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Analog Devices Inc. AD22283-B-R2
- Part No.:
- AD22283-B-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Accelerometers
- Package:
- 8-CLCC
- Datasheet:
-
AD22283-B-R2.pdf
- Description:
- ACCELEROMETER 250G ANALOG 8CLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,886
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Product details
Overview
AD22283-B-R2 from Analog Devices is a single-axis, high-g iMEMS® accelerometer with ±250 g full-scale range, 400 Hz two-pole Bessel filter, and ratiometric voltage output. It measures dynamic vibration and static gravity in automotive airbag collision sensing systems, operating across −40°C to +125°C with 1.5 mA quiescent current.
For engineers reviewing the AD22283-B-R2 datasheet, AD22283-B-R2 pinout, AD22283-B-R2 application, or AD22283-B-R2 equivalent, key selection criteria include its self-test capability, low noise density (5–15 mg/√Hz), prefilter headroom (1400 g), and ceramic LCC package compatibility with Sn/Pb and Pb-free soldering.
Technical Context
The AD22283-B-R2 implements a fully differential surface micromachined sensor with electrostatic force feedback and zero-net-force operation, enabling high EMI/RFI immunity. Its on-chip timing generator drives complementary 400 kHz square waves to excite the differential capacitor array, with demodulated feedback converted to a single-ended analog output.
It integrates a 400 Hz two-pole Bessel filter to preserve transient fidelity while suppressing out-of-band noise, and features a ratiometric output referenced to VDD. The self-test function applies electrostatic force via the ST pin to fully exercise mechanical and electrical signal chain integrity without external stimuli.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Full-Scale Range | ±250 g - supports high-impact crash detection without saturation in front/side airbag deployment scenarios |
| Output Sensitivity | 7.6–8.4 mV/g (typ.) - ratiometric to VDD, enabling stable measurement under supply variation |
| Zero-g Offset | ±100 mV over temperature - enables accurate static acceleration (e.g., tilt) measurement after calibration |
| Noise Density | 5–15 mg/√Hz (10 Hz–400 Hz) - ensures resolution of sub-g vibration signals in noisy vehicle environments |
| −3 dB Bandwidth | 360–440 Hz - preserves crash pulse rise time while rejecting high-frequency engine/road noise |
| Prefilter Headroom | 1400 g - prevents internal saturation during extreme shock events before filtering |
| Supply Current | 1.5–2 mA at 5 V - enables low-power always-on monitoring in safety-critical automotive ECUs |
| Self-Test Output Δ | 200–300 mV at VDD = 5 V - provides unambiguous pass/fail verification of full signal path functionality |
Pinout & Package
AD22283-B-R2 is housed in an 8-terminal ceramic leadless chip carrier (LCC), 5 mm × 5 mm × 2 mm, qualified for automotive use and compatible with Pb-free reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 5 | NC | No connect - must remain unconnected per design; floating or tied pins risk parasitic coupling |
| 3 | COM | Common reference node - serves as analog ground return for XOUT and internal circuitry |
| 4 | ST | Self-test digital input - TTL-compatible (VIH ≥ 3.5 V, VIL ≤ 1 V); activates full mechanical/electrical test sequence |
| 6 | XOUT | Analog output - single-ended ratiometric voltage proportional to acceleration along sensitive axis |
| 7, 8 | VDD / VDD2 | Power supply inputs - dual VDD pins reduce IR drop and improve PSRR; both require local 0.1 μF decoupling |
Key Features
| Feature | Design Value |
|---|---|
| Fully differential sensor & signal path | Rejects common-mode EMI/RFI up to 400 kHz clock frequency, critical in electrically noisy automotive cabins |
| On-chip 400 Hz Bessel filter | Preserves step response fidelity (minimal overshoot/ringing) for accurate crash pulse timing in airbag algorithms |
| Comprehensive self-test | Validates sensor displacement, demodulation, amplification, and filtering in <1 ms with single ST pin assertion |
| Ratiometric output | Eliminates need for precision voltage reference; output scales linearly with VDD, simplifying power domain design |
| High prefilter headroom (1400 g) | Allows direct mounting near impact zones without clipping during severe crashes (e.g., 50 km/h barrier tests) |
| Automotive-qualified packaging | Ceramic LCC withstands thermal cycling, humidity, and mechanical shock per AEC-Q100 Grade 1 requirements |
Applications
| Frontal Airbag Deployment | Side-Impact Occupant Detection |
|---|---|
|
Use Scenario: Detect rapid deceleration during frontal collision to trigger airbag inflation within 20–30 ms. IC Role / Device Role / Timing Role: Primary crash sensor providing analog acceleration waveform to airbag control unit (ACU) for real-time algorithm processing. Use Value: ±250 g range and 400 Hz Bessel response ensure accurate capture of crash pulse shape and peak timing without aliasing or phase distortion. |
Use Scenario: Monitor lateral acceleration during side-impact or rollover events to determine occupant position and deploy curtain airbags. IC Role / Device Role / Timing Role: Single-axis lateral acceleration monitor mounted on B-pillar or door module, feeding ACU decision logic. Use Value: 1400 g prefilter headroom prevents saturation during high-g side impacts, preserving signal integrity for occupant classification algorithms. |
| Vehicle Vibration Monitoring | Industrial Shock Event Logging |
|
Use Scenario: Continuous monitoring of chassis vibration in commercial vehicles to detect suspension faults or road condition anomalies. IC Role / Device Role / Timing Role: Low-power, dc-coupled acceleration sensor feeding CAN bus telemetry system with time-stamped g-level data. Use Value: 1.5 mA supply current and −40°C to +125°C operation enable long-term embedded deployment in harsh under-hood environments. |
Use Scenario: Recording shock magnitude and duration during shipping or handling of sensitive equipment (e.g., medical devices, optics). IC Role / Device Role / Timing Role: Standalone event-triggered logger using AD22283-B-R2 output to initiate storage of acceleration transients above threshold. Use Value: Self-test capability allows field verification of sensor health prior to deployment, ensuring data reliability for warranty claims. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-g single-axis accelerometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD22282-A-R2 | ±120 g full-scale range; higher sensitivity (17.1–18.9 mV/g); lower prefilter headroom (800 g) | Better suited for lower-g crash events or precision vibration analysis where resolution > sensitivity is prioritized | Select AD22282-A-R2 when target acceleration events stay below 120 g and higher output voltage per g improves SNR |
| ADXL278 | Dual-axis, ±70 g range, SPI digital output, integrated FIFO, 200 Hz bandwidth, 350 μA supply current | Designed for compact space-constrained modules requiring multi-axis data and low-power wake-on-motion | Select ADXL278 when system requires digital interface, multi-axis correlation, or ultra-low power standby mode |
Compared with AD22283-B-R2, AD22282-A-R2 offers higher sensitivity but reduced overload margin, while ADXL278 trades analog simplicity and high-g capability for digital flexibility and lower power-neither is pin-compatible, and all require PCB layout changes.
