Texas Instruments

REF35 Ultra-Low-Power High-Precision Voltage Reference

Texas Instruments' reference offers low current consumption and class-leading performance specifications

Image of Texas Instruments' REF35 Ultra-Low-Power High-Precision Voltage ReferenceTexas Instruments' REF35 is a nanopower low-drift, high-precision reference device that features ±0.05% initial accuracy with 650 nA typical power consumption. The temperature coefficient (12 ppm/°C) and long-term stability (40 ppm at 1,000 hours) can improve the system stability and reliability. The low power consumption combined with high-precision specifications make the reference device suitable for wide variety of portable and low-current applications.

The REF35 supplies up to 10 mA current with 3.3 ppmp-p noise and 20 ppm/mA load regulation. These features create a strong low-noise, high-accuracy power supply for precision sensors and 12b to 16b data converters. The operating temperature range is -40°C to +105°C and the device is functional over the range of -55°C to +125°C. The wide temperature range is suited for industrial applications. The REF35 is available in wide output voltage variants with a range of 1.024 V to 5.0 V. The device is offered in space-saving 6-pin SOT-23 and 4-pin WCSP packages.

Features
  • Ultra-low quiescent current: 650 nA (typ.)
  • Initial accuracy: ±0.05% (max.)
  • Temperature coefficient: 12 ppm/°C (max. for -40°C to +105°C)
  • Output 1/f noise (0.1 Hz to 10 Hz): 3.3 ppmp-p
  • NR pin reduces the noise
  • EN pin reduces the shutdown current consumption
  • Long-term stability: 40 ppm at 1,000 hrs.
  • Thermal hysteresis: 70 ppm 
  • Specified temperature range: -40°C to +105°C
  • Operating temperature range: -55°C to +125°C
  • Output current: +10 mA, -5 mA
  • Input voltage: VREF + VDO to 6 V
  • Output voltage options: 1.024 V, 1.2 V, 1.25 V, 1.6 V, 1.8 V, 2.048 V, 2.5 V, 3.0 V, 3.3 V, 4.096 V, and 5.0 V
  • Packages with small and extremely small footprints: 6-pin SOT−23 and 4-pin WCSP
Applications
  • Flow transmitters
  • Blood glucose monitors
  • Servo drive control modules
  • Power quality analyzers
  • Fault indicators
  • Oscilloscopes
  • Process analytics
  • Optical Modules

REF35 Ultra-Low-Power High-Precision Voltage References

ImageManufacturer Part NumberDescriptionVoltage - Output (Min/Fixed)Noise - 0.1Hz to 10HzVoltage - InputAvailable QuantityPriceView Details
IC VREF SERIES 1.25V SOT23-6REF35125QDBVRIC VREF SERIES 1.25V SOT23-61.25V3.3ppmp-p1.5V ~ 6V9301 - Immediate$1.87View Details
IC VREF SERIES SOT23-6REF35300QDBVRIC VREF SERIES SOT23-63V3.8ppmp-p3.25V ~ 6V4447 - Immediate$1.87View Details
IC VREF SERIES 1.6V SOT23-6REF35160QDBVRIC VREF SERIES 1.6V SOT23-61.6V3.8ppmp-p1.85V ~ 6V40 - Immediate$1.87View Details
IC VREF SERIES 2.048V SOT23-6REF35205QDBVRIC VREF SERIES 2.048V SOT23-62.048V3.8ppmp-p2.298V ~ 6V3117 - Immediate$1.87View Details
IC VREF SERIES SOT23-6REF35250QDBVRIC VREF SERIES SOT23-62.5V3.8ppmp-p2.75V ~ 6V5190 - Immediate$1.87View Details
IC VREF SERIES SOT23-6REF35500QDBVRIC VREF SERIES SOT23-65V3.3ppmp-p5.25V ~ 6V1382 - Immediate$2.06View Details
IC VREF SERIES 1.024V SOT23-6REF35102QDBVRIC VREF SERIES 1.024V SOT23-61.024V3.8ppmp-p1.274V ~ 6V12020 - Immediate$1.87View Details
IC VREF SERIES 1.8V SOT23-6REF35180QDBVRIC VREF SERIES 1.8V SOT23-61.8V3.8ppmp-p2.05V ~ 6V6261 - Immediate$1.87View Details
IC VREF SERIES 1.2V SOT23-6REF35120QDBVRIC VREF SERIES 1.2V SOT23-61.2V3.3ppmp-p1.45V ~ 6V159 - Immediate$1.87View Details
IC VREF SERIES SOT23-6REF35360QDBVRIC VREF SERIES SOT23-63.6V3.8ppmp-p3.85V ~ 6V2366 - Immediate$1.87View Details
IC VREF SERIES SOT23-6REF35330QDBVRIC VREF SERIES SOT23-63.3V3.8ppmp-p3.55V ~ 6V5999 - Immediate$1.87View Details
IC VREF SERIES 1.7V SOT23-6REF35170QDBVRIC VREF SERIES 1.7V SOT23-61.7V3.3ppmp-p1.95V ~ 6V2153 - Immediate$1.87View Details
IC VREFREF35409QDBVRIC VREF2313 - Immediate$1.87View Details

Evaluation Board

ImageManufacturer Part NumberDescriptionTypeFunctionEmbeddedAvailable QuantityPriceView Details
EVAL BOARD FOR REF35REF35EVMEVAL BOARD FOR REF35Power ManagementVoltage ReferenceNo0 - Immediate$36.28View Details
Published: 2023-07-21