LTC1968

U U LTC1968 Precision Wide Bandwidth, RMS-to-DC Converter FEATURES ■ 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 U APPLICATIO S ■ True RMS Digital Multimeters and Panel Meters ■ True RMS AC + DC Measurements DESCRIPTIO 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 separa...