REF20-Q1
- 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.
Technical documentation
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.
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
SOT-23-THN (DDC) | 5 | Ultra Librarian |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
- Fab location
- Assembly location
Support & training
TI E2E™ forums with technical support from TI engineers
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.