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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,,

Supplied By: EBV Electrolink
Tel: +27 11 236 1900
Fax: +27 11 236 1913
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Further reading:

  • How the humble op-amp plays a crucial role in medical electronics
    17 May 2017, Tempe Technologies, Analogue, Mixed Signal, LSI
    Vinaya Skanda from Microchip Technology shows the significance of the op-amp in certain applications, such as measuring vital signs on the human body.
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    Analog Devices announced a next-generation accelerometer designed for long-period monitoring of the physical condition of high-value assets. With its extremely low-power capabilities, the ADXL372 high-G ...
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