ADR291ERZ Micropower Voltage References by Analog Devices

Micropower Voltage References
Status: Production
Series: ADR291
RoHS: Compliant
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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.

Where to Buy

Prices starting from US$12.25

Distributor Stock
Logo for Analog Devices
Analog Devices
from US$16.90
647
in stock
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Newark Electronics
from US$12.27
36
in stock
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element14
from US$13.47
36
in stock
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Farnell
from US$12.25
36
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Features

Supply Range
2.8 V to 15 V, ADR291
4.4 V to 15 V, ADR292
Supply Current 12 µA Max
Low-Noise 8 µV and 12 µVP-P (0.1 Hz to 10 Hz)
High Output Current 5 mA
Temperature Range -40ºC to +125ºC
Pin Compatible with REF02 / REF191

Alternative Descriptions

LOW NOISE MICROPWR PRECISION V | Analog Devices
Volt Ref, 2.5V, Nsoic, -40 To 125Deg C | Newark Electronics
VOLT REF, 2.5V, NSOIC, -40 TO 125DEG C | element14

Frequently Asked Questions

Where can I find additional details, specifications and documents for a ADR291ERZ?

Additional datasheets, footprints and schematics for ADR291ERZ are listed on our Part Details page. You can also find images and similar parts to ADR291ERZ on this page.

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What category does ADR291ERZ fall under?

The ADR291ERZ is listed under Micropower Voltage References.

Can I view similar or alternative parts?

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Is the ADR291ERZ RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

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