Series voltage references

Maintain accurate output voltages for your signal-chain application

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Our high-precision and low-noise series voltage references are stable across a wide temperature range. We also offer series voltage references with low-power consumption and small packages for battery-powered and space-constrained applications. Many of our series voltage references are AEC-Q100 qualified for automotive applications.

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High precision

Achieve stability across variable temperatures and voltages with low drift and high initial accuracy.

Low IQ

Minimize power consumption and extend battery life.

Small package

Use in space-constrained applications with micro-sized solutions.

Dual output

Reduce errors, cost and solution size with two outputs (VREF and VREF/2).

Automotive

Leverage AEC-Q100-qualified series voltage references for automotive designs.

Featured series voltage references

Design & development resources

Design tool
ADC to series voltage reference selection tool

The ADC-TO-VREF-SELECT tool enables the pairing of TI analog-to-digital converters (ADCs) and series voltage references. Users can select an ADC device and the desired input voltage, and the tool will list the top three voltage reference recommendations. There is also an option to use (...)

Evaluation board
REF35 evaluation module for 680-nA IQ, 6-ppm/°C drift, ultra-low-power precision voltage reference

The REF35 evaluation module (EVM) is a platform for developing the REF35 ultra-low-power voltage reference. REF35 has a 10-ppm/°C (max) temperature drift and is used primarily as a precision voltage reference for low-power data converters.

 

Evaluation board
REF70 evaluation module for ultra-high-precision voltage reference with low noise and low drift

The REF70 evaluation module (EVM) is a platform for evaluating the REF70, which is an ultra-low-noise, high-precision voltage reference. REF70 offers an ultra-low 1/f noise of 0.23 ppmp-p during operation, while maintaining a very precise voltage output over temperature of 2 ppm/°C. REF70EVM (...)

Reference designs related to Series voltage references

Use our reference design selection tool to find designs that best match your application and parameters.

REF54
Series voltage references

0.8ppm/°C drift (max), 0.11ppmp-p 1/f noise, 380μA current precision voltage reference

Approx. price (USD) 1ku | 6.95

REF35-Q1
Series voltage references

Automotive, 650-nA quiescent current, 15-ppm/°C drift, ultra-low-power precision voltage reference

Approx. price (USD) 1ku | 0.824

Power trends

Low quiescent current (IQ)

Minimize power consumption and extend battery life with low quiescent current (IQ) series references. Our broad portfolio of low-IQ series voltage references helps minimize power losses in all systems and obtain the most run time from battery-operated devices like blood glucose monitors, wireless headsets and pressure transmitters. Our small form-factor ICs help your applications achieve low standby power, while lowering system cost.

Featured products for low quiescent current (IQ)
REF35 ACTIVE 650-nA quiescent current, 12-ppm/°C drift, ultra-low-power precision voltage reference
REF34-Q1 ACTIVE Automotive, low-drift, low-power, small-footprint series voltage reference
REF3325 ACTIVE 2.5-V, 30-ppm/°C drift, 3.9-µA, 3-pin SOT-23, 3-pin SC70, 8-pin UQFN voltage reference
Low noise & precision

Achieve reliable stability for variable temperatures and voltages with high-precision series references. Our precision series voltage references offer best-in-class performance for many demanding industrial and automotive applications.

Featured products for low noise & precision
REF3425 ACTIVE 2.5-V, low-drift, low-power, small-footprint series voltage reference
REF5050 ACTIVE 5-V, 3-µVpp/V noise, 3-ppm/°C drift precision series voltage reference
REF70 ACTIVE Ultra-high-precision voltage reference with low noise and low drift

Discover featured applications

Hybrid, Electric & Powertrain Systems
Elevate your HEV/EV signal-chain designs with series voltage references that don't compromise on precision
Body Electronics & Lighting
Maximize measurement accuracy by adding a high-precision series voltage reference to your body control modules
Grid Infrastructure
Pair series voltage references with data converters for high-precision measurement in grid infrastructures
Test & Measurement
Elevate the accuracy and performance of your test and measurement designs with our precision references
Factory Automation
Bring accuracy to the forefront by adding series voltage references to your factory automation designs
Medical
Reach new levels in power and noise requirements for medical applications using precision or nanopower series voltage references

Elevate your HEV/EV signal-chain designs with series voltage references that don't compromise on precision

For accurate and reliable real-time system diagnostics, next-generation hybrid electric vehicles (HEVs) and EVs require precision voltage references for data conversion. We offer high-precision solutions to measure critical system parameters with best-in-class power consumption, noise and temperature drift.

Benefits: 

  • Low temperature drift (to 6 ppm/°C with the REF34-Q1)
  • Microampere power consumption
  • An optional ENABLE pin saves power by setting a shutdown mode to consume 3 µA of standby current

Featured resources

REFERENCE DESIGNS
  • TIDA-00753 – Three Phase AC Current Measurements Using Current Transformer Reference Design
  • TIDA-020018 – Automotive shunt-based isolated current sensor reference design for DC/DC and OBC applications
  • PMP22650 – GaN-based, 6.6-kW, bidirectional, onboard charger reference design
PRODUCTS
  • REF5025A-Q1 – Automotive, low-noise, very-low drift, precision 2.5-V series voltage reference
  • REF34-Q1 – Automotive, low-drift, low-power, small-footprint series voltage reference
  • REF4132-Q1 – Automotive 12-ppm/°C low-noise low-power precision voltage reference

Maximize measurement accuracy by adding a high-precision series voltage reference to your body control modules

Preserve stability in body control modules and automotive gateways across system or environmental changes by adding a series voltage reference to your data converters. Take advantage of our low-noise and high-precision references in small packages.

