High-speed, rail-to-rail output amps

26 February 2003 Analogue, Mixed Signal, LSI

Analog Devices' AD8091/2 are voltage feedback, high speed amplifiers designed to operate on +3 V, +5 V, or ±5 V supplies. They have true single-supply capability with an input voltage range extending 200 mV below the negative rail and within 1 V of the positive rail. The devices also offer low power supply current.

These features suit portable and battery-powered applications where size and power are critical. Wide bandwidth and fast slew rate make them useful in many general-purpose, high-speed applications where dual power supplies of up to ±6 V and single supplies from +3 V to +12 V are needed.

They feature high speed, 110 MHz, -3 dB (G = +1), a slew rate of 145 V/µs, and a 50 ns settling time to 0,1%. Both amplifiers also have outstanding load drive capability, 45 mA and 0,5 V from the supply rails, and a 50 pF capacitive load. The output voltage swing extends to within 25 mV of each rail, providing the maximum output dynamic range with excellent overdrive recovery.

The AD8091 and AD8092 are offered in 8-Lead SOIC, SOT23-5 package (AD8091), and µSOIC package (AD8092).

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