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Ultra-High-Precision, Ultra-Low-Noise, Series Voltage Reference

Ultra-High-Precision, Ultra-Low-Noise, Series Voltage Reference Features 3ppm/°C (max) Temperature Coefficients and an Excellent ±0.02% (max) Initial Accuracy

Product Details

Key Features

Parametric specs for Voltage References
VOUT (V) 3
5
Temp. Coeff. (ppm/°C) (max) 3
ISUPPLY (µA) (max) 550
Initial Accuracy (% max) (@ +25°C) 0.02
VSUPPLY (V) (min) 2.7
VSUPPLY (V) (max) 12.6
Noise 0.1Hz to 10Hz (µVpp) (typ) 1.35
Oper. Temp. (°C) -40 to +125
Package/Pins See Data Sheet
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Simplified Block Diagram

Technical Docs

Data Sheet Ultra-High-Precision, Ultra-Low-Noise, Series Voltage Reference Dec 01, 2020
App Note Simple, Effective Method and Circuit to Measure Very-Low 1/f Voltage Reference Noise (< 1µVP-P, 0.1Hz to 10Hz)
App Note Improve the Distortion of a Signal Generator to Measure a Wide-Dynamic-Range Data Acquisition System (DAS)
App Note Using the MAX11254EVKIT as a Building Block Platform for Industrial Applications
App Note The Basics of Ventilator Systems
App Note Precision Pressure Sensor Measurements Using the MAX11254 Analog-to-Digital Converter
App Note Voltage Reference Long-Term Stability Reduces Industrial Process Control Calibration Costs
App Note RTD Measurement System Design Essentials
User Guide MAXREFDES32# ZedBoard Quick Start Guide
User Guide MAXREFDES71# ZedBoard Quick Start Guide
User Guide Alameda (MAXREFDES24#) ZedBoard Quick Start Guide
User Guide Alameda (MAXREFDES24#) LX9 Quick Start Guide
User Guide Petaluma (MAXREFDES30#) ZedBoard Quick Start Guide
User Guide Santa Fe (MAXREFDES5#) ZedBoard Quick Start Guide
User Guide Campbell (MAXREFDES4#) Nexys 3 Quick Start Guide
User Guide Fremont (MAXREFDES6#) ZedBoard Quick Start Guide
User Guide Fremont (MAXREFDES6#) Nexys 3 Quick Start Guide
User Guide Carmel (MAXREFDES18#) ZedBoard Quick Start Guide
User Guide Carmel (MAXREFDES18#) LX9 Quick Start Guide
User Guide Campbell (MAXREFDES4#) ZedBoard Quick Start Guide
User Guide Fresno (MAXREFDES11#) ZedBoard Quick Start Guide
User Guide Santa Fe (MAXREFDES5#) Nexys 3 Quick Start Guide
App Note How Signal Chains and PLCs Impact Our Lives
User Guide MAXREFDES46# Quickstart Guide
App Note FPGAs, Twist And Turn Tribulations Just To Connect
App Note Measuring the Invisible with the Old
App Note Getting the Most Out of the MAX14920/MAX14921 High-Accuracy Battery-Measurement AFEs
App Note Optimize Battery Measurement and Cell-Stack Monitoring with Highly Accurate AFE
App Note Digital-to-Analog Converter Fine-Tunes Reference Output
App Note Design Considerations for a Low-Cost Sensor and A/D Interface
App Note Analog ICs for Low Voltage Systems
App Note Ultra-Low-Noise LDO Achieves 6nV/√Hz Noise Performance
App Note Implementing an External Reference and the Resulting Effect on Gain for the MAX149x Sigma-Delta Panel-Meter ADCs
Tutorial Reduce the Chances of Human Error: Part 1, Power and Ground
Tutorial Calculating the Error Budget in Precision Digital-to-Analog Converter (DAC) Applications
Tutorial Understanding Voltage-Reference Topologies and Specifications
Tutorial Managing Noise in the Signal Chain, Part 1: Annoying Semiconductor Noise, Preventable or Inescapable?

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Parameters

Parametric specs for Voltage References
VOUT (V) 3
5
Temp. Coeff. (ppm/°C) (max) 3
ISUPPLY (µA) (max) 550
Initial Accuracy (% max) (@ +25°C) 0.02
VSUPPLY (V) (min) 2.7
VSUPPLY (V) (max) 12.6
Noise 0.1Hz to 10Hz (µVpp) (typ) 1.35
Oper. Temp. (°C) -40 to +125
Package/Pins See Data Sheet

Key Features

  • Ultra-Low 1.3µVP-P Noise (0.1Hz to 10Hz, 2.048V Output)
  • Ultra-Low 3ppm/°C (max) Temperature Coefficient
  • ±0.02% (max) Initial Accuracy
  • Wide (VOUT + 200mV) to 12.6V Supply Voltage Range
  • Low 200mV (max) Dropout Voltage
  • 380µA Quiescent Supply Current
  • 10mA Sink/Source-Current Capability
  • Stable with CLOAD = 0.1µF to 10µF
  • Low 20ppm/1000hr Long-Term Stability
  • 0.025Ω (max) Load Regulation
  • 20µV/V (max) Line Regulation
  • Force and Sense Outputs for Remote Sensing

