REF198GRU-REEL7

Overview

The REF198GRU-REEL7 is a precision micropower voltage reference from the Analog Devices REF19x series, providing a nominal output of 4.096 V. It features a maximum temperature coefficient of 5 ppm/°C and an initial accuracy of ±2 mV. The device operates with a supply current of 45 μA maximum and supports up to 30 mA load current. It includes a sleep mode reducing current to 15 μa, low dropout voltage capability, and short-circuit protection.

Feature Summary

• Patented temperature drift curvature correction circuit for high stability
• Integrated sleep mode controlled by TTL or CMOS logic levels
• Low dropout voltage design for operation near supply limits
• Built-in short-circuit protection for robust performance

Applications

• Portable instruments
• ADCs and DACs
• Smart sensors
• Solar powered applications
• Loop-current-powered instruments

Procurement Notes

Verify the specific electrical grade (E, F, or G) required for your application, as specifications like line regulation and temperature coefficient vary between grades. Confirm that the RU suffix indicates the TSSOP package variant. Ensure the REEL7 designation matches your automated assembly requirements. Check for any recent Product Change Notifications regarding manufacturing updates.

Selection Notes

Select this component when a stable 4.096 V reference is needed in a compact surface-mount package. Consider the REF19x series for its micropower consumption suitable for battery-operated devices. Evaluate the specific grade requirements against your system's accuracy needs, as higher grades offer tighter tolerances. Verify compatibility with your available supply voltage headroom given the low dropout characteristic.

Part Context

This part belongs to the REF19x family of precision band gap voltage references manufactured by Analog Devices. The series utilizes laser trimming of thin-film resistors to achieve low temperature coefficients. Other variants in the family include different fixed output voltages such as 2.048 V, 2.5 V, and 5.0 V, sharing similar architectural features and power characteristics.

Replacement Considerations

Direct replacements within the same family include other REF19x parts with different output voltages if the voltage level can be adjusted or if a different reference value is acceptable. Cross-referencing should focus on packages like SOIC or TSSOP-8 and similar pinouts. Verify that alternative components meet the specific sleep mode and current consumption requirements.