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Analog Devices Inc. ADXL202JQC-REEL
- Part No.:
- ADXL202JQC-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Accelerometers
- Package:
- 14-CSOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADXL202JQC-REEL.pdf
- Description:
- DUAL-AXIS IMEMS ACCELEROMETER
- Quantity:
- Payment:
- Shipping:
Inventory:4,500
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Product details
Overview
ADXL202JQC-REEL from Analog Devices is a dual-axis iMEMS® capacitive accelerometer IC measuring ±2 g static and dynamic acceleration with digital duty-cycle output, 5 mg resolution at 60 Hz bandwidth, and 0.6 mA quiescent current - used in tilt sensing, inertial navigation, and battery-powered motion detection.
For engineers reviewing the ADXL202JQC-REEL datasheet, ADXL202JQC-REEL pinout, ADXL202JQC-REEL application, or ADXL202JQC-REEL equivalent, this page delivers verified technical context, validated pin functions, confirmed package mapping to 14-lead CERPAK, real-world application cards, and two rigorously validated alternative parts for ±2 g dual-axis motion sensing.
Technical Context
The ADXL202JQC-REEL integrates polysilicon surface-micromachined X/Y sensors with on-chip signal conditioning, phase-sensitive demodulation, and duty-cycle modulation (DCM) circuitry. Its open-loop architecture outputs T1/T2 ratio-based digital signals proportional to acceleration, eliminating need for external ADCs.
Bandwidth is set per axis via external capacitors CX/CY (0.01 µF to 0.47 µF), yielding 10 Hz–500 Hz analog filter response at XFILT/YFILT pins; DCM period T2 is user-adjustable from 0.5 ms to 10 ms using RSET resistor connected to Pin 5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Measurement Range | ±2 g per axis - enables precise tilt measurement across ±90° orientation with gravity as reference input. |
| Duty Cycle Sensitivity | 12.5 %/g nominal - allows direct microcontroller counter/timer decoding without A/D conversion. |
| Resolution | 5 mg at 60 Hz bandwidth - supports detection of sub-degree tilt changes in low-frequency motion systems. |
| Supply Voltage | +3.0 V to +5.25 V single supply - compatible with standard logic rails and battery-operated 3.3 V/5 V embedded systems. |
| Quiescent Current | 0.6 mA typical - enables multi-year operation in coin-cell-powered devices when combined with power cycling. |
| Shock Survival | 1000 g unpowered - ensures robustness during handling, drop events, and mechanical stress in portable equipment. |
| Operating Temperature | 0°C to +70°C - specified performance range for commercial-grade applications including peripherals and consumer electronics. |
Pinout & Package
The ADXL202JQC-REEL is housed in a hermetic 14-lead Surface Mount CERPAK package (QC-14), with thermal resistance θJA = 110°C/W and device weight of 5 grams.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 6, 8 | No Connect | Internally unused; must remain unconnected to avoid parasitic coupling or latch-up. |
| 2 | Test Point (VTP) | Factory test access only; no external connection permitted per datasheet caution. |
| 3 | Self-Test Input (ST) | Apply VDD to induce 800 mg electrostatic deflection; confirms sensor functionality without mechanical stimulus. |
| 4, 7 | Common Ground (COM) | Both pins must be tied together and grounded - forms return path for internal analog/digital circuits. |
| 5 | T2 Period Control (T2) | Connect RSET resistor to ground to set DCM cycle period (0.5–10 ms); determines timing resolution for duty-cycle decoding. |
| 9 | Y-Axis Duty Cycle Output (YOUT) | Digital PWM output with 50% baseline at 0 g; T1/T2 ratio encodes Y-axis acceleration directly readable by MCU timer. |
| 10 | X-Axis Duty Cycle Output (XOUT) | Digital PWM output with 50% baseline at 0 g; independent of YOUT but shares same T2 period setting. |
| 11 | Y-Axis Filter Output (YFILT) | Analog voltage output (312 mV/g typ.) requiring external op-amp buffer due to 32 kΩ source impedance. |
| 12 | X-Axis Filter Output (XFILT) | Analog voltage output (312 mV/g typ.) requiring external op-amp buffer due to 32 kΩ source impedance. |
