OPA657 PDF Datasheet


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Description

This is 1.6GHz / Low-Noise / FET-Input OPERATIONAL AMPLIFIER. OPA657 OPA 657 SBOS197B DECEMBER 2001 REVISED MAY 2004 1.6GHz, Low-Noise, FET-Input OPERATIONAL AMPLIFIER FEATURES q q q q q HIGH GAIN BANDWIDTH PRODUCT: 1.6GH- HIGH BANDWIDTH 275MH- (G = +10) LOW INPUT OFFSET VOLTAGE: ±0.25mV LOW INPUT BIAS CURRENT: 2pA LOW INPUT VOLTAGE NOISE: 4.8nV, Hz DESCRIPTION The OPA657 combines a high gain bandwidth, low distor-tion, voltage-feedback op amp with a low voltage noise JFET-input stage to offer a very high dynamic range amplifier for high precision ADC (Analog-to-Digital Converter) driving or wideband transimpedance applications. Photodiode applications will see improved noise and bandwidth using this decompensated, high gain bandwidth amplifier. Very low level signals can be significantly amplified in a single OPA657 gain stage with exceptional bandwidth and accuracy. Having a high 1.6GH- gain bandwidth product will give > 10MH- signal bandwidths up to gains of 160V, V (44dB). The very low input bias current and capacitance will support t.