REF6041
4.096-V, 5-ppm/°C high-precision voltage reference with integrated buffer & enable pin
REF6041
- 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 |
Technical article | Balancing ADC size, power, resolution and bandwidth in precision data-acquisition | PDF | HTML | 03 Dec 2021 | |
E-book | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 28 Jun 2019 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
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PSPICE-FOR-TI — PSpice® for TI design and simulation tool
TIDA-01576 — High accuracy analog input module reference design with 16-bit 1-MSPS dual simultaneous-sampling ADC
TIDA-01056 — 20-bit 1MSPS DAQ Reference Design Optimizing Power Supply Efficiency While Minimizing EMI
TIDA-01054 — Multi-Rail Power Reference Design for Eliminating EMI Effects in High Performance DAQ Systems
TIDA-01214 — Isolated, High-Accuracy Analog Input Module Reference Design Using 16-Bit ADC and Digital Isolator
TIDA-01055 — ADC Voltage Reference Buffer Optimization Reference Design for High Performance DAQ Systems
TIDA-01051 — Reference Design Optimizing FPGA Utilization and Data Throughput for Automatic Test Equipment
TIDA-01050 — Optimized Analog Front End DAQ System Reference Design for 18 bit SAR Data Converters
TIPD151 — 16-bit 400KSPS 4-Ch. Multiplexed Data Acquisition Ref Design for High Voltage Inputs, Low Distortion
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
VSSOP (DGK) | 8 | Ultra Librarian |
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