| 13, 14 | Positive Supply (VDD) | Both pins must be shorted externally and connected to +3.0 V to +5.25 V supply; decoupling capacitor CDC = 0.1 µF required. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-axis integrated MEMS sensor + signal chain | Single-chip solution eliminates discrete sensor+ASIC integration effort and interconnect noise in tilt/inertial systems. |
| User-adjustable DCM period (T2) | Configurable 0.5–10 ms cycle time enables optimization of resolution vs. acquisition speed for specific MCU timer capabilities. |
| Per-axis bandwidth control via CX/CY | Independent 10 Hz–500 Hz analog filtering reduces aliasing and improves SNR without modifying firmware or hardware layout. |
| On-chip self-test (ST) | Electrostatic actuation verifies sensor integrity and signal path functionality in-system without external vibration sources. |
| Ratiometric analog outputs (XFILT/YFILT) | Output scales with VDD - simplifies calibration in variable-supply environments and enables supply-independent tilt computation. |
Applications
| 2-Axis Tilt Sensing | Computer Peripherals |
|---|---|
Use Scenario: Detecting orientation changes in handheld devices, industrial HMI panels, and digital levels. IC Role / Device Role / Timing Role: Measures static gravity vector components along X/Y axes to compute pitch and roll angles via ASIN(Ax/1g) and ASIN(Ay/1g). Use Value: 5 mg resolution enables <0.3° tilt accuracy at mid-range orientations, supporting precision leveling and gesture recognition. |
Use Scenario: Enabling motion-responsive features in mice, trackballs, and presentation remotes. IC Role / Device Role / Timing Role: Provides low-latency, low-power motion detection triggering wake-up or cursor movement without host CPU intervention. Use Value: 0.6 mA quiescent current and 1.6 ms turn-on time allow >1-year battery life in USB-rechargeable peripherals. |
| Inertial Navigation | Vehicle Security Systems |
Use Scenario: Dead-reckoning augmentation in GPS-denied environments for asset trackers and robotics. IC Role / Device Role / Timing Role: Delivers calibrated acceleration data for double-integration into position estimates; supports 500 Hz bandwidth for dynamic maneuver capture. Use Value: ±2 g range and <0.2% nonlinearity ensure minimal drift accumulation over short-term navigation intervals. |
Use Scenario: Detecting unauthorized vehicle movement, impact, or tampering in immobilizers and alarm systems. IC Role / Device Role / Timing Role: Triggers alert logic upon exceeding programmable acceleration thresholds; survives 1000 g shock events during installation or accidents. Use Value: Built-in self-test (ST) validates sensor readiness at system boot, preventing false negatives in critical security monitoring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-axis ±2 g accelerometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADXL320ARZ | Provides analog voltage outputs (±1 V full-scale) instead of duty-cycle; higher noise density (700 µg/√Hz vs. 500 µg/√Hz); requires external ADC. | Better suited for systems with available ADC resources and need for faster analog sampling; less ideal for ultra-low-power counter-based decoding. | Select ADXL320ARZ when analog interface simplifies signal chain and MCU lacks high-resolution timer peripherals. |
| MMA7260QT | Offers selectable ranges (1.5/2/4/6 g), lower supply current (500 µA), but no self-test function; analog outputs only; different pinout and package (16-pin QFN). | Preferred for cost-sensitive consumer designs needing flexible range selection and minimal footprint; not drop-in compatible. | Choose MMA7260QT for new designs prioritizing BOM cost and space, accepting trade-offs in diagnostic capability and digital interface simplicity. |
Compared with ADXL202JQC-REEL, ADXL320ARZ trades duty-cycle convenience for analog flexibility and slightly higher noise, while MMA7260QT reduces power and adds range options but removes self-test and digital output - making ADXL202JQC-REEL optimal for legacy-compatible, low-power, counter-driven tilt systems requiring built-in validation.
Availability
ADXL202JQC-REEL is available at Aetrix Electronics and suitable for 2-axis tilt sensing, inertial navigation, and vehicle security systems requiring stable component supply, long-lifecycle support, and traceable sourcing for industrial and automotive-adjacent applications.
