REF6050
5-V, 5-ppm/°C high-precision voltage reference with integrated buffer & enable pin
REF6050
- Excellent Temperature Drift Performance
- 5 ppm/°C (max) from –40°C to +125°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
- 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 REF6000 family of voltage references have an integrated low output impedance buffer that enable the user to directly drive the REF pin of precision data converters, while preserving linearity, distortion, and noise performance. Most precision SAR and Delta-Sigma 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 other digital-to-analog converters (DACs).
The REF6000 family of voltage references are 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 REF60xx variants of REF6000 family specify a maximum temperature drift of just 5 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.
Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | REF60xx High-Precision Voltage Reference With Integrated ADC Drive Buffer datasheet (Rev. B) | PDF | HTML | 29 Aug 2016 |
Circuit design | DAC force and sense reference drive circuit (Rev. A) | PDF | HTML | 20 Sep 2024 | |
Circuit design | Circuit to drive a switched capacitor reference input for high-precision devices (Rev. A) | PDF | HTML | 19 Sep 2024 | |
E-book | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 28 Jun 2019 | ||
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.
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PLABS-SAR-EVM-PDK — TI Precision Labs SAR ADC Evaluation Module Performance Demonstration Kit (PDK)
PLABS-SAR-EVM-PDK is an experimental platform used in conjunction with TI Precision Labs videos to gain a deeper understanding of successive approximation register (SAR) analog-to-digital converter (ADC) circuits. The evaluation module (EVM) platform contains two channels for common SAR (...)
REF6025EVM-PDK — REF6025 voltage reference evaluation module
PSpice Simulation Companion for DAC Force And Sense Reference Drive Circuit
TINA-TI Simulation Companion for DAC Force And Sense Reference Drive Circuit (Rev. A)
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
TIDA-01057 — Reference Design Maximizing Signal Dynamic Range for True 10 Vpp Differential Input to 20 bit ADC
TIDA-01053 — ADC Driver Reference Design Optimizing THD, Noise, and SNR for High Dynamic Range Instrumentation
TIDA-01052 — ADC Driver Reference Design Improving Full Scale THD Using Negative Supply
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
VSSOP (DGK) | 8 | Ultra Librarian |
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