Amplifiers & Comparators

Overview

onsemi amplifiers and comparators deliver high‑speed, high‑accuracy signal processing for demanding analog and mixed‑signal applications. The portfolio spans operational amplifiers, current‑sense amplifiers, instrumentation amplifiers, and high‑speed comparators optimized for fast response times, low propagation delay, and minimal signal distortion.​

Categories

Operational Amplifiers (Op Amps)
onsemi wide portfolio of operational amplifiers (op amps) features high performance devices which include low power, low noise, precision, power and also general purpose op amps. These are designed to specifically meet a variety of applications like signal conditioning, automotive, battery powered, medical and current sensing.
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Current Sense Amplifiers
Current sensing requires accurate measurements and onsemi’s current sense amplifiers offer high degree of precision current sensing along with the advantages of wide input common mode range, bidirectional current sensing and high/low side current sensing.
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Comparators
onsemi offers a broad range of high speed and low power comparators in single, dual and quad configurations. Packages offered include small UDFN and SC-88 in addition to industry standard SOT-23 and SOIC. Devices include variants ready to meet consumer, industrial and automotive reliability.
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Audio Power Amplifiers
Delivering low noise and low distortion audio power amplifiers, onsemi offers class AB amplifiers and class D amplifiers. This portfolio offers special features like true-ground audio and ‘pop & click’ suppression, along with unique devices like compandors.
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Video Amplifiers
onsemi video amplifiers offer integrated filters, level shifters and also multiple gain options which can be optimized for a particular video application.
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Application Examples

High and Low-Side Current Sensing across Shunts

Explore the block diagram to see how, in a Battery Management System (BMS), current sense amplifiers measure the tiny voltage drop across a low resistance shunt resistor placed in the battery path to precisely calculate real time current flow. This measurement is critical for tracking the battery’s State of Charge (SoC) and ensuring the system stays within safe limits by detecting overcurrent or short circuit conditions.​

Instrumentation & Medical Diagnostics

Zero drift architectures in onsemi’s precision Op Amps are designed to maintain high accuracy and stability over wide temperature ranges and long operating periods. Open the block diagram to see suitable zero drift amplifiers that help to eliminate offset voltage and thermal drift in medical and lab equipment, ensuring tiny physiological or chemical signals, such as ECG or blood glucose measurements, remain accurate and stable over time.​​

Over-current Protection Using a Fast Comparator

In a Solid State Circuit Breaker, explore the block diagram to understand how a fast comparator acts as an instantaneous electronic trip, continuously comparing shunt voltage to a safe limit. This allows it to shut down power transistors in a short period of time before an overcurrent spike can destroy the hardware.​

Featured Documents

Technical Documents

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Power Supply Solutions

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Energy Storage System Solutions

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App Note

Auto Gain Control using the NSVP264SDSF3, NSVR351SDSA3 and NCV2904

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Evaluation Boards/Kits

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NCS21911SN2GEVB​

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NCS5651MNSGEVB​

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CONTROL-LOOP-GEVB​​

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