Home Power management Voltage references Series voltage references
Home
Power management
Voltage references
Series voltage references

REF20-Q1

ACTIVE

Automotive low-drift, low-power, series voltage reference

Order now
Data sheet

REF20-Q1

ACTIVE
Data sheet Order now

Product details

VO (V) 2.5, 3, 3.3, 4.096 Initial accuracy (max) (%) 0.05 Temp coeff (max) (ppm/°C) 8 Vin (min) (V) 2.52 Vin (max) (V) 5.5 Iq (typ) (mA) 0.36 Rating Automotive TI functional safety category Functional Safety-Capable Features Enable pin, Multiple outputs LFN 0.1 to 10 Hz (typ) (µVPP) 30 Iout/Iz (max) (mA) 20 Operating temperature range (°C) -40 to 125 Shutdown current (ISD) (typ) (µA) 3.3
VO (V) 2.5, 3, 3.3, 4.096 Initial accuracy (max) (%) 0.05 Temp coeff (max) (ppm/°C) 8 Vin (min) (V) 2.52 Vin (max) (V) 5.5 Iq (typ) (mA) 0.36 Rating Automotive TI functional safety category Functional Safety-Capable Features Enable pin, Multiple outputs LFN 0.1 to 10 Hz (typ) (µVPP) 30 Iout/Iz (max) (mA) 20 Operating temperature range (°C) -40 to 125 Shutdown current (ISD) (typ) (µA) 3.3
SOT-23-THN (DDC) 5 8.12 mm² 2.9 x 2.8
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C7B
  • Functional Safety-Capable
  • Two Outputs, VREF and VREF / 2, for convenient use in single-supply systems
  • Excellent temperature drift performance:
    • 8 ppm/°C (maximum) from –40°C to 125°C
  • High initial accuracy: ±0.05% (maximum)
  • VREF and VBIAS tracking overtemperature:
    • 7 ppm/°C (maximum) from –40°C to 125°C
  • Microsize package: SOT23-5
  • Low dropout voltage: 10 mV
  • High output current: ±20 mA
  • Low quiescent current: 360 µA
  • Line regulation: 3 ppm/V
  • Load regulation: 8 ppm/mA
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C7B
  • Functional Safety-Capable
  • Two Outputs, VREF and VREF / 2, for convenient use in single-supply systems
  • Excellent temperature drift performance:
    • 8 ppm/°C (maximum) from –40°C to 125°C
  • High initial accuracy: ±0.05% (maximum)
  • VREF and VBIAS tracking overtemperature:
    • 7 ppm/°C (maximum) from –40°C to 125°C
  • Microsize package: SOT23-5
  • Low dropout voltage: 10 mV
  • High output current: ±20 mA
  • Low quiescent current: 360 µA
  • Line regulation: 3 ppm/V
  • Load regulation: 8 ppm/mA

Applications with only a positive supply voltage often require additional stable voltage in the middle of the analog-to-digital converter (ADC) input range to bias input bipolar signals. The REF20xx-Q1 provides a reference voltage (VREF) for the ADC and a second highly-accurate voltage (VBIAS) that can be used to bias the input bipolar signals.

The REF20xx-Q1 offers excellent temperature drift (8 ppm/°C, maximum) and initial accuracy (0.05%) on both the VREF and VBIAS outputs while operating at a quiescent current less than 430 µA. In addition, the VREF and VBIAS outputs track each other with a precision of 7 ppm/°C (maximum) across the temperature range of –40°C to 125°C. All these features increase the precision of the signal chain and decrease board space, while reducing the cost of the system as compared to a discrete solution. Extremely low dropout voltage of only 10 mV allows operation from very low input voltages, which can be very useful in battery-operated systems.

Both the VREF and VBIAS voltages have the same excellent specifications and can sink and source current equally well. Very good long-term stability and low noise levels make these devices ideally-suited for high-precision applications.

Applications with only a positive supply voltage often require additional stable voltage in the middle of the analog-to-digital converter (ADC) input range to bias input bipolar signals. The REF20xx-Q1 provides a reference voltage (VREF) for the ADC and a second highly-accurate voltage (VBIAS) that can be used to bias the input bipolar signals.

The REF20xx-Q1 offers excellent temperature drift (8 ppm/°C, maximum) and initial accuracy (0.05%) on both the VREF and VBIAS outputs while operating at a quiescent current less than 430 µA. In addition, the VREF and VBIAS outputs track each other with a precision of 7 ppm/°C (maximum) across the temperature range of –40°C to 125°C. All these features increase the precision of the signal chain and decrease board space, while reducing the cost of the system as compared to a discrete solution. Extremely low dropout voltage of only 10 mV allows operation from very low input voltages, which can be very useful in battery-operated systems.

Both the VREF and VBIAS voltages have the same excellent specifications and can sink and source current equally well. Very good long-term stability and low noise levels make these devices ideally-suited for high-precision applications.
filter Find other Series voltage references
Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 8
Type Title Date
* Data sheet REF20xx-Q1 Low-Drift, Low-Power, Dual-Output, VREF and VREF / 2 Voltage References datasheet PDF | HTML 16 Mar 2021
Application note Voltage Reference Selection and Design Tips For Data Converters (Rev. B) PDF | HTML 09 Jan 2024
Functional safety information REF20-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 26 Aug 2021
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

Design & development

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

Simulation model

REF2041 PSpice Model

SBOM903.ZIP (35 KB) - PSpice Model
Download
Simulation model

REF2041 TINA-TI Reference Design

SBOM904.TSC (21 KB) - TINA-TI Reference Design
Download
Simulation model

REF2041 TINA-TI Spice Model

SBOM905.ZIP (8 KB) - TINA-TI Spice Model
Download
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 (...)
Request
Package Pins CAD symbols, footprints & 3D models
SOT-23-THN (DDC) 5 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos