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REF194

PRODUCTION

4.5V Precision Micropower, Low Dropout, Low Voltage Reference

Data Sheet (Rev. L) Product Selection Table

Part Models: 5
1ku List Price: Starting From $2.23

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Overview

Initial Accuracy: ±2 mV Max
Temperature Coefficient: 5 ppm/°C Max
Low Supply Current: 45 µA Max
Sleep Mode: 15 µA Max
Low Dropout Voltage

Load Regulation: 4 ppm/mA
Line Regulation: 4 ppm/V
High Output Current: 30 mA
Short-Circuit Protection

The REF19x series precision band gap voltage references use a patented temperature drift curvature correction circuit and laser trimming of highly stable, thin-film resistors to achieve a very low temperature coefficient and high initial accuracy.

The REF19x series is made up of micropower, low dropout voltage (LDV) devices, providing stable output voltage from supplies as low as 100 mV above the output voltage and consuming less than 45 μA of supply current. In sleep mode, which is enabled by applying a low TTL or CMOS level to the SLEEP pin, the output is turned off and supply current is further reduced to less than 15 μA.

The REF19x series references are specified over the extended industrial temperature range (−40°C to +85°C) with typical performance specifications over −40°C to +125°C for applications, such as automotive.

All electrical grades are available in an 8-lead SOIC package; the PDIP and TSSOP packages are available only in the lowest electrical grade.

APPLICATIONS

Portable instruments
ADCs and DACs
Smart sensors
Solar powered applications
Loop-current-powered instruments

Part Models: 5
1ku List Price: Starting From $2.23

Documentation

Data Sheet 1

REF19x Series: Precision Micropower, Low Dropout Voltage References Data Sheet (Rev.L) 10/18/2006

Frequently Asked Question 1

FAQ 03/14/2015

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
REF194ESZ	8-Lead SOIC	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
REF194ESZ-REEL	8-Lead SOIC	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
REF194GSZ	8-Lead SOIC	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
REF194GSZ-REEL	8-Lead SOIC	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
REF194GSZ-REEL7	8-Lead SOIC	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jul 8, 2025 - 25_0087 Qualification of Wafer Fabrication Site at Analog Devices, Inc. Camas for CBCMOS1 Products
		PCN25_0087_Form Material_Report Delta Qualification Matrix Qualification Results Summary
REF194ESZ	PRODUCTION
REF194ESZ-REEL	PRODUCTION
REF194GSZ	PRODUCTION
REF194GSZ-REEL	PRODUCTION
REF194GSZ-REEL7	PRODUCTION
Nov 23, 2010 - 10_0004 Halogen Free Material Change for SOIC Narrow Body Products Assembled at Amkor
		PCN10_0004_Form Material_Report ADI0012 Reliability Report
REF194ESZ	PRODUCTION
REF194ESZ-REEL	PRODUCTION
REF194GSZ	PRODUCTION
REF194GSZ-REEL	PRODUCTION
REF194GSZ-REEL7	PRODUCTION
Aug 6, 2010 - 10_0187 REF19x Die Coat Change on SOIC models
		PCN10_0187_Form Material_Report Detailed Change Description Detailed Change Description Reliability Report
REF194ESZ	PRODUCTION
REF194ESZ-REEL	PRODUCTION
REF194GSZ	PRODUCTION
REF194GSZ-REEL	PRODUCTION
REF194GSZ-REEL7	PRODUCTION