Date: 01/02/2011

TI brings to market new OPA opamp members for high-impedance sensor measurement

Texas Instruments' OPA family of op amps are one of the finest op amps in the market for precision instrumentation and measurement applications. TI has expanded its 1.8-V OPA 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).

The other key features of these operational amplifiers include:

Offer a maximum input bias current of 0.9 pico Amps 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/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.

Package:
OPA2320: 3-mm x 4.9-mm MSOP-8 package
OPA320: 3.9-mm x 2.8-mm SOT23-5 package
Availability: Now
Price: Each $1.25 for 1K pieces
OPA2320: Each $1.25 for 1K pieces
OPA320: Each $0.80 for 1K pieces
Editorial Product Rating: ** (Average Plus) OPA series have the legacy of precision and performance.