LT LTC1966IMS8

155 мкА2,7 В ~ 5,5 ВПоверхностный монтаж

Overview

The LTC® 1966 is a true RMS-to-DC converter that utilizes an innovative patented ∆Σ computational technique. The internal delta-sigma circuitry of the LTC1966IMS8 makes it simpler to use, more accurate, lower power and dramatically more flexible than conventional log-antilog RMS-to-DC converters.The LTC1966IMS8 accepts single ended or differential input signals (for EMI/RFI rejection) and supports crest factors up to 4. Common mode input range is rail-to-rail. Differential input range is 1VPEAK, and offers unprecedented linearity. Unlike previously available RMS-to-DC converters, the superior linearity of the LTC1966IMS8 allows hassle-free system calibration at any input voltage.The LTC1966IMS8 also has a rail-to-rail output with a separate output reference pin providing flexible level shifting. The LTC1966IMS8 operates on a single power supply from 2.7V to 5.5V or dual supplies up to ±5.5V. A low power shutdown mode reduces supply current to 0.5µA.The LTC1966IMS8 is insensitive to PC board soldering and stresses, as well as operating temperature. The LTC1966 is packaged in the space-saving MSOP package which is ideal for portable applications.■ No-Hassle Simplicity:- True RMS-DC Conversion with Only One External- Capacitor- Delta Sigma Conversion Technology■ High Accuracy:- 0.1% Gain Accuracy from 50Hz to 1kHz- 0.25% Total Error from 50Hz to 1kHz■ High Linearity:- 0.02% Linearity Allows Simple System Calibration■ Low Supply Current:- 155µA Typ, 170µA Max■ Ultralow Shutdown Current:- 0.1µA■ Constant Bandwidth:- Independent of Input Voltage- 800kHz –3dB, 6kHz ±1%■ Flexible Supplies:- 2.7V to 5.5V Single Supply- Up to ±5.5V Dual Supply■ 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• Military and Industrial Data Acquisition Systems• Electronic Test and Scientific Instrumentation• Process Control Systems

Features

Applications

• Digital Multimeters
• Battery-Powered Instruments
• Panel Meters
• Process Control
• True RMS Digital Multimeters and Panel Meters
• True RMS AC + DC Measurements