Product category: Analogue and Mixed Signal ICs
News Release from: Texas Instruments (April 2001-March 2006) | Subject: OPA695
Edited by the Electronicstalk Editorial Team on 16 January 2004
Wideband current-feedback amp
claims top specs
A new low-power, current-feedback amplifier claims to offer unmatched bandwidth at low and high gains
The device is designed for applications in video signal processing, cable modems, wireless communications and test instrumentation. At higher gains (G = +8), the OPA695 offers 4300V/us slew rate and more than 450MHz bandwidth, providing a low-power solution for intermediate frequency (IF) amplifier applications.
This article was originally published on Electronicstalk on 16 January 2004 at 8.00am (UK)
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Capable of +5 to +12V single-supply operation, the OPA695 gives an improved output intercept at lower power than existing dedicated IF amplifiers.
At lower gains (G = +2), popular for video line driving, the OPA695 offers 1.4GHz bandwidth with 2500V/us slew rate, covering the highest speed video requirements.
'The OPA695 establishes a new performance level for wideband current feedback amplifiers.
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No other competitive device can match the bandwidth at a gain of +2, nor hold a high bandwidth to higher gains as well as the OPA695', said Michael Steffes, Strategic Marketing Manager for TI's High-Speed Signal Processing Group.
'Wireless communication applications will benefit from this low power, low cost, high dynamic range IF amplifier, while high-resolution RGB applications will enjoy exceptional pulse fidelity through the highest pixel update rates'.
The low 12.9mA supply current is precisely trimmed at +25C.
This trim, along with low quiescent current shift over a wide temperature range, gives low system power over temperature.
Fully specified over both the commercial (0 to +70C) and industrial (-40 to +85C) temperature ranges, the OPA695 shows minimal drop off in performance at the temperature extremes.
Using the optional disable control pin, the OPA695 supply current may be further reduced to less than 170uA.
This power-saving feature, along with exceptional single +5V operation and ultra-small SOT23-6 packaging, will be attractive to wideband amplifier requirements in portable applications.
Additional features include low input voltage noise (1.8nV/(rt)Hz), high 3rd-order intercept (better than 30dBm to 120MHz), high output swing (+/-4.2V on +/-5V supply) and instrumentation level dG/dP (0.04%/0.01 degrees) for composite video applications.
The OPA695 is packaged in either an SO-8 or SOT23-6 with industry standard pinouts.
The OPA695ID (SO-8 package) is available now from TI and its authorised distributors.
The device is priced from $1.35 in 1000-piece quantities (suggested resale pricing).
The OPA695IDBV (SOT23-6 package) will be available in February 2004.
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