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Series voltage references

REF35

ACTIVE

650-nA quiescent current, 12-ppm/°C drift, ultra-low-power precision voltage reference

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Data sheet

REF35

ACTIVE
Data sheet Order now

Product details

VO (V) 1.024, 1.2, 1.25, 1.6, 1.8, 2.048, 2.5, 3, 3.3, 4.096, 5 Initial accuracy (max) (%) 0.05 Temp coeff (max) (ppm/°C) 12 Vin (min) (V) 1.7 Vin (max) (V) 6 Iq (typ) (mA) 0.00065, 0.00068 Rating Catalog Features Enable pin LFN 0.1 to 10 Hz (typ) (µVPP) 8.2 Iout/Iz (max) (mA) 10 Operating temperature range (°C) -40 to 125 Shutdown current (ISD) (typ) (µA) 0.1
VO (V) 1.024, 1.2, 1.25, 1.6, 1.8, 2.048, 2.5, 3, 3.3, 4.096, 5 Initial accuracy (max) (%) 0.05 Temp coeff (max) (ppm/°C) 12 Vin (min) (V) 1.7 Vin (max) (V) 6 Iq (typ) (mA) 0.00065, 0.00068 Rating Catalog Features Enable pin LFN 0.1 to 10 Hz (typ) (µVPP) 8.2 Iout/Iz (max) (mA) 10 Operating temperature range (°C) -40 to 125 Shutdown current (ISD) (typ) (µA) 0.1
DSBGA (YBH) 4 0.64 mm² 0.8 x 0.8 SOT-23 (DBV) 6 8.12 mm² 2.9 x 2.8
  • Ultra-low quiescent current:
    • 650 nA (typical)
  • Initial accuracy: ±0.05% (maximum)
  • Temperature coefficient:
    • 12 ppm/°C (maximum for −40°C to 105°C)
  • Output 1/f noise (0.1 Hz to 10 Hz): 3.3 ppmP-P
  • NR pin to reduce noise
  • EN pin to reduce shutdown current consumption
  • Long-term stability: 40 ppm at 1k hour
  • 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, 5.0 V
  • Small footprint 6-pin SOT−23 package
  • Smallest footprint 4-pin WCSP package
  • Ultra-low quiescent current:
    • 650 nA (typical)
  • Initial accuracy: ±0.05% (maximum)
  • Temperature coefficient:
    • 12 ppm/°C (maximum for −40°C to 105°C)
  • Output 1/f noise (0.1 Hz to 10 Hz): 3.3 ppmP-P
  • NR pin to reduce noise
  • EN pin to reduce shutdown current consumption
  • Long-term stability: 40 ppm at 1k hour
  • 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, 5.0 V
  • Small footprint 6-pin SOT−23 package
  • Smallest footprint 4-pin WCSP package

The REF35 is a family of nanopower, low-drift, high-precision series reference devices. The REF35 family features ±0.05% initial accuracy with 650 nA typical power consumption. The temperature coefficient (12 ppm/°C) and long-term stability (40 ppm at 1000 hours) of the device can help improve system stability and reliability. The low power consumption combined with high precision specifications are 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. With this feature set, REF35 creates a strong low-noise, high accuracy power supply for precision sensors and 12–16b data converters.

The family is specified for operation from –40°C to 105°C and is functional over –55°C to 125°C. The wide temperature is suited for industrial applications.

REF35 is available in wide output voltage variants starting from 1.024 V to 5.0 V. The device is offered in a space-saving, 6-pin SOT-23 and 4-pin WCSP package options. Contact your local TI sales representative for available voltage and package options.

The REF35 is a family of nanopower, low-drift, high-precision series reference devices. The REF35 family features ±0.05% initial accuracy with 650 nA typical power consumption. The temperature coefficient (12 ppm/°C) and long-term stability (40 ppm at 1000 hours) of the device can help improve system stability and reliability. The low power consumption combined with high precision specifications are 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. With this feature set, REF35 creates a strong low-noise, high accuracy power supply for precision sensors and 12–16b data converters.

The family is specified for operation from –40°C to 105°C and is functional over –55°C to 125°C. The wide temperature is suited for industrial applications.

REF35 is available in wide output voltage variants starting from 1.024 V to 5.0 V. The device is offered in a space-saving, 6-pin SOT-23 and 4-pin WCSP package options. Contact your local TI sales representative for available voltage and package options.
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Technical documentation

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Type Title Date
* Data sheet REF35 Ultra Low-Power, High-Precision Voltage Reference datasheet (Rev. A) PDF | HTML 18 Aug 2022
Application note Voltage Reference Selection and Design Tips For Data Converters (Rev. B) PDF | HTML 09 Jan 2024
White paper Simplifying Power Conversion in High-Voltage Systems PDF | HTML 09 Nov 2023
White paper Simplifying Power Architectures With Low-Noise Power Devices PDF | HTML 07 Nov 2023
E-book Tips and tricks for designing with voltage references (Rev. A) 07 May 2021
White paper Simplifying Signal Chain Design for High Performance in Small Systems 22 Oct 2020
Application note Precision Current Sources and Sinks Using Voltage References 30 Jun 2020
Application brief Voltage Reference Solutions in Motor Control Drives 29 Jul 2019
White paper Voltage reference selection basics white paper (Rev. A) 23 Oct 2018
Technical article Accurately measure vital signs with low Iq and a small form factor (Rev. B) PDF | HTML 28 Mar 2018
Analog Design Journal Getting the most out of your instrumentation amplifier design 10 Oct 2005

Design & development

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User guide: PDF | HTML
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Design tool

ADC-TO-VREF-SELECT — ADC to series voltage reference selection tool

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Simulation tool

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DSBGA (YBH) 4 View options
SOT-23 (DBV) 6 View options
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