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REF35

ACTIVE

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

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

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

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User guide: PDF | HTML
Not available on TI.com
Evaluation board

REF35EVM — 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.

 

User guide: PDF | HTML
Not available on TI.com
Simulation model

REF35102 PSpice Model

SNAM282.ZIP (24 KB) - PSpice Model
Simulation model

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SNAM275.ZIP (211 KB) - TINA-TI Spice Model
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REF35160 PSpice Model

SNAM287.ZIP (24 KB) - PSpice Model
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REF35160 TINA-TI SPICE Model

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REF35180 PSpice Model

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REF35180 TINA-TI SPICE Model

SNAM271.ZIP (211 KB) - TINA-TI Spice Model
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REF35205 PSpice Model

SNAM286.ZIP (23 KB) - PSpice Model
Simulation model

REF35205 TINA-TI SPICE Model

SNAM273.ZIP (211 KB) - TINA-TI Spice Model
Simulation model

REF35250 PSpice Model

SNAM291.ZIP (23 KB) - PSpice Model
Simulation model

REF35250 TINA-TI SPICE Model

SNAM272.ZIP (211 KB) - TINA-TI Spice Model
Simulation model

REF35300 PSpice Model

SNAM288.ZIP (24 KB) - PSpice Model
Simulation model

REF35300 TINA-TI SPICE Model

SNAM277.ZIP (211 KB) - TINA-TI Spice Model
Simulation model

REF35330 PSpice Model

SNAM290.ZIP (24 KB) - PSpice Model
Simulation model

REF35330 TINA-TI SPICE Model

SNAM276.ZIP (211 KB) - TINA-TI Spice Model
Simulation model

REF35409 PSpice Model

SNAM289.ZIP (24 KB) - PSpice Model
Simulation model

REF35409 TINA-TI SPICE Model

SNAM278.ZIP (211 KB) - TINA-TI Spice Model
Simulation model

REF35500 PSpice Model

SNAM292.ZIP (24 KB) - PSpice Model
Simulation model

REF35500 TINA-TI SPICE Model

SNAM279.ZIP (211 KB) - TINA-TI Spice Model
Design tool

ADC-TO-VREF-SELECT — 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 (...)
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Reference designs

TIDA-010087 — 100-A Dual-phase digital control battery tester reference design

This reference design illustrates a method to precisely control the current and voltage of a bidirectional interleaved buck-converter power stage using a C2000™ microcontroller (MCU) and a precision ADC ADS131M08. This design achieves less than ±20-mA current regulation error, and (...)
Design guide: PDF
Package Pins Download
DSBGA (YBH) 4 View options
SOT-23 (DBV) 6 View options

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