ADR291
PRODUCTIONLow Noise Micropower Precision Voltage Reference (2.5 V)
- Part Models
- 13
- 1ku List Price
- Starting From $3.36
Part Details
The ADR291 and ADR292 are low noise, micropower precision voltage references that use an XFET® reference circuit. The new XFET architecture offers significant performance improvements over traditional band gap and buried Zener-based references. Improvements include one quarter the voltage noise output of band gap references operating at the same current, very low and ultralinear temperature drift, low thermal hysteresis, and excellent long-term stability.
The ADR291/ADR292 family is a series of voltage references providing stable and accurate output voltages from supplies as low as 2.8 V for the ADR291. Output voltage options are 2.5 V and 4.096 V for the ADR291 and ADR292, respectively.
Quiescent current is only 12 μA, making these devices ideal for battery-powered instrumentation. Three electrical grades are available offering initial output accuracies of ±2 mV, ±3 mV, and ±6 mV maximum for the ADR291, and ±3 mV, ±4 mV, and ±6 mV maximum for the ADR292. Temperature coefficients for the three grades are 8 ppm/°C, 15 ppm/°C, and 25 ppm/°C maximum, respectively. Line regulation and load regulation are typically 30 ppm/V and 30 ppm/mA, maintaining the reference’s overall high performance. For a device with 5.0 V output, refer to the ADR293 data sheet.
The ADR291 and ADR292 references are specified over the extended industrial temperature range of −40°C to +125°C. Devices are available in the 8-lead SOIC, 8-lead TSSOP, and 3-lead TO-92 packages.
APPLICATIONS
- Portable instrumentation
- Precision reference for 3 V and 5 V systems
- Analog-to-digital and digital-to-analog converter reference
- Solar-powered applications
- Loop-current-powered instruments
Documentation
Data Sheet 2
Frequently Asked Question 1
Circuit Note 1
Analog Dialogue 3
Rarely Asked Question Page 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| ADR291ERZ | 8-Lead SOIC | ||
| ADR291ERZ-REEL7 | 8-Lead SOIC | ||
| ADR291FRZ | 8-Lead SOIC | ||
| ADR291FRZ-REEL | 8-Lead SOIC | ||
| ADR291FRZ-REEL7 | 8-Lead SOIC | ||
| ADR291GRUZ | 8-Lead TSSOP | ||
| ADR291GRUZ-REEL7 | 8-Lead TSSOP | ||
| ADR291GRZ | 8-Lead SOIC | ||
| ADR291GRZ-REEL | 8-Lead SOIC | ||
| ADR291GRZ-REEL7 | 8-Lead SOIC | ||
| ADR291GT9Z | 3-Lead TO-92 | ||
| ADR291WFRZ-R7 | 8-Lead SOIC | ||
| ADR291WFRZ-RL | 8-Lead SOIC |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jul 20, 2012 - 12_0105 Halogen Free Material Change for Select SOIC Narrow and Wide Body Products Assembled at Amkor |
||
| ADR291ERZ | PRODUCTION | |
| ADR291ERZ-REEL7 | PRODUCTION | |
| ADR291FRZ | PRODUCTION | |
| ADR291FRZ-REEL | PRODUCTION | |
| ADR291FRZ-REEL7 | PRODUCTION | |
| ADR291GRZ | PRODUCTION | |
| ADR291GRZ-REEL | PRODUCTION | |
| ADR291GRZ-REEL7 | PRODUCTION | |
| ADR291WFRZ-R7 | PRODUCTION | |
| ADR291WFRZ-RL | PRODUCTION | |
|
Aug 10, 2021 - 21_0035 Amkor Philippines as an Alternate Site for TSSOP_4.4 |
||
| ADR291GRUZ | PRODUCTION | |
| ADR291GRUZ-REEL7 | PRODUCTION | |
|
Nov 9, 2011 - 11_0182 Test Site Transfer from Analog Devices Philippines Inc in Paranaque to Analog Devices General Trias in Cavite, Philippines |
||
| ADR291GRUZ | PRODUCTION | |
| ADR291GRUZ-REEL7 | PRODUCTION | |
| ADR291GT9Z | PRODUCTION | |
|
Feb 11, 2011 - 10_0005 Halogen Free Material Change for TSSOP Products Assembled at Amkor |
||
| ADR291GRUZ | PRODUCTION | |
| ADR291GRUZ-REEL7 | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
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