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

REF6250

ACTIVE

5-V, 3-ppm/°C high-precision voltage reference with integrated buffer & enable pin

Order now
Data sheet

REF6250

ACTIVE
Data sheet Order now

Product details

VO (V) 5 Initial accuracy (max) (%) 0.05 Temp coeff (max) (ppm/°C) 3 Vin (min) (V) 5.3 Vin (max) (V) 5.5 Iq (typ) (mA) 0.83, 830 Rating Catalog Features Integrated low-output impedance buffer LFN 0.1 to 10 Hz (typ) (µVPP) 15 Iout/Iz (max) (mA) 3 Operating temperature range (°C) -40 to 125 Shutdown current (ISD) (typ) (µA) 1
VO (V) 5 Initial accuracy (max) (%) 0.05 Temp coeff (max) (ppm/°C) 3 Vin (min) (V) 5.3 Vin (max) (V) 5.5 Iq (typ) (mA) 0.83, 830 Rating Catalog Features Integrated low-output impedance buffer LFN 0.1 to 10 Hz (typ) (µVPP) 15 Iout/Iz (max) (mA) 3 Operating temperature range (°C) -40 to 125 Shutdown current (ISD) (typ) (µA) 1
VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Excellent Temperature Drift Performance
    • 3 ppm/°C (max) from 0°C to +70°C
  • Extremely Low Noise
    • Total Noise: 5 µVRMS With 47-µF Capacitor
    • 1/f Noise (0.1 Hz to 10 Hz): 3 µVPP/V
  • Integrated ADC Drive Buffer
    • Low Output Impedance: < 50 mΩ (0-200 kHz)
    • First Sample Precise to 18 Bits With ADS8881
    • Enables Burst-Mode DAQ Systems
  • Low Supply Current: 820 µA
  • Low Shutdown Current: 1 µA
  • High Initial Accuracy: ±0.05%
  • Very-Low Noise and Distortion
    • SNR: 100.5 dB, THD: –125 dB (ADS8881)
    • SNR: 106 dB, THD: –120 dB (ADS127L01)
  • Output Current Drive: ±4 mA
  • Programmable Short-Circuit Current
  • Verified to Drive REF Pin of ADS88xx family of SAR ADCs and ADS127xx family of Wideband ΔΣ ADCs
  • Excellent Temperature Drift Performance
    • 3 ppm/°C (max) from 0°C to +70°C
  • Extremely Low Noise
    • Total Noise: 5 µVRMS With 47-µF Capacitor
    • 1/f Noise (0.1 Hz to 10 Hz): 3 µVPP/V
  • Integrated ADC Drive Buffer
    • Low Output Impedance: < 50 mΩ (0-200 kHz)
    • First Sample Precise to 18 Bits With ADS8881
    • Enables Burst-Mode DAQ Systems
  • Low Supply Current: 820 µA
  • Low Shutdown Current: 1 µA
  • High Initial Accuracy: ±0.05%
  • Very-Low Noise and Distortion
    • SNR: 100.5 dB, THD: –125 dB (ADS8881)
    • SNR: 106 dB, THD: –120 dB (ADS127L01)
  • Output Current Drive: ±4 mA
  • Programmable Short-Circuit Current
  • Verified to Drive REF Pin of ADS88xx family of SAR ADCs and ADS127xx family of Wideband ΔΣ ADCs

The voltage references in the REF6000 family have an integrated low output impedance buffer that enables the user to directly drive the reference (REF) pin of precision data converters, while preserving linearity, distortion, and noise performance. Most precision SAR and delta-sigma analog-to-digital converters (ADCs), switch binary-weighted capacitors onto the REF pin during the conversion process. In order to support this dynamic load, the output of the voltage reference must be buffered with a low-output impedance, high-bandwidth buffer. The REF6000 family devices are well suited, but not limited, to drive the REF pin of the ADS88xx family of SAR ADCs, and ADS127xx family of delta-sigma ADCs, as well as precision digital-to-analog converters (DACs).

The REF6000 family of is able to maintain an output voltage within 1LSB (18-bit) with minimal droop, even during the first conversion while driving the REF pin of the ADS8881. This feature is useful in burst-mode, event-triggered, equivalent-time sampling, and variable-sampling-rate data-acquisition systems. The REF62xx variants of REF6000 family specify a maximum temperature drift of just 3 ppm/°C and initial accuracy of 0.05% for both the voltage reference and the low output impedance buffer combined. For various temperature drift options in REF6000 family, see the Device Comparison Table.

The voltage references in the REF6000 family have an integrated low output impedance buffer that enables the user to directly drive the reference (REF) pin of precision data converters, while preserving linearity, distortion, and noise performance. Most precision SAR and delta-sigma analog-to-digital converters (ADCs), switch binary-weighted capacitors onto the REF pin during the conversion process. In order to support this dynamic load, the output of the voltage reference must be buffered with a low-output impedance, high-bandwidth buffer. The REF6000 family devices are well suited, but not limited, to drive the REF pin of the ADS88xx family of SAR ADCs, and ADS127xx family of delta-sigma ADCs, as well as precision digital-to-analog converters (DACs).

The REF6000 family of is able to maintain an output voltage within 1LSB (18-bit) with minimal droop, even during the first conversion while driving the REF pin of the ADS8881. This feature is useful in burst-mode, event-triggered, equivalent-time sampling, and variable-sampling-rate data-acquisition systems. The REF62xx variants of REF6000 family specify a maximum temperature drift of just 3 ppm/°C and initial accuracy of 0.05% for both the voltage reference and the low output impedance buffer combined. For various temperature drift options in REF6000 family, see the Device Comparison Table.
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 7
Type Title Date
* Data sheet REF62xx High-Precision Voltage Reference With Integrated ADC Drive Buffer datasheet PDF | HTML 03 Jul 2017
Application note Voltage Reference Selection and Design Tips For Data Converters (Rev. B) PDF | HTML 09 Jan 2024
E-book Tips and tricks for designing with voltage references (Rev. A) 07 May 2021
Application note Long-Term Drift in Voltage References PDF | HTML 25 Mar 2021
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019
White paper Voltage reference selection basics white paper (Rev. A) 23 Oct 2018
White paper Voltage-reference impact on total harmonic distortion 01 Aug 2016

Design & development

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

Evaluation board

REF6025EVM-PDK — REF6025 voltage reference evaluation module

The REF6025EVM-PDK is a platform for evaluating the performance of the REF6025 voltage reference. The evaluation kit brings out the burst mode performance of the device which is a key feature of the device.
User guide: PDF
Not available on TI.com
Simulation model

REF6250 TINA-TI Reference Design

SBOMA71.TSC (7224 KB) - TINA-TI Reference Design
Download
Simulation model

REF6250 TINA-TI Spice Model

SBOMA70.ZIP (14 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
VSSOP (DGK) 8 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