Availability
AD22283-B-R2 is available at Aetrix Electronics and suitable for automotive safety systems, industrial shock monitoring, and embedded vibration diagnostics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD22283-B-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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and control.
The ADXL193 family-including AD22283-B-R2-is designed specifically for automotive airbag collision sensing, delivering robust, temperature-stable, self-testing acceleration measurement in demanding safety-critical environments.
FAQ
What is the full-scale acceleration range of the AD22283-B-R2?
The AD22283-B-R2 has a specified full-scale range of ±250 g. This range is guaranteed across the full operating temperature range of −40°C to +125°C and enables reliable detection of high-magnitude crash events without output saturation. The device maintains linearity within 0.2% of full scale, supporting accurate reconstruction of acceleration waveforms used in airbag deployment algorithms.
Does the AD22283-B-R2 support self-test, and how is it activated?
Yes, the AD22283-B-R2 includes a comprehensive self-test function activated by applying a logic-high signal (≥3.5 V) to the ST pin. This generates an electrostatic force that displaces the MEMS structure, producing a measurable 200–300 mV step change at XOUT. The test verifies the full signal chain-including sensor mechanics, demodulation, amplification, and filtering-within milliseconds and requires no external equipment.
What package type and dimensions does the AD22283-B-R2 use?
The AD22283-B-R2 uses an 8-terminal ceramic leadless chip carrier (LCC) package, designated E-8-1, measuring 5 mm × 5 mm × 2 mm. It features gold-plated terminations, is RoHS compliant, and qualified for automotive applications per AEC-Q100. The dual VDD pins (pins 7 and 8) are designed to minimize supply impedance and improve power supply rejection ratio.
How does the ratiometric output of the AD22283-B-R2 affect system design?
The AD22283-B-R2 output voltage is ratiometric to VDD, meaning its zero-g offset and sensitivity scale linearly with supply voltage. This eliminates the need for a separate precision voltage reference and simplifies analog-to-digital conversion when using the same VDD for both the AD22283-B-R2 and the ADC's reference input. Designers must ensure stable VDD regulation, as output accuracy directly tracks supply variations.
What is the purpose of the 400 Hz two-pole Bessel filter in the AD22283-B-R2?
The integrated 400 Hz two-pole Bessel filter in the AD22283-B-R2 optimizes transient response by minimizing group delay variation and overshoot-critical for preserving the shape and timing of crash pulses used in airbag deployment decisions. Unlike Butterworth or Chebyshev filters, the Bessel response ensures faithful reproduction of fast-rising acceleration edges without phase distortion or ringing artifacts.
AD22283-B-R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- iMEMS®
- Package/Case:
- 8-CLCC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Analog
- Axis:
- X
- Acceleration Range:
- ±250g
- Sensitivity (LSB/g):
- -
- Sensitivity (mV/g):
- 8
- Bandwidth:
- 400Hz
- Output Type:
- Analog Voltage
- Voltage - Supply:
- 4.75V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-CLCC (5x5)
AD22283-B-R2 FAQ
1.How can I place an order for AD22283-B-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD22283-B-R2 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AD22283-B-R2 reliable?
The price and inventory of AD22283-B-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD22283-B-R2 is usually 5 days.
3.What payment methods are accepted for AD22283-B-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD22283-B-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD22283-B-R2?
AD22283-B-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD22283-B-R2 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AD22283-B-R2?
For technical support, including AD22283-B-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD22283-B-R2 requirements.
6.How does Aetrix verify that AD22283-B-R2 is sourced from the original manufacturer or authorized distributors?
All AD22283-B-R2 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AD22283-B-R2 meets industry standards.
7.What is the process for return or replacement of AD22283-B-R2?
All AD22283-B-R2 units undergo pre-shipment inspection (PSI). If there is an issue with AD22283-B-R2, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AD22283-B-R2 part is unused and in its original packaging.
Return procedure for AD22283-B-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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