Supply support for ADXL202JQC-REEL 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 semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision sensing, power management, and connectivity.
The ADXL202JQC-REEL belongs to Analog Devices' iMEMS® accelerometer product line, designed specifically for low-cost, low-power, dual-axis motion sensing in commercial-grade embedded systems where gravity-based orientation and vibration monitoring are critical.
FAQ
What is the operating temperature range for the ADXL202JQC-REEL?
The ADXL202JQC-REEL is specified for commercial operation from 0°C to +70°C, with guaranteed performance across this range per the JQC grade ordering option. It can survive storage from –65°C to +150°C and withstand unpowered shocks up to 1000 g, but full parameter compliance applies only within the 0°C to +70°C operating band.
How does the ADXL202JQC-REEL generate its duty-cycle output?
The ADXL202JQC-REEL uses internal phase-sensitive demodulation of capacitance changes from its polysilicon MEMS sensors, followed by a duty-cycle modulator (DCM) stage. Acceleration alters the T1 pulse width within a fixed T2 period set by RSET, producing a T1/T2 ratio where 0 g = 50% duty cycle and ±1 g = ±12.5% change - enabling direct MCU timer decoding without external ADCs.
Can the ADXL202JQC-REEL be used for analog output applications?
Yes - the ADXL202JQC-REEL provides buffered analog outputs at Pins XFILT and YFILT (312 mV/g typical sensitivity), though these pins have 32 kΩ output impedance and require an op-amp follower for driving loads. Alternatively, the duty-cycle outputs (XOUT/YOUT) can be RC-filtered to reconstruct analog voltage, offering ratiometric scaling with VDD but reduced bandwidth versus XFILT/YFILT.
What is the purpose of the ST pin on the ADXL202JQC-REEL?
The ST (Self-Test) pin on the ADXL202JQC-REEL activates an internal electrostatic force that deflects the MEMS beam, inducing a known ~800 mg acceleration response. When pulled to VDD, it causes a ~10% duty-cycle shift at XOUT/YOUT - allowing functional verification of sensor integrity, signal chain, and MCU timing capture without mechanical stimulus or external equipment.
Is the ADXL202JQC-REEL RoHS compliant and lead-free?
Yes - the ADXL202JQC-REEL is manufactured in a RoHS-compliant, lead-free process and packaged in a hermetic 14-lead CERPAK. Its Pb-free status is documented in Analog Devices' official product change notices and material declarations, meeting EU Directive 2011/65/EU requirements for hazardous substances restriction.
ADXL202JQC-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-CSOIC (0.295", 7.50mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Analog
- Axis:
- X, Y
- Acceleration Range:
- ±2g
- Sensitivity (LSB/g):
- -
- Sensitivity (mV/g):
- 312
- Bandwidth:
- 0.01Hz ~ 5kHz
- Output Type:
- Analog Voltage
- Voltage - Supply:
- 5.25V
- Features:
- Adjustable Bandwidth, Selectable Low Pass Filter
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-CERPAK
ADXL202JQC-REEL FAQ
1.How can I place an order for ADXL202JQC-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADXL202JQC-REEL 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 ADXL202JQC-REEL reliable?
The price and inventory of ADXL202JQC-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADXL202JQC-REEL is usually 5 days.
3.What payment methods are accepted for ADXL202JQC-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADXL202JQC-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADXL202JQC-REEL?
ADXL202JQC-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADXL202JQC-REEL 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 ADXL202JQC-REEL?
For technical support, including ADXL202JQC-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADXL202JQC-REEL requirements.
6.How does Aetrix verify that ADXL202JQC-REEL is sourced from the original manufacturer or authorized distributors?
All ADXL202JQC-REEL 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 ADXL202JQC-REEL meets industry standards.
7.What is the process for return or replacement of ADXL202JQC-REEL?
All ADXL202JQC-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADXL202JQC-REEL, 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 ADXL202JQC-REEL part is unused and in its original packaging.
Return procedure for ADXL202JQC-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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