AD8418BRMZ-RL

Instrumentation, Op Amps, Buffer Amps Overview

The AD8418BRMZ-RL is a bidirectional, zero-drift current sense amplifier manufactured by Analog Devices Inc. It features an initial gain of 20 V/V and operates within a supply voltage range of 2.7 V to 5.5 V. The device supports high common-mode input voltages from −2 V to +70 V continuously, with survival up to +85 V. It offers a typical small-signal bandwidth of 250 kHz and includes integrated electromagnetic interference (EMI) filters. The component is housed in an 8-lead MSOP package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Zero drift architecture providing low offset voltage and minimal drift over temperature
• Integrated EMI filters for accurate performance under PWM common-mode inputs
• Bidirectional operation capability for measuring current in both directions
• High common-mode rejection ratio across the operating voltage range

Instrumentation, Op Amps, Buffer Amps Applications

• Motor controls
• Solenoid controls
• Power management
• Low-side current sensing
• Diagnostic protection

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix -RL indicates tape and reel packaging when sourcing. Confirm the BRMZ variant corresponds to the commercial grade specifications rather than the automotive W-series. Ensure compatibility with the 8-lead MSOP footprint during PCB layout. Cross-reference the manufacturer part number against official distributor catalogs to validate authenticity and revision status.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for applications requiring precise bidirectional current measurement without external calibration. The zero-drift core minimizes error accumulation over wide temperature ranges. Consider the 20 V/V fixed gain for direct interfacing with standard analog-to-digital converters. Evaluate the 250 kHz bandwidth against signal frequency requirements to ensure adequate response time for dynamic loads.

Instrumentation, Op Amps, Buffer Amps Part Context

This device belongs to the AD8418 family of high-voltage current sense amplifiers. It shares architectural similarities with other members like the AD8418WBRMZ but differs in qualification level. The BRMZ designation identifies the commercial grade version packaged in MSOP. Related parts include the AD8418AR and AD8418AW variants which offer different packaging or automotive qualifications.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

The AD8418BRMZ is functionally equivalent to the AD8418ARMZ. Designers should verify pinout compatibility and thermal characteristics when substituting between MSOP packages. Automotive applications require switching to the AD8418WBRMZ series.