Operating at 850 MHz, the ADA4857 voltage-feedback amplifier consumes 5 mA and reduces input noise to 4.4 nV/√Hz. With –91-dBc distortion at 10 MHz, the amplifier provides a 10-dB improvement over voltage-feedback amps that dissipate twice the power.
For space-constrained medical imaging, ATE and other multichannel instruments, the 5 mA supply current minimizes the need for active thermal management devices and passive cooling elements, such as fans and heat sinks. The single-channel ADA4857-1 is available in 8-lead LFCSP and 8-lead SOIC packages, while the dual ADA4857-2 is available in a LFCSP. (Ea/1,000: ADA4857-1, $0.85; ADA4857-2, $1.39—prod qty, April 2008.)
Analog Devices , Wilmington , MA
Technical Support 800-262-5643
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