LTC1968描述 The LTC®1968 is a true RMS-to-DC converter that uses an innovative delta-sigma computational technique. The benefits of the LTC1968 proprietary architecture, when compared to conventional log-antilog RMS-to-DC converters, are higher linearity and accuracy, bandwidth independent of amplitude and improved temperature behavior. The LTC1968 operates with single-ended or differential input signals and accurately supports crest factors up to 4. Common mode input range is rail-to-rail. Differential input range is 1VPEAK, and offers unprecedented linearity. The LTC1968 allows hassle-free system calibration at any input voltage. The LTC1968 has a rail-to-rail output with a separate output reference pin providing flexible level shifting; it operates on a single power supply from 4.5V to 5.5V. A low power shutdown mode reduces supply current to 0.1µA. The LTC1968 is packaged in the space-saving MSOP package, which is ideal for portable applications. LTC1968特点 High Linearity: 0.02% Linearity Allows Simple System Calibration Wide Input Bandwidth: Bandwidth to 1% Additional Gain Error: 500kHz Bandwidth to 0.1% Additional Gain Error: 150kHz 3dB Bandwidth Independent of Input Voltage Amplitude No-Hassle Simplicity: True RMS-DC Conversion with Only One External Capacitor Delta Sigma Conversion Technology Ultralow Shutdown Current: 0.1µA Flexible Inputs: Differential or Single Ended Rail-to-Rail Common Mode Voltage Range Up to 1VPEAK Differential Voltage Flexible Output: Rail-to-Rail Output Separate Output Reference Pin Allows Level Shifting Small Size: Space Saving 8-Pin MSOP Package Typical Application LTC1968封装 MSOP-8 LTC1968应用 True RMS Digital Multimeters and Panel Meters True RMS AC + DC Measurements |