OPA843

宽带低失真中等增益的电压反馈运算放大器

The provides a level of speed and dynamic range previously unattainable in a monolithic op amp. Using a high Gain Bandwidth GBW, two gain-stage design, the OPA843 gives a medium gain range device with exceptional dynamic range. The "classic" differential input complements this high dynamic range with DC precision beyond most high-speed amplifier products. Very low input offset voltage and current, high Common-Mode Rejection Ratio CMRR and Power-Supply Rejection Ratio PSRR, and high open-loop gain combine to give a high DC precision amplifier along with low noise and high 3rd-order intercept.

12- to 16-bit converter interfaces will benefit from this combination of features. High-speed transimpedance applications can be implemented with exceptional DC precision as well. Differential configurations using two OPA843s can deliver very low distortion to high output voltages, as shown below.

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HIGH BANDWIDTH: 260MHz G = +5

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GAIN BANDWIDTH PRODUCT: 800MHz

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LOW INPUT VOLTAGE NOISE: 2.0nV/√Hz

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VERY LOW DISTOR ON: –96dBc 5MHz

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HIGH OPEN-LOOP GAIN: 110dB

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FAST 12-BIT SETTLING: 10.5ns 0.01%

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LOW INPUT OFFSET VOLTAGE: 300µV

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OUTPUT CURRENT: ±100mA

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APPLICATIONS

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ADC/DAC BUFFER AMPLIFIER

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LOW DISTORTION "IF" AMPLIFIER

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ACTIVE FILTERS

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LOW-NOISE RECEIVER

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WIDEBAND TRANSIMPEDANCE

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TEST INSTRUMENTATION

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PROFESSIONAL AUDIO

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OPA643 UPGRADE

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