Benefits:  

  • Low temperature drift (to 6 ppm/°C with the REF34-Q1)
  • Microampere power consumption
  • An optional ENABLE pin saves power by setting a shutdown mode to consume 3 µA of standby current 

Featured resources

PRODUCTS
  • REF34-Q1 – Automotive, low-drift, low-power, small-footprint series voltage reference
  • REF5025A-Q1 – Automotive, low-noise, very-low drift, precision 2.5-V series voltage reference

Pair series voltage references with data converters for high-precision measurement in grid infrastructures

Data converters are essential to every grid instructure application, including electric vehicle charging stations, smart meters, solar energy systems and residential breakers. Our porfolio of data converter voltage references can take your design to new heights.

Benefits:

  • A large selection of voltage references to pair with 10- to 24-bit data converters
  • Thermal drift as low as 25 ppm at 1k hr and 2 ppm/°C
  • Peak-to-peak noise as low as 0.23 ppm

Featured resources

REFERENCE DESIGNS
  • TIDA-00119 – 12-Bit, 8 Channel, Integrated Analog Input module for Programmable Logic Controllers (PLC)
  • TIDA-00171 – Isolated Current Shunt and Voltage Measurement Reference Design for Motor Drives
  • TIDM-SERVODRIVE – Industrial Servo Drive and AC Inverter Drive Reference Design
PRODUCTS
  • REF5025 – 2.5-V, 3-µVpp/V noise, 3-ppm/°C drift precision series voltage reference
  • REF4132 – 12-ppm/°C low-noise low-power precision voltage reference
  • REF35 – 650-nA quiescent current, 12-ppm/°C drift, ultra-low-power precision voltage reference
HARDWARE DEVELOPMENT
  • REF35EVM – REF35 evaluation module for 680-nA IQ, 6-ppm/°C drift, ultra-low-power precision voltage reference

Elevate the accuracy and performance of your test and measurement designs with our precision references

Our precision series references provide best-in-class noise, temperature coefficient and long-term drift for test and measurement applications such as automated test equipment, electronic lab and field test equipment, and analytic instrumentations.

Benefits:

  • Noise as low as 0.23 ppm
  • Accuracy as low as ±0.025%
  • 2 ppm/°C temperature drift

Featured resources

REFERENCE DESIGNS
  • TIDM-CONNECTED-ETHERNET – Connected Ethernet, USB, and LCD Reference Design
  • TIPD164 – Analog Input Module for Industrial Outputs and Temperature Sensors Reference Design
  • TIPD159 – Voltage-Mode Multiplying DAC Reference Design
PRODUCTS
  • REF70 – Ultra-high-precision voltage reference with low noise and low drift
  • REF5025 – 2.5-V, 3-µVpp/V noise, 3-ppm/°C drift precision series voltage reference
  • REF35 – 650-nA quiescent current, 12-ppm/°C drift, ultra-low-power precision voltage reference
TECHNICAL RESOURCES

Bring accuracy to the forefront by adding series voltage references to your factory automation designs

In factory automation, current and voltage fluctuations may cause system faults and signal transmission failures. A series voltage reference enables quality analog signal measurements from the data converters in programmable logic controller, field transmitter or industrial PC designs.

Benefits: 

  • Adjustable devices offered in multiple output voltages
  • Low temperature drift and quiescent current (IQ)
  • Shutdown mode enables ultra-low IQ consumption

Featured resources

REFERENCE DESIGNS
  • TIDA-00468 – Optimized Latency, Power and Memory Footprint Thermocouple Sensing Front-end Reference Design
PRODUCTS
  • REF35 – 650-nA quiescent current, 12-ppm/°C drift, ultra-low-power precision voltage reference
  • REF5025 – 2.5-V, 3-µVpp/V noise, 3-ppm/°C drift precision series voltage reference
  • REF4132 – 12-ppm/°C low-noise low-power precision voltage reference
HARDWARE DEVELOPMENT
  • REF35EVM – REF35 evaluation module for 680-nA IQ, 6-ppm/°C drift, ultra-low-power precision voltage reference
  • ADS1148EVM-PDK – ADS1148 performance demonstration kit for 16-bit 2-kSPS ADC with PGA for sensor measurement
TECHNICAL RESOURCES

Reach new levels in power and noise requirements for medical applications using precision or nanopower series voltage references

Series voltage references extract highly accurate measurements from the analog front end of medical applications. Our portfolio enables battery-powered solutions, noise-sensitive solutions, and everything in between.

Benefits:

  • The REF35 saves space in a small-outline transistor (SOT)-23-6 package with ultra-low quiescent current; low drift; and 11 voltage variants, from 1.024 V to 5.0 V
  • The REF70 elevates noise-sensitive medical imaging applications by pairing with high-resolution data converters, offering low noise in both ceramic and plastic packages

Featured resources

REFERENCE DESIGNS
  • TIPD115 – Data acquisition optimized for low distortion, low noise 18-bit 1-MSPS reference design
  • TIPD164 – Analog Input Module for Industrial Outputs and Temperature Sensors Reference Design
PRODUCTS
  • REF35 – 650-nA quiescent current, 12-ppm/°C drift, ultra-low-power precision voltage reference
  • REF70 – Ultra-high-precision voltage reference with low noise and low drift

Technical resources

Application brief
Application brief
Choosing the Right Voltage Reference for Your Automotive Application
Learn how to select the correct voltage reference for automotive applications requiring a precise data converter such as ADAS, body electronics and powertrain systems.
document-pdfAcrobat PDF
Video series
Video series
Voltage Reference Overview for ADC
This video covers reference specifications to gain a deeper understanding of how the voltage reference impacts the performance of the ADC system.
Video
Video
Important Parameters of a Voltage Reference
This video will review the most important parameters in a VREF and go over how to interpret each of these parameters in a system.