ADC). Only a few microcontrollers have internal PGAs.