Fixed-gain amplifier has the bandwidth, slew rate for video signal processing

Tucson, AZ (Dec. 5, 2003) — Texas Instruments Incorporated (TI) today announced an ultra-wideband, fixed-gain video buffer amplifier from the company's Burr-Brown product line providing gains of +1, -1 or +2 using internal resistors. The combination of high bandwidth (700 MHz), high slew rate (2500 V/us), and low supply current (13 mA) makes the OPA693 an ideal video line driver or analog-to-digital converter input driver. (See

The OPA693 features an optional disable function for further system power reduction. Under normal operating conditions, the OPA693 uses only 13 mA supply current. The supply current drops to less than 170 uA when the disable control pin is pulled low.

Depending on the external connections, the internal resistor network may be used to provide either a fixed gain of +2 video buffer or a +/-1 voltage buffer with better than 1% gain accuracy. A new output stage architecture delivers high output current with a minimal headroom and crossover distortion, allowing exceptional single-supply operation. Using a single +5 V supply, the OPA693 can deliver a 2 Vpp output swing with over 90 mA drive current and 400 MHz bandwidth at a gain of +2.

The OPA693 is packaged in a SOT23-6 and an SO-8, and is available now from TI and its authorized distributors. The device is priced from $1.30 in 1,000 piece quantities (suggested resale pricing).

Texas Instruments Incorporated Semiconductor Group, SC-03251 Literature Response Center P.O. Box 954 Santa Clarita, CA 91380 Tel: 1-800-477-8924

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