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OPA328 Datasheet CMOS Operational Amplifiers

Manufacturer: Texas Instruments

Overview: OPA328, OPA2328 SBOS957E – FEBRUARY 2022 – REVISED JANUARY 2025 OPAx328 Precision, 40MHz, 1pA, Low-Noise, RRIO, CMOS Operational Amplifiers With Shutdown.

General Description

The single-channel OPA328 and dual-channel OPA2328 (OPAx328) are a new generation family of precision, low-voltage CMOS operational amplifiers optimized for very low noise and wide bandwidth.

The OPAx328 have a linear input stage with zerocrossover distortion that delivers excellent monmode rejection ratio (CMRR) of 120dB (typical) over the full input range.

The input mon-mode voltage range extends 100mV beyond the negative and positive supply rails.

Key Features

  • Precision with zero-crossover distortion:.
  • Low offset voltage: 50µV (maximum).
  • High CMRR: 120dB.
  • Rail-to-rail I/O.
  • Wide bandwidth: 40MHz.
  • Low input bias current: 1pA (maximum).
  • Low noise: 6.1nV/√Hz at 10kHz.
  • Slew rate: 30V/µs.
  • Fast 0.01% settling time: 180ns.
  • Single-supply voltage range: 2.2V to 5.5V.
  • Unity-gain stable 2.

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