Texas Instruments (TI) has expanded its 1.8-V precision operational amplifier (op amp) portfolio with a new line of products for low-noise, high-impedance sensor measurement. The first product in the OPAx320 family, the two-channel OPA2320AIDGKT.OPA2320AIDGKT., provides 20 MHz of gain bandwidth and 0.2 pA input bias current to enable 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.
The OPAx320 family offers a maximum input bias current of 0.9 pA to support high-impedance sensor conditioning. According to TI it has zero crossover distortion, delivering a maximum offset voltage of 150 uV, a 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 ADS7279IPW.ADS7279IPW., up to 1 MSPS.
The parts combine low noise of 7nV/rtHz 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.
The OPA2320OPA2320 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.