Texas Instruments Incorporated (TI) today expanded its 1.8-V precision operational amplifier (op amp) portfolio with a new line of op amps for low-noise, high-impedance sensor measurement. The first product in the OPAx320 family, the two-channel OPA2320, provides 20 MHz of gain bandwidth and 0.2 pA input bias current (Ib) to enable very high accuracy and dynamic range for high-impedance optical and chemical sensor front ends, programmable logic controllers, motor control loops, and test and measurement equipment. For more information and to order an OPA2320 sample, visit

Key features and benefits

The OPAx320 family features the most power-efficient, wideband, low-noise precision op amps from TI. The products:

• Offer a maximum input bias current of 0.9 pA to support high-impedance sensor signal conditioning.
• Deliver precision with zero crossover distortion, delivering a maximum offset voltage of 150 uV, high common mode rejection rate of 114 dB and rail-to-rail input/output to drive low-power, successive approximation (SAR) analog-to-digital converters (ADCs), such as TI’s ADS8319, ADS8327 and ADS7279, up to 1 MSPS.
• Combine low noise of 7nV/?Hz at 10 kHz and wide gain-bandwidth of 20 MHz at a low quiescent current of 1.45 mA per channel for use as an active filter in automated test equipment.

Tools and support

TI offers a variety of free tools and support to speed development with the OPAx320 family, including:

• A SPICE model for designing, testing, and troubleshooting a broad variety of basic and advanced circuits, including complex architectures, without any node or number of device limitations.
• Software for analysis, application and calculation utilities, including Analog Filter Designer, FilterPro, and calculators for decibel, frequency/wavelength and op amp gain stage.

Availability and pricing

The OPA2320 is available now in a 3-mm x 4.9-mm MSOP-8 package. Suggested retail pricing starts at $1.25 for 1,000-unit quantities. 4.9-mm x 6-mm SOIC-8 and 3-mm x 3-mm SON-8 package options will be available in March.

The single-channel OPA320 will be available in April in a 3.9-mm x 2.8-mm SOT23-5 package. Suggested retail pricing starts at $0.80 for 1,000-unit quantities.

Learn more about TI’s amplifier portfolio by visiting the links below:

• Order samples of the OPA2320:

• Download the OPA2320 data sheet:

• Ask questions, help solve problems in the Precision Amplifier Forum in the TI E2E Community:  

• Download the new Analog Signal Chain Guide:

For more information, go to