Analog Devices Inc. AD8215YRZ-R7

Overview

AD8215YRZ-R7 from Analog Devices is a high-voltage, unidirectional current shunt monitor with fixed 20 V/V gain, ±0.3% total gain error over −40°C to +125°C, −2 V to +65 V common-mode input range, and buffered rail-to-rail output compatible with 5 V ADCs. It enables precision high-side current sensing in automotive motor controls and battery management systems.

For engineers reviewing the AD8215YRZ-R7 datasheet, AD8215YRZ-R7 pinout, AD8215YRZ-R7 application, or AD8215YRZ-R7 equivalent, key selection criteria include its survival rating up to +68 V common-mode voltage, 450 kHz small-signal bandwidth, 120 dB dc CMRR, 6 µV/°C typical offset drift, and SOIC_N-8 package compatibility with industrial and AEC-Q100–qualified designs.

Technical Context

The AD8215YRZ-R7 employs a proprietary input stage architecture that maintains linearity across 0 mV to 250 mV differential input voltage regardless of common-mode voltage (−2 V to +65 V), enabling accurate measurement during PWM switching transients. Its internal precision-trimmed resistors deliver 20 V/V gain with 0.01% matching and −8 ppm/°C typical gain drift.

It features a buffered output stage capable of sourcing/sinking ≥4 mA at full temperature range, operates from a single 4.5 V to 5.5 V supply, and achieves 75 dB PSRR - all while rejecting ground noise and maintaining 90 dB CMRR even at 40 kHz when VCM < 5 V.

Key Specifications

Pinout & Package

AD8215YRZ-R7 is housed in an 8-lead SOIC_N (narrow-body) package per JEDEC MS-012-AA, with 1.27 mm lead pitch and 5.00 mm × 4.00 mm body dimensions. Pin 1 is marked by a beveled corner or dot.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4080TASA+ and INA240A1DR, AD8215YRZ-R7 offers superior thermal stability (6 µV/°C vs. 5–10 µV/°C), guaranteed automotive-grade performance envelope, and lower supply current - making it preferred for engine control, transmission, and suspension modules requiring long-term accuracy at +125°C.

Availability

AD8215YRZ-R7 is available at Aetrix Electronics and suitable for automotive motor controls, engine management systems, and industrial DC-DC converter current monitoring requiring stable component supply across extended temperature and high-common-mode voltage conditions.

Supply support for AD8215YRZ-R7 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.

The AD8215YRZ-R7 belongs to Analog Devices' precision current sense amplifier product line, engineered specifically for high-voltage, high-accuracy unidirectional current measurement in automotive and industrial power systems.

FAQ

What is the maximum common-mode voltage the AD8215YRZ-R7 can survive continuously?

The AD8215YRZ-R7 has a continuous input voltage survival rating of −3 V to +68 V, meaning it can withstand transient overvoltages up to +68 V without damage. This exceeds its operational common-mode range of −2 V to +65 V and is critical for automotive load-dump immunity and inductive flyback protection in motor control circuits. The AD8215YRZ-R7 maintains functionality throughout its specified operating range.

Does the AD8215YRZ-R7 support bidirectional current sensing?

No, the AD8215YRZ-R7 is designed exclusively for unidirectional current measurement. Its internal architecture and output polarity are optimized for positive differential input voltages (0 mV to 250 mV), producing a proportional 0 V to 5 V output. For bidirectional sensing, Analog Devices recommends alternatives such as the AD8210 or AD8418, which provide symmetric output swing around mid-supply. The AD8215YRZ-R7 does not generate negative output voltages or support reverse current detection.

What is the minimum differential input voltage required for guaranteed linearity in the AD8215YRZ-R7?

The AD8215YRZ-R7 guarantees linearity down to a differential input voltage of 2 mV, producing a corresponding 40 mV output (2 mV × 20). Below this level, output accuracy degrades due to amplifier headroom limitations; the datasheet specifies a minimum output voltage of 100 mV for full specification compliance. This 2 mV threshold enables reliable detection of low-load currents in solenoid drivers and idle-state battery monitoring using the AD8215YRZ-R7.

Can the AD8215YRZ-R7 operate from a 3.3 V supply?

No, the AD8215YRZ-R7 requires a minimum supply voltage of 4.5 V and is specified only for 4.5 V to 5.5 V operation. At 3.3 V, the output stage cannot achieve its specified 0.10 V to 4.90 V swing, and internal biasing fails - resulting in undefined behavior or complete loss of function. Systems using 3.3 V logic must employ a dedicated 5 V rail or select a 3.3 V–compatible current sense amplifier such as the AD8217. The AD8215YRZ-R7 is not rated for sub-4.5 V operation.

How does the AD8215YRZ-R7 handle input common-mode voltage below the supply rail?

The AD8215YRZ-R7 operates correctly with input common-mode voltage as low as −2 V, even when V+ = 5 V - a capability enabled by its proprietary input stage design. When VCM drops below 5 V, supply current increases per IS = −0.275(VCM) + 2.5 mA, reaching ~2.2 mA at VCM = −2 V. This feature allows robust operation during PWM dead-time and low-side switch transitions, where VCM may dip near ground or go slightly negative. The AD8215YRZ-R7 maintains specified gain and CMRR throughout this range.