Analog Devices Inc. AD8217BRMZ

Overview

AD8217BRMZ from Analog Devices is a high-voltage, zero-drift current shunt monitor with 20 V/V fixed gain, ±100 nV/°C typical offset drift, and 4.5 V to 80 V common-mode input range. It performs unidirectional high-side current sensing across shunt resistors in telecom power systems, motor control, and base station amplifiers.

For engineers reviewing the AD8217BRMZ datasheet, AD8217BRMZ pinout, AD8217BRMZ application, or AD8217BRMZ equivalent, key selection criteria include its integrated LDO enabling single-rail operation, buffered rail-to-rail output (0.01 V to 5 V), ±300 μV max offset over temperature, and MSOP-8 package compatibility with high-density industrial PCB layouts.

Technical Context

The AD8217BRMZ implements a precision difference amplifier core with matched 1.5 MΩ/75 kΩ resistor network yielding exact 20 V/V gain and <±0.35% total error over −40°C to +125°C. Its zero-drift architecture maintains linearity across 0 mV–250 mV differential inputs regardless of common-mode voltage.

An internal LDO derives power directly from the +IN pin (4.5 V–80 V), eliminating external supplies. Output clamping limits maximum voltage to 5.6 V, protecting downstream ADCs while maintaining 2 Ω output impedance and 500 kHz small-signal bandwidth.

Key Specifications

Pinout & Package

AD8217BRMZ is housed in an 8-lead MSOP (RM-8) package per JEDEC MO-187-AA, with 0.65 mm pitch and 3.0 mm × 3.0 mm body size. Pin 1 is marked with a dot; pins 2, 3, 6, and 7 are no-connect.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar current shunt monitor applications.

Compared with INA240A1QDRQ1 and MAX4080TASA+, the AD8217BRMZ delivers superior offset stability (±100 nV/°C vs. ±250 nV/°C) and eliminates external supply dependencies via its integrated LDO-critical for space-constrained telecom and industrial power modules.

Availability

AD8217BRMZ is available at Aetrix Electronics and suitable for 48 V telecom power monitoring, unidirectional motor control, and base station power amplifier bias applications requiring stable component supply across extended temperature ranges.

Supply support for AD8217BRMZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.

The AD8217BRMZ belongs to Analog Devices' precision current sensing amplifier product line, engineered specifically for high-voltage, high-accuracy unidirectional current measurement in industrial power systems and communications infrastructure.

FAQ

What is the maximum common-mode voltage the AD8217BRMZ can withstand continuously?

The AD8217BRMZ supports a continuous common-mode input voltage range of 4.5 V to 80 V. It also survives transient voltages up to 85 V (0 V to 85 V) on +IN and −IN pins relative to GND, making it suitable for 48 V telecom and industrial power rails where surges may occur. This rating is validated per Absolute Maximum Ratings Table 2 in the official AD8217 Rev. A datasheet.

Does the AD8217BRMZ require an external power supply?

No, the AD8217BRMZ does not require an external power supply. Its integrated LDO is powered directly from the +IN pin, which accepts 4.5 V to 80 V. As long as the common-mode voltage meets this range, the device operates autonomously-eliminating the need for isolated or auxiliary supplies in high-side sensing topologies.

What is the output voltage range of the AD8217BRMZ and how does it interface with ADCs?

The AD8217BRMZ delivers a buffered output from 0.01 V to 5 V (typical) with 2 Ω output impedance. Its maximum clamped output is 5.6 V, ensuring safe interfacing with standard 5 V-input SAR or sigma-delta ADCs without external attenuation. The AD8217BRMZ output remains linear across the full differential input range (0–250 mV), enabling direct connection to most microcontroller ADCs.

Can the AD8217BRMZ measure bidirectional current?

No, the AD8217BRMZ is designed exclusively for unidirectional current measurement. Its architecture and output swing (0.01 V to 5 V) do not support negative differential inputs or bipolar output signaling. For bidirectional sensing, consider alternatives like the INA240 series. The AD8217BRMZ datasheet explicitly states "performs unidirectional current measurements" in the General Description section.

What package type and pin count does the AD8217BRMZ use?

The AD8217BRMZ uses an 8-lead Mini Small Outline Package (MSOP) compliant with JEDEC MO-187-AA, designated RM-8. It has four functional pins (+IN, −IN, GND, OUT) and four no-connect pins (2, 3, 6, 7). The package measures 3.0 mm × 3.0 mm with 0.65 mm lead pitch, optimized for high-density PCB layouts in telecom and industrial equipment.