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Electronics Buyers' Guide

Electronics Manufacturing & Production Handbook 2017


 

Zero-drift, zero-crossover op-amp
17 May 2017, Analogue, Mixed Signal, LSI

Texas Instruments introduced an operational amplifier (op-amp) it claims is the first to offer both zero-drift and zero-crossover technology. The OPA388 maintains high precision across the entire input range for a variety of industrial applications, including test and measurement, medical and safety equipment, and high-resolution data acquisition systems.

The unique architecture of the IC produces a combination of ultra-high input linearity and precision. TI’s zero-drift technology eliminates temperature drift and flicker noise to attain the highest DC precision and dynamic error correction, while its zero-crossover topology eliminates offset errors caused by common-mode limitations to achieve linear output and true rail-to-rail input operation.

The device’s zero-crossover topology eliminates the input offset transition region of traditional complementary metal-oxide semiconductor (CMOS) op-amps, assuring maximum linearity and minimal distortion across the entire common-mode input range. Its zero-drift technology delivers a low maximum offset voltage of 5 µV, a typical offset voltage drift of 0,005 V/°C and a maximum input bias current of 700 pA over the extended industrial temperature range of -40°C to 125°C. This eliminates the need for costly over-temperature calibration and increases DC precision.

With a 10 MHz gain bandwidth product (GBW), the OPA388 enables high gain configurations and makes it possible to acquire a wide range of signal types and frequencies to support equipment from precision weigh scales to heart-rate monitors. The ultra-low total harmonic distortion of -132 dBc and voltage noise of 7 nV/Hz help produce a high-resolution signal chain for specialised applications such as programmable logic controllers, precision field transmitters and motion control equipment.

For more information contact EBV Electrolink, +27 (0)21 402 1940, capetown@ebv.com, www.ebv.com


Credit(s)
Supplied By: EBV Electrolink
Tel: +27 11 236 1900
Fax: +27 11 236 1913
Email: saro.murabito@ebv.com
www: www.ebv.com
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