Texas Instruments OPAx993 Low-Power Op Amps

Texas Instruments OPAx993 Low-Power Op Amps are high-voltage, rail-to-rail input and output operational amplifiers for precision industrial and power-system signal chains. The series includes the dual OPA2993 and quad OPA4993 devices, delivering 32V operation, 20MHz unity-gain bandwidth, and 40V/μs slew rate while consuming 400μA per channel.

The OPAx993 combines high AC performance with DC precision, including low offset voltage, low offset drift, low noise, and low distortion. The TI OPAx993 Low-Power Op Amps are unity-gain stable and support rail-to-rail signal swing, making them appropriate for ADC driving, reference buffering, current sensing, fault detection, and high-voltage industrial interface circuits.

The op amps are ideal for AC charging stations, GFCI fault detection and testing, software-defined radio, display panels, LCD TVs, wireless-controlled lighting, motor drives, power delivery systems, ADC drivers, reference buffers, and current sensing. The OPAx993 devices are specified from -40°C to +125°C and are available in dual and quad industry-standard package options.

Features

Rail-to-rail input and output operation
Wide supply voltage range of 2.7V to 32V
20MHz gain bandwidth and unity-gain stability
High slew rate of 40V/μs
Low quiescent current of 400μA per amplifier

Low offset voltage of ±1mV maximum
Low offset voltage drift of ±3μV/°C maximum
Low noise of 13nV/√Hz at 1kHz
Low 1/f noise of 0.5μV peak-to-peak
Low THD+N of 0.00014% or 117dB

Applications

AC charging (pile) station
GFCI fault detection and test
Software-defined radio
Display panel for PC and notebooks
Wireless control lighting

LCD TV
Motor drive: power stage and control modules
Power delivery: UPS, server, and merchant network power
ADC driver and reference buffer amplifier
High-side and low-side current sensing

Specifications

Package options
- OPA2993 D SOIC-8 package, 4.9mm x 6mm
- OPA2993 DGK VSSOP-8 package, 3mm x 4.9mm
- OPA2993 DDF SOT-23-8 package, 2.9mm x 2.8mm
- OPA4993 D SOIC-14 package, 8.65mm x 6mm
- OPA4993 DYY SOT-23-14 package, 4.2mm x 1.9mm
- OPA4993 PW TSSOP-14 package, 5mm x 6.4mm