概览

优势和特点

  • Ultra Low Voltage Noise: 0.88nV/√Hz
  • Low Distortion at High Speeds:
    • HD2/HD3 < −100dBc (Av = +1, 4VP-P, 2MHz, RL = 1kΩ)
  • High Slew Rate: 500V/μs
  • GBW = 890MHz
  • –3dB Frequency (AV = +1): 730MHz
  • Input Offset Voltage: 250μV Max Across Temperature
  • Offset Drift :0.4μV/°C
  • Input Common Mode Range Includes Negative Rail
  • Output Swings Rail-to-Rail
  • Supply Current: 16mA/Channel Typ
  • Shutdown Supply Current = 500µA
  • Operating Supply Range: 2.8V to 11.75V
  • Large Output Current: 80mA Min
  • Very High Open Loop Gain: 5.6V/μV (135dB), RL = 1kΩ
  • Operating Temp Range: –40°C to 125°C
  • Package Options: 8-Lead SOIC, TSOT-23, DC-6

产品详情

The LTC6228 is a very fast, low noise rail-to-rail output, unity gain stable op amp. It has a gain-bandwidth product of 890MHz and a slew rate of 500V/μs. The low input referred voltage noise of only 0.88nV/√Hz and low distortion peformance of better than −100dB at 4VP-P even for large signals as fast as 2MHz make it ideal for applications that require high dynamic range and deal with high slew rate signals, such as driving A/D converters. Additional features include Shutdown and the ability to enable/disable internal bias current cancellation to optimize noise performance.

The combination of low offset, low offset drift, high gain and high CMRR make the LTC6228 the superior choice for wide dynamic range applications.

The LTC6228 family maintains excellent performance for supply voltages of 2.8V to 11.75V and the devices are specified at supplies of 3V, 5V and 10V(±5V).

With an input range extending to the negative rail and an output range that encompasses the entire supply range, the operational amplifier can accommodate wide swinging signals, and single supply operation.

For space constrained PCB layouts, the LTC6228 is available in a 2mm × 2mm DFN. It is also available in conventional leaded packages.

These amplifiers can be used as improved replacements for many high speed op amps to improve speed, noise, distortion and dynamic range.

Applications

  • Optical Electronics: Fast Transimpedance Amplifiers
  • Driving Fast A/D Converters
  • Active Filters
  • Video Amplifiers
  • Fast Current Sensing Amplifiers
  • High Speed Differential to Single-Ended Conversion
  • Low Voltage Hi-Fi Amplification

产品生命周期 icon-recommended 推荐新设计使用

本产品已上市。数据手册包含所有最终性能规格和工作条件。ADI公司推荐新设计使用这些产品。

工具及仿真模型

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

LTspice

Models for the following parts are available in LTspice:

LTC6228

设计资源

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讨论

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