Product category: Analogue and Mixed Signal ICs
News Release from: Texas Instruments (April 2001-March 2006) | Subject: OPA657
Edited by the Electronicstalk Editorial Team on 13 February 2002
JFET op amp
boasts 1.6GHz gain bandwidth
Texas Instruments is claiming the industry's highest gain bandwidth (1.6GHz) JFET amplifier for optical networking, photodiode and data acquisition applications
The device combines a high-precision voltage feedback amplifier with JFET-input technology to provide an enhanced dynamic range for wideband transimpedance applications or driving ADC signals at high gains. 'The OPA657 establishes a new performance level for high-end applications by offering an unmatched combination of speed, power and precision', said Michael Steffes, product marketing manager for TI's high-speed signal processing products.
This article was originally published on Electronicstalk on 13 February 2002 at 8.00am (UK)
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'This device successfully extends TI's family of high-performance JFET amplifiers and further distances TI from the competition'.
The OPA657 features 1.6GHz gain bandwidth, 4.8nV/rtHz input voltage noise, 5pA input bias current and 700V/us high slew rate.
The device's JFET-input stage eliminates input bias current errors, while both the offset voltage and temperature drift are trimmed for exceptionally low values.
A unity-gain stable version, the OPA656, is also available and offers high bandwidth (230MHz GBW) and excellent DC precision for delivering high sensitivity and bandwidths for optical networking, photodiode-detection and ADC buffering applications.
Other features of the OPA656 include 7nV/rtHz input voltage noise and 290V/us slew rate.
The OPA657 and OPA656 operate from +/-5 to +12V supplies and offer 6uV/C input offset drift (max) and +/-70mA output current.
The OPA657 and OPA656 are available now in SOT23-5 and SO-8 packages.
The OPA657 is priced at $6.35 in 1000-piece quantities (suggested resale pricing).
The OPA656 is priced at $5.85 in 1000-piece quantities.
Both products are also available in DC screened versions to deliver the best in DC precision.
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