Precision Op-Amp For Low-Noise Operations

By Jay Soni

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Diodes Incorporated has introduced precision operational amplifiers with low signal-to-noise ratio optimized for high frequency ranges.

Credit : Diodes Incorporated

Diodes Incorporated has introduced a precision operational amplifier (op-amp) with low signal-to-noise ratio characteristics. Which means it is optimized for high frequency usage, such as in on-board chargers (OBCs), DC-DC converters, battery management system (BMS) implementations, pumps, airbags, position sensors and occupancy detection systems.

A 5.5MHz bandwidth enables the AS2376Q op-amp to handle 50kHz signals without significant loss of signal accuracy. Its low input noise density (7.5nV/√Hz) and 0.8µVpp frequency noise, coupled with rail-rail output, result in enhanced signal integrity. With 5μV (typical) offset voltage, the AS2376Q supports a wide dynamic range. Supply voltages from 2.2V to 5.5V are accepted, enabling greater design-in flexibility.

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The AS2333Q op-amp has a quiescent current of just 12μA on each amplifier channel that allows it to be used in systems that have to remain live at all times. Excellent common-mode rejection ratio (CMRR) across its rail-rail input range coupled with near-zero drift over time and temperature provide long-term signal accuracy in wide common-mode rail precision applications. Its 1.8V to 5.5V supply voltage enables it to operate from 3.3V and 5V automotive rails.

Features
  • Low Noise: 9.5nV/at 1kHz
  • 1Hz to 10Hz Noise: 0.8μVPP
  • Quiescent Current: 760μA (typical)
  • Low Offset Voltage: 5μV (typ)
  • Gain Bandwidth Product: 5.5MHz
  • Rail-to-Rail Input and Output
  • Single-Supply Operation
  • Supply Voltage: 2.2V to 5.5V
  • Totally Lead-Free & Fully RoHS Compliant
  • Halogen and Antimony Free. “Green” Device

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