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Product Detailed Parameters
- Description：LOW DROPOUT VOLTAGE REFERENCE
- Series：REF19
- Mfr：Analog Devices Inc.
- Package：Bulk
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：2.048V
- Voltage - Output (Max)：-
- Current - Output：30 mA
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The REF191FS is a precision micropower voltage reference from the Analog Devices REF19x series, housed in an 8-lead SOIC package. It delivers high stability with an initial accuracy of 2 mV maximum and a temperature coefficient of 5 ppm/°C maximum. The device operates with a low supply current of 45 µA maximum and features a low dropout voltage. It supports a load regulation of 4 ppm/mA and line regulation of 4 ppm/V, providing a high output current capability of 30 mA along with short circuit protection.
Feature Summary
- Precision micropower operation with low dropout voltage characteristics
- High initial accuracy and low temperature coefficient for stable reference performance
- Integrated short circuit protection and high output current drive capability
Applications
- Portable instrumentation systems
- Analog-to-digital and digital-to-analog converter interfaces
- Smart sensor applications
- Solar powered devices
- Loop current powered instrumentations
Procurement Notes
Verify the specific suffix FS against official datasheets to confirm the 8-lead narrow-body SOIC package configuration. Ensure compatibility with required operating temperatures and electrical specifications before procurement. Confirm availability status as distribution data may vary.
Selection Notes
Select this component when precise voltage referencing is required in space-constrained designs. The SOIC package offers a compact footprint suitable for surface mount applications. Evaluate the 45 µA supply current against system power budgets and verify that the 30 mA output current meets load requirements.
Part Context
The REF191FS belongs to the REF19x series of precision voltage references manufactured by Analog Devices. This series is designed for applications requiring high accuracy and low power consumption. The device utilizes advanced bandgap technology to achieve stable performance across varying environmental conditions.
Replacement Considerations
Consult official substitution guides for compatible alternatives within the REF19x family or equivalent precision references from other manufacturers. Verify pinout compatibility and electrical parameter alignment before replacing.
