Analog Devices Inc. ADW22037Z-RL

Overview

ADW22037Z-RL from Analog Devices is a precision dual-axis iMEMS® accelerometer with ±18 g full-scale range, 100 mV/g sensitivity (ratiometric), and 110 µg/√Hz noise density. It delivers high zero-g bias stability (±125 mg initial deviation) and operates across −40°C to +125°C for automotive chassis control and tilt-sensing applications.

For engineers reviewing the ADW22037Z-RL datasheet, ADW22037Z-RL pinout, ADW22037Z-RL application, or ADW22037Z-RL equivalent, this page provides verified technical context, bandwidth-adjustable analog output behavior, ceramic LCC package mapping, and validated alternatives for dual-axis inertial sensing in harsh environments.

Technical Context

The ADW22037Z-RL implements a surface-micromachined polysilicon sensor with differential capacitive detection and phase-sensitive demodulation, delivering ratiometric voltage outputs proportional to acceleration on X and Y axes. Its open-loop architecture enables static (gravity) and dynamic (vibration) measurement without quantization error or nonmonotonicity.

Bandwidth is user-configurable via external capacitors CX and CY (0.002–10 µF), yielding 0.5 Hz–2.5 kHz response; internal 32 kΩ filter resistors set cutoff per f_−3dB = 1/(2π × 32 kΩ × C). Self-test activation at ST pin induces ~80 mV output shift (at VS = 5 V), verifying beam mobility and signal chain integrity.

Key Specifications

Pinout & Package

ADW22037Z-RL uses an 8-terminal ceramic LCC package (5 mm × 5 mm × 2 mm) with lead-free and Sn/Pb-compatible soldering profile support.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-axis inertial sensing applications.

Compared with ADW22037Z-RL, ADXL203CE sacrifices automotive qualification and extended temperature range for lower unit cost, while ADXL322 trades noise performance and full-scale range for higher bandwidth-making ADW22037Z-RL uniquely suited for high-accuracy, high-reliability dual-axis tilt and dynamic control in harsh environments.

Availability

ADW22037Z-RL is available at Aetrix Electronics and suitable for vehicle dynamic controls, platform stabilization/leveling, and vibration monitoring requiring stable component supply across automotive production lifecycles.

Supply support for ADW22037Z-RL 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, serving industrial, automotive, communications, and healthcare markets since 1965.

ADW22037Z-RL belongs to the iMEMS® accelerometer product line, engineered for precision inertial measurement in safety-critical automotive and industrial systems demanding long-term bias stability and wide operating temperature range.

FAQ

What is the full-scale range and sensitivity of ADW22037Z-RL?

ADW22037Z-RL has a ±18 g full-scale range and a ratiometric sensitivity of 94–106 mV/g at VS = 5 V. This means its output voltage scales linearly with supply voltage-e.g., at 3 V, sensitivity drops to ~56 mV/g. The device maintains specified performance across its entire −40°C to +125°C operating range, making ADW22037Z-RL suitable for high-g automotive crash sensing and precision tilt applications.

How does the self-test function work on ADW22037Z-RL?

The ST pin on ADW22037Z-RL activates an electrostatic self-test force on the MEMS beam when driven to VS (≥4 V). This produces a nominal 80 mV output shift at XOUT/YOUT (at VS = 5 V), confirming sensor mobility and signal chain integrity. The ST pin may be left open or tied to COM during normal operation. ADW22037Z-RL's self-test response varies cubically with VS, so verification must be performed at the intended supply voltage.

Can ADW22037Z-RL operate from a 3.3 V supply?

Yes, ADW22037Z-RL operates from 3 V to 6 V. At 3.3 V, its sensitivity is ~62 mV/g (ratiometric), zero-g bias is ~1.65 V, and typical supply current drops to ~480 µA. Noise density increases to ~175 µg/√Hz due to reduced signal swing, but resolution remains sufficient for tilt sensing above 1 Hz bandwidth. ADW22037Z-RL maintains full specification compliance-including AEC-Q100 qualification-at 3.3 V.

What external components are required for basic operation of ADW22037Z-RL?

ADW22037Z-RL requires only three external components for functional operation: a 0.1 µF decoupling capacitor (CDC) between VS and COM, and two bandwidth-setting capacitors (CX and CY) at XOUT and YOUT. CX/CY values determine analog bandwidth per f_−3dB = 1/(2π × 32 kΩ × C); a 0.1 µF capacitor yields ~50 Hz bandwidth. No additional op-amps or ADCs are needed-the ADW22037Z-RL delivers fully conditioned analog outputs.

Is ADW22037Z-RL pin-compatible with other ADXL203 variants?

Yes, ADW22037Z-RL shares identical 8-pin ceramic LCC footprint and pinout with ADXL203CE and ADXL203CR, including ST, COM, YOUT, XOUT, and VS assignments. All variants use the same functional block diagram and interface requirements. However, ADW22037Z-RL is specifically screened and qualified for automotive use (AEC-Q100 Grade 2), whereas ADXL203CE is commercial-grade-so mechanical compatibility does not imply qualification equivalence.