Analog Devices Inc. AD22282-A-R2

Overview

AD22282-A-R2 from Analog Devices is a single-axis, high-g iMEMS® accelerometer with ±120 g full-scale range, 400 Hz two-pole Bessel filter, and ratiometric voltage output. It delivers 17.1–18.9 mV/g sensitivity over temperature, 0.2% full-scale nonlinearity, and operates from 3.5 V to 6 V supply in automotive-grade −40°C to +125°C range. Used in front/side airbag collision sensing where dc-coupled, low-noise, self-test-capable acceleration measurement is required.

For engineers reviewing the AD22282-A-R2 datasheet, AD22282-A-R2 pinout, AD22282-A-R2 application, or AD22282-A-R2 equivalent, key selection criteria include its 400 Hz Bessel filter response, ±120 g range, ceramic LCC-8 package, self-test functionality, and automotive qualification-critical for safety-critical shock detection systems requiring traceable performance and mechanical robustness.

Technical Context

The AD22282-A-R2 implements a fully differential surface micromachined iMEMS® sensor with electrostatic force feedback, eliminating net electrostatic force on the movable frame and enabling high stability. Its 24 kHz resonant frequency lies well above the 400 Hz signal bandwidth, avoiding resonance-induced distortion in crash event capture.

It features a dedicated ST (self-test) digital input that applies calibrated electrostatic force to fully exercise mechanical and electrical elements, and uses ratiometric output scaling referenced to VDD-ensuring consistent sensitivity across supply variations within 4.75 V to 5.25 V nominal operation.

Key Specifications

Pinout & Package

AD22282-A-R2 is housed in an 8-terminal ceramic leadless chip carrier (LCC), 5 mm × 5 mm × 2 mm, RoHS-compliant and qualified for automotive use. The package provides environmental robustness and stable mechanical alignment (<1° package alignment error).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar single-axis high-g accelerometer applications.

Compared with AD22282-A-R2, AD22283-B-R2 offers extended range at lower sensitivity but identical form, fit, and function-making it a direct range-scaling alternative. ADXL278 trades analog simplicity and self-test accessibility for digital integration and multi-axis capability, requiring PCB redesign and firmware adaptation.

Availability

AD22282-A-R2 is available at Aetrix Electronics and suitable for automotive safety systems, industrial shock monitoring, and structural health diagnostics requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.

Supply support for AD22282-A-R2 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 ADXL193 family-including AD22282-A-R2-is part of ADI's iMEMS® accelerometer product line, engineered specifically for automotive airbag and safety-critical shock detection applications demanding dc response, self-test, and AEC-Q100 qualification.

FAQ

What is the full-scale acceleration range of the AD22282-A-R2?

The AD22282-A-R2 has a full-scale acceleration range of ±120 g. This range is specified and guaranteed across the full automotive temperature range of −40°C to +125°C, with nonlinearity held to 0.2% of full scale. It is optimized for front and side impact airbag applications where precise, unsaturated measurement of crash pulses is essential. The AD22282-A-R2 maintains this range under 5.0 V ±5% supply conditions.

Does the AD22282-A-R2 support self-test, and how is it activated?

Yes, the AD22282-A-R2 includes a comprehensive digital self-test feature activated via the ST pin (Pin 4). Applying a logic-high signal (≥3.5 V) to ST generates a calibrated electrostatic force that displaces the sensor mass, producing a 400–600 mV step change at XOUT. This verifies full mechanical and electrical functionality-including sensor, demodulator, amplifier, and filter stages-without external test equipment. The AD22282-A-R2 self-test is fully characterized and qualified for automotive use.

What package type and dimensions does the AD22282-A-R2 use?

The AD22282-A-R2 is packaged in an 8-terminal ceramic leadless chip carrier (LCC), designated E-8-1, measuring 5 mm × 5 mm × 2 mm. It features a bottom-soldered land pattern with no leads, RoHS-compliant plating, and is qualified to AEC-Q200 for automotive reliability. Pin 3 (COM) is the analog ground reference, and Pins 7 and 8 are both VDD supply inputs-requiring individual 0.1 μF ceramic decoupling capacitors to COM.

Is the AD22282-A-R2 qualified for automotive applications?

Yes, the AD22282-A-R2 is qualified for automotive applications per AEC-Q100 Grade 1 (−40°C to +125°C) and AEC-Q200 for its ceramic LCC package. Though not prefixed with "ADW", the AD22282-A-R2 shares identical specifications, testing, and qualification data with the ADW22282ZD automotive-grade variant per Analog Devices' ordering guide and Rev. B datasheet. It is approved for use in airbag control units and other safety-critical vehicle systems.

What is the output type and voltage swing specification for the AD22282-A-R2?

The AD22282-A-R2 provides a ratiometric single-ended analog voltage output on Pin 6 (XOUT), with a swing of 0.25 V to VDD − 0.25 V under ±400 μA load. At VDD = 5.0 V, this yields a usable range of 0.25 V to 4.75 V. Output voltage is linearly proportional to acceleration and scales directly with supply voltage-so a 5% VDD variation causes only a 5% full-scale shift, not offset or gain error. This behavior is confirmed in Table 1 of the AD22282-A-R2 datasheet.