MAX6126
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
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Overview
Features and Benefits
- 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
Product Details
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.
Applications
- 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
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
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MAX6126 Reliability Data1/12/2023PDF112K
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UG-6207: MAXREFDES46# Quickstart Guide9/3/2015PDF464K
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UG-5866: MAXREFDES71# ZedBoard Quick Start Guide6/27/2014PDF2M
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UG-5885: MAXREFDES32# ZedBoard Quick Start Guide6/27/2014PDF2M
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UG-5847: Alameda (MAXREFDES24#) ZedBoard Quick Start Guide5/6/2014PDF914K
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UG-5846: Alameda (MAXREFDES24#) LX9 Quick Start Guide5/6/2014PDF967K
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UG-5828: Petaluma (MAXREFDES30#) ZedBoard Quick Start Guide4/28/2014PDF1M
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UG-5743: Carmel (MAXREFDES18#) LX9 Quick Start Guide9/23/2013PDF938K
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UG-5744: Carmel (MAXREFDES18#) ZedBoard Quick Start Guide9/23/2013PDF905K
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UG-5745: Fremont (MAXREFDES6#) Nexys 3 Quick Start Guide9/19/2013PDF1M
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UG-5746: Fremont (MAXREFDES6#) ZedBoard Quick Start Guide9/19/2013PDF1M
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UG-5651: Campbell (MAXREFDES4#) ZedBoard Quick Start Guide5/20/2013PDF1M
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UG-5630: Fresno (MAXREFDES11#) ZedBoard Quick Start Guide4/25/2013PDF888K
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UG-5639: Santa Fe (MAXREFDES5#) ZedBoard Quick Start Guide4/22/2013PDF857K
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UG-5578: Santa Fe (MAXREFDES5#) Nexys 3 Quick Start Guide2/4/2013PDF861K
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UG-5579: Campbell (MAXREFDES4#) Nexys 3 Quick Start Guide2/4/2013PDF875K
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Design Note- ds2-analog_voltage-ref-long-term-stability10/10/2022PDF1M
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Precision Pressure Sensor Measurements Using the MAX11254 Analog-to-Digital Converter6/25/2020
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The Basics of Ventilator Systems5/13/2020
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Using the MAX11254EVKIT as a Building Block Platform for Industrial Applications9/2/2016
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Optimize Battery Measurement and Cell-Stack Monitoring with Highly Accurate AFE3/30/2015
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Measuring the Invisible with the Old5/31/2012
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Digital-to-Analog Converter Fine-Tunes Reference Output5/15/2012
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Ultra-Low-Noise LDO Achieves 6nV/√Hz Noise Performance12/22/2005
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Implementing an External Reference and the Resulting Effect on Gain for the MAX149x Sigma-Delta Panel-Meter ADCs9/23/2005
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Voltage Reference Long-Term Stability Reduces Industrial Process Control Calibration Costs5/23/2019
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Simple, Effective Method and Circuit to Measure Very-Low 1/f Voltage Reference Noise (< 1µVP-P, 0.1Hz to 10Hz)10/24/2016
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RTD Measurement System Design Essentials6/15/2016
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Managing Noise in the Signal Chain, Part 1: Annoying Semiconductor Noise, Preventable or Inescapable?8/7/2014
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Getting the Most Out of the MAX14920/MAX14921 High-Accuracy Battery-Measurement AFEs11/20/2013
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How Signal Chains and PLCs Impact Our Lives3/29/2012
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Reduce the Chances of Human Error: Part 1, Power and Ground3/8/2011
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Calculating the Error Budget in Precision Digital-to-Analog Converter (DAC) Applications9/25/2008
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Design Considerations for a Low-Cost Sensor and A/D Interface3/24/2006
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Analog ICs for Low Voltage Systems3/23/2006
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Understanding Voltage-Reference Topologies and Specifications11/19/2001
Reference Designs (15)
Design Resources
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