概览

优势和特点

  • Wide Bandwidth: 60 MHz at Gain of -1
  • Wide Bandwidth: 33 MHz at Gain of -10
  • Very High Output Slew Rate
  • 20 MHz Full Power Bandwidth typical, 20 V p-p, RL = 500 Ω
  • Fast Settling
  • Differential Gain Error: 0.03% at 4.4 MHz
  • Differential Phase Error: 0.158 at 4.4 MHz
  • Low Quiescent Current: 6.5 mA typical

产品详情

The AD844 is a high speed monolithic operational amplifier fabricated using Analog Devices' junction isolated complementary bipolar (CB) process. It combines high bandwidth and very fast large signal response with excellent dc performance. Although optimized for use in current to voltage applications and as an inverting mode amplifier, it is also suitable for use in many non-inverting applications.

The AD844 can be used in place of traditional op amps, but its current feedback architecture results in much better ac performance, high linearity and an exceptionally clean pulse response.

This type of op amp provides a closed-loop bandwidth which is determined primarily by the feedback resistor and is almost independent of the closed-loop gain. The AD844 is free from the slew rate limitations inherent in traditional op amps and other current-feedback op amps. Peak output rate of change can be over 2000 V/µs for a full 20 V output step. Settling time is typically 100 ns to 0.1%, and essentially independent of gain. The AD844 can drive 50 Ohm loads to ±2.5 V with low distortion and is short circuit protected to 80 mA.

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工具及仿真模型

设计工具

VRMS/dBm/dBu/dBV计算器

功率测量和信号强度的标准单位之间的换算工具。

设计资源

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