ADR821BRMZ-REEL7

Overview

The ADR821BRMZ-REEL7 is a precision voltage reference and operational amplifier integrated in a 10-lead MSOP package. It provides a fixed 2.5 V output with ±0.2% initial accuracy and a maximum temperature coefficient of 15 ppm/°C. The device operates on supply voltages ranging from 2.8 V to 15 V, drawing a total supply current of less than 400 μA. The internal op amp features rail-to-rail input and output capabilities, a maximum offset voltage of 500 μV, and unity gain stability without phase reversal.

Feature Summary

• Integrates a high-precision 2.5 V voltage reference and a rail-to-rail operational amplifier within a single compact package.
• Features low power consumption with a combined operating current of less than 400 μA for battery-powered applications.
• Includes onboard precision resistors to facilitate flexible circuit configurations such as dual-supply generation or signal buffering.
• Operates reliably across an extended industrial temperature range from −40°C to +125°C.

Applications

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

Procurement Notes

Verify the specific suffix REEL7 indicates reel packaging when sourcing components. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the ordering part number matches the required B grade specifications for accuracy and drift performance. Cross-reference pinout details with the latest datasheet revision to guarantee correct footprint compatibility during PCB design.

Selection Notes

Select this component when a combined reference and amplifier solution is required to minimize board space and component count. The B grade offers tighter accuracy and drift specifications compared to the A grade variant. Consider the 10-lead MSOP package dimensions for layout constraints. Evaluate the 400 μA supply current against strict power budget requirements for portable devices.

Part Context

This part belongs to the ADR82x family, which combines precision references with amplifiers. The ADR821 variant specifically provides a 2.5 V output, whereas the ADR827 provides 1.25 V. Both share similar architectural features but differ in output voltage and minimum operating supply requirements. The BRMZ designation identifies the specific accuracy grade and package type within this product line.

Replacement Considerations

ADR821ARMZ-REEL7

FAQ

Can the internal amplifier be used independently of the voltage reference?

Yes, the functional block diagram indicates that the reference and the op amp can be operated independently, offering flexibility in circuit arrangement.

What is the maximum input offset voltage for the amplifier section?

The maximum input offset voltage is specified as 500 μV over the full temperature range of −40°C to +125°C.