Two engineers working in the lab

Save time and deliver your solutions faster with ADI’s new suite of precision technology signal chains. Align your applications ranging from Smart Industry to Instrumentation, Electrification to Digital Health, to exactly the right precision technology combinations.

Tailor your signal chain with confidence

LT1021

PRODUCTION

Precision Reference

Data Sheet Product Selection Table
Viewing:

Overview

  • Ultralow Drift: 5ppm/°C Max Slope
  • Very Low Noise: P-P (0.1Hz to 10Hz)
  • 100% Noise Tested
  • Pin Compatible with Most Bandgap Reference Applications, Including REF01, REF02, LM368, MC1400 and MC1404 with Greatly Improved Stability, Noise and Drift
  • Trimmed Output Voltage
  • Operates in Series or Shunt Mode
  • Output Sinks and Sources in Series Mode
  • >100dB Ripple Rejection
  • Minimum Input/Output Differential of 1V
  • Available in 5-Lead Can, N8 and S8 Packages

The LT1021 is a precision reference with ultralow drift and noise, extremely good long term stability and almost total immunity to input voltage variations. The reference output will both source and sink up to 10mA. Three voltages are available: 5V, 7V and 10V. The 7V and 10V units can be used as shunt regulators (two-terminal zeners) with the same precision characteristics as the three terminal connection. Special care has been taken to minimize thermal regulation effects and temperature induced hysteresis.

The LT1021 references are based on a buried zener diode structure that eliminates noise and stability problems associated with surface breakdown devices. Further, a subsurface zener exhibits better temperature drift and time stability than even the best bandgap references.

Unique circuit design makes the LT1021 the first IC reference to offer ultralow drift without the use of high power on-chip heaters.

The LT1021-7 uses no resistive divider to set output voltage, and therefore exhibits the best long term stability and temperature hysteresis. The LT1021-5 and LT1021- 10 are intended for systems requiring a precise 5V or 10V reference with an initial tolerance as low as ±0.05%.

Applications

  • A/D and D/A Converters
  • Precision Regulators
  • Digital Voltmeters
  • Inertial Navigation Systems
  • Precision Scales
  • Portable Reference Standard
LT1021
Precision Reference
Basic Positive and Negative Connections Typical Distribution of Temperature Drift Product Package 1 Product Package 2
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project
Ask a Question

Documentation

Data Sheet 1

Reliability Data 1

Application Note 12

Design Note 4

Technical Articles 1

Data Sheet

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

Learn More
Add to myAnalog

Add media to the Resources section of myAnalog, to an existing project or to a new project.

Create New Project

Hardware Ecosystem

Parts Product Life Cycle Description
Matched Resistors & Transistors 1
LT5400
RECOMMENDED FOR NEW DESIGNS Quad Matched Resistor Network
Modal heading
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

  • LT1021-10
  • LT1021-5
  • LT1021-7
LTspice

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.

Latest Discussions

2 Years Ago
Noise Measurement on a LT1021 Voltage reference powerbuffer amplifier
4 Years Ago
Low noise power supply with LT1021
4 Years Ago
Designing with LT1021
View related discussion on EngineerZone®

Recently Viewed