Applications/Uses

  • Automated Test Equipment (ATE)
  • Digital Voltmeters
  • High-Accuracy Industrial and Process Control
  • High-Accuracy Reference Standard
  • High-Resolution A/D and D/A Converters
  • Precision Current Sources

Description

The MAX6126 is an ultra-low-noise, high-precision, low-dropout voltage reference. This family of voltage references feature curvature-correction circuitry and high-stability, laser-trimmed, thin-film resistors that result in 3ppm/°C (max) temperature coefficients and an excellent ±0.02% (max) initial accuracy. The proprietary low-noise reference architecture produces a low flicker noise of 1.3µVP-P and wideband noise as low as 60nV/√Hz (2.048V output) without the increased supply current usually found in low-noise references. Improve wideband noise to 35nV/√Hz and AC power-supply rejection by adding a 0.1µF capacitor at the noise reduction pin. The MAX6126 series mode reference operates from a wide 2.7V to 12.6V supply voltage range and load-regulation specifications are guaranteed to be less than 0.025Ω for sink and source currents up to 10mA. These devices are available over the automotive temperature range of -40°C to +125°C.

The MAX6126 typically draws 380μA of supply current and is available in 2.048V, 2.500V, 2.800V, 3.000V, 3.300V, 3.600V, 4.096V, and 5.000V output voltages. The MAX6126 also feature dropout voltages as low as 200mV. Unlike conventional shunt-mode (two-terminal) references that waste supply current and require an external resistor, the MAX6126 offers supply current that is virtually independent of supply voltage and does not require an external resistor. The MAX6126 is stable with 0.1µF to 10µF of load capacitance.

The MAX6126 is available in the tiny 8-pin µMAX®, as well as 8-pin SO packages.

Simplified Block Diagram

MAX6126: Typical Operating Circuit MAX6126: Typical Operating Circuit Zoom icon

Technical Docs

Data Sheet Ultra-High-Precision, Ultra-Low-Noise, Series Voltage Reference Dec 01, 2020
App Note Simple, Effective Method and Circuit to Measure Very-Low 1/f Voltage Reference Noise (< 1µVP-P, 0.1Hz to 10Hz)
App Note Improve the Distortion of a Signal Generator to Measure a Wide-Dynamic-Range Data Acquisition System (DAS)
App Note Using the MAX11254EVKIT as a Building Block Platform for Industrial Applications
App Note The Basics of Ventilator Systems
App Note Precision Pressure Sensor Measurements Using the MAX11254 Analog-to-Digital Converter
App Note Voltage Reference Long-Term Stability Reduces Industrial Process Control Calibration Costs
App Note RTD Measurement System Design Essentials
User Guide MAXREFDES32# ZedBoard Quick Start Guide
User Guide MAXREFDES71# ZedBoard Quick Start Guide
User Guide Alameda (MAXREFDES24#) ZedBoard Quick Start Guide
User Guide Alameda (MAXREFDES24#) LX9 Quick Start Guide
User Guide Petaluma (MAXREFDES30#) ZedBoard Quick Start Guide
User Guide Santa Fe (MAXREFDES5#) ZedBoard Quick Start Guide
User Guide Campbell (MAXREFDES4#) Nexys 3 Quick Start Guide
User Guide Fremont (MAXREFDES6#) ZedBoard Quick Start Guide
User Guide Fremont (MAXREFDES6#) Nexys 3 Quick Start Guide
User Guide Carmel (MAXREFDES18#) ZedBoard Quick Start Guide
User Guide Carmel (MAXREFDES18#) LX9 Quick Start Guide
User Guide Campbell (MAXREFDES4#) ZedBoard Quick Start Guide
User Guide Fresno (MAXREFDES11#) ZedBoard Quick Start Guide
User Guide Santa Fe (MAXREFDES5#) Nexys 3 Quick Start Guide
App Note How Signal Chains and PLCs Impact Our Lives
User Guide MAXREFDES46# Quickstart Guide
App Note FPGAs, Twist And Turn Tribulations Just To Connect
App Note Measuring the Invisible with the Old
App Note Getting the Most Out of the MAX14920/MAX14921 High-Accuracy Battery-Measurement AFEs
App Note Optimize Battery Measurement and Cell-Stack Monitoring with Highly Accurate AFE
App Note Digital-to-Analog Converter Fine-Tunes Reference Output
App Note Design Considerations for a Low-Cost Sensor and A/D Interface
App Note Analog ICs for Low Voltage Systems
App Note Ultra-Low-Noise LDO Achieves 6nV/√Hz Noise Performance
App Note Implementing an External Reference and the Resulting Effect on Gain for the MAX149x Sigma-Delta Panel-Meter ADCs
Tutorial Reduce the Chances of Human Error: Part 1, Power and Ground
Tutorial Calculating the Error Budget in Precision Digital-to-Analog Converter (DAC) Applications
Tutorial Understanding Voltage-Reference Topologies and Specifications
Tutorial Managing Noise in the Signal Chain, Part 1: Annoying Semiconductor Noise, Preventable or Inescapable?

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .