U U
LTC1968
Precision Wide Bandwidth, RMS-to-DC Converter
FEATURES
■ High Linearity: 0.02% Linearity Allows Simple Sys...
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...