ADR827BRMZ-R2

Overview

The ADR827BRMZ-R2 is a low-power precision integrated circuit combining a voltage reference and an operational amplifier in a 10-lead MSOP package. The reference section provides a fixed 1.25 V output with ±0.2% initial accuracy and a maximum temperature coefficient of 15 ppm/°C, operating from 2.7 V to 15 V. It features on-board resistors (R1, R2) rated at 10 kΩ with 0.5% matching. The op amp supports dual supplies of ±2.7 V to ±15 V or single supply operation from 2.7 V to 15 V. Key electrical parameters include a maximum input offset voltage of 500 μV, a gain-bandwidth product of 1.0 MHz, and a total supply current of less than 400 μA.

Feature Summary

• Integrates a precision voltage reference and a rail-to-rail operational amplifier within a single compact package for space-constrained designs.
• Includes internal matched resistors to facilitate easy configuration for generating multiple reference voltages without external components.
• Operates over an extended industrial temperature range of -40°C to +125°C with high stability and low power consumption.

Applications

• Battery-powered instrumentation
• Portable medical instrumentation
• Data acquisition systems
• Industrial process controls
• Automotive applications

Procurement Notes

Verify the specific suffix 'R2' indicates the 250-unit tube packaging format rather than tape and reel. Confirm that the B-grade designation corresponds to the tighter ±0.2% accuracy and 15 ppm/°C drift specifications required for the target application. Ensure the 10-lead MSOP footprint matches the PCB layout constraints.

Selection Notes

Select this component when a combined reference and amplifier solution is needed to minimize board space and component count. The B-grade offers superior accuracy compared to the A-grade. Consider the 1.25 V reference output level and the requirement for on-board resistors for gain setting. Verify that the supply voltage range meets the system's single or dual supply requirements.

Part Context

This device belongs to the ADR82x family of low-power precision references and op amps manufactured by Analog Devices. It shares the same functional architecture as the ADR821 but differs in the reference output voltage, providing 1.25 V instead of 2.5 V. The family is designed for applications requiring high precision and low power consumption in small packages.

Replacement Considerations

ADR821BRMZ-R2

FAQ

What is the function of pins 2 and 9?

Pins 2 (R1) and 9 (R2) connect to internal on-board resistors tied to the positive input of the amplifier, allowing for easy configuration of the op amp gain without external resistors.

Can the ADR827 operate with a single supply?

Yes, the device supports single-supply operation from 2.7 V to 15 V, in addition to dual-supply operation from ±2.7 V to ±15 V.