LTC1968

PRODUCTION

Precision Wide Bandwidth, RMS-to-DC Converter

Part Models: 4
1ku List Price: Starting From $5.19

Viewing:

Overview

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 1V_PEAKDifferential Voltage
Flexible Output:
- Rail-to-Rail Output
- Separate Output Reference Pin Allows Level Shifting
Small Size:
- Space Saving 8-Pin MSOP Package

The LTC1968 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 1V_PEAK, 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.

Applications

True RMS Digital Multimeters and Panel Meters
True RMS AC + DC Measurements

Part Models: 4
1ku List Price: Starting From $5.19

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC1968CMS8#PBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1968CMS8#TRPBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1968IMS8#PBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1968IMS8#TRPBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 11, 2022 - 22_0244 Epoxy Change from Henkel 8290 to 8290A for MSOP Package
		PCN22_0244_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC1968CMS8#PBF	PRODUCTION
LTC1968CMS8#TRPBF	PRODUCTION
LTC1968IMS8#PBF	PRODUCTION
LTC1968IMS8#TRPBF	PRODUCTION
Feb 3, 2020 - 20_0128 Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0128_Form Material_Report
LTC1968CMS8#PBF	PRODUCTION
LTC1968CMS8#TRPBF	PRODUCTION
LTC1968IMS8#PBF	PRODUCTION
LTC1968IMS8#TRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Analog to Digital Converters (ADCs) 1
LTC2460	PRODUCTION	Ultra-Tiny, 16-Bit ΔΣ ADCs with 10ppm/°C Max Precision Reference
Comparators 1
LTC1540	PRODUCTION	Nanopower Comparator with Reference
Matched Resistors & Transistors 1
LT5400	RECOMMENDED FOR NEW DESIGNS	Quad Matched Resistor Network
Temperature Sensors 1
LTC2997	PRODUCTION	Remote/Internal Temperature Sensor

Tools & Simulations

LTspice 1

LT6203 - Operational Amplifiers (Op Amps), LTC1968 - Analog Functions

Models for the following parts are available in LTspice:

LTC1968

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.