OPA322AQDBVRQ1

FEATURES

• Gain Bandwidth: 20 MHz

• Low Noise: 8.5 nV/√Hz at 1 kHz

• Slew Rate: 10 V/μs • Low THD+N: 0.0005%

• Rail-to-Rail I/O

• Offset Voltage: 2 mV (max)

• Supply Voltage: 1.8 V to 5.5 V • Supply Current: 1.5 mA/ch

– Shutdown: 0.1 μA/ch

• Unity-Gain Stable

• Small Packages:

– SOT23, DFN, MSOP, TSSOP

APPLICATIONS

• Sensor Signal Conditioning

• Consumer Audio

• Multi-Pole Active Filters

• Control-Loop Amplifiers

• Communications

• Security

• Scanners

DESCRIPTION

The OPA322 series consists of single, dual, and quad-channel CMOS operational amplifiers featuring low noise and rail-to-rail inputs/outputs optimized for low-power, single-supply applications. Specified over a wide supply range of 1.8 V to 5.5 V, the low quiescent current of only 1.5 mA per channel makes these devices well-suited for power-sensitive applications.

The combination of very low noise (8.5 nV/√Hz at 1 kHz), high gain-bandwidth (20 MHz), and fast slew rate (10 V/μs) make the OPA322 family ideal for a wide range of applications, including signal conditioning and sensor amplification requiring high gains. Featuring low THD+N, the OPA322 series is also excellent for consumer audio applications, particularly for single-supply systems. The OPAx322S models include a shutdown mode allowing the amplifiers to be switched from normal operation to a standby current that is typically less than 0.1 μA.

The OPA322 (single version) is available in SOT23-5 and SOT23-6, while the OPA2322 (dual version) is offered in MSOP-8, MSOP-10, SO-8, and DFN-8 packages. The quad versions OPA4322 come in TSSOP-14 and TSSOP-16 packages. All versions are specified for operation from –40°C to +125°C

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