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ADR291WFRZ-R7
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Product Detailed Parameters
- Description：IC VREF SERIES 0.33% 8SOIC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：-
- Current - Output：5 mA
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：Automotive
- Qualification：-
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Overview
The ADR291WFRZ-R7 is a low noise, micropower precision voltage reference providing a stable 2.5 V output. It utilizes XFET architecture for superior performance over traditional band gap and buried Zener references. The device operates from a supply range of 2.8 V to 15 V with a maximum supply current of 15 μA. It features an output accuracy of ±0.12% and a maximum temperature coefficient of 15 ppm/°C. The unit is housed in an 8-lead SOIC package and is qualified for automotive applications.
Feature Summary
- XFET architecture delivers significantly lower voltage noise and ultralinear temperature drift compared to standard band gap or buried Zener references.
- Qualified for automotive applications with extended operating temperature coverage.
- High output current capability allows driving loads directly without external buffering.
Applications
- Automotive Li-Ion battery measurement systems
- Reference source for analog-to-digital converters
- Reference source for digital-to-analog converters
Procurement Notes
Verify the specific suffix R7 indicates reel packaging when sourcing. Confirm RoHS compliance status via the manufacturer's ordering guide. Ensure the automotive qualification requirement matches the project specifications before finalizing procurement.
Selection Notes
Select this component for designs requiring high precision with minimal power consumption. The 2.5 V output suits single-supply ADC/DAC interfaces. Verify input voltage remains above 2.8 V to maintain regulation. Consider the 8-lead SOIC footprint for PCB layout constraints.
Part Context
This part belongs to the ADR291 series of precision voltage references manufactured by Analog Devices. The series includes variants with different output voltages and accuracies. The W grade denotes the specific temperature coefficient and accuracy class for this model.
Replacement Considerations
The datasheet notes pin compatibility with REF02 and REF19x devices. Verify electrical parameters match requirements when substituting these legacy parts.
