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Analog Devices Inc. ADXL1002BCPZ-RL7
- Part No.:
- ADXL1002BCPZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Accelerometers
- Package:
- 32-FQFN Exposed Pad, CSP
- Datasheet:
-
ADXL1002BCPZ-RL7.pdf
- Description:
- ACCELEROMETER 50G ANALOG 32LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,369
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Product details
Overview
ADXL1002BCPZ-RL7 from Analog Devices is a single-axis, high-frequency MEMS accelerometer with analog output, optimized for industrial condition monitoring. It delivers ±50 g full-scale range, 25 µg/√Hz noise density, and linear frequency response from DC to 11 kHz (3 dB), enabling precise vibration measurement in bearing health and rotating equipment diagnostics.
For engineers reviewing the ADXL1002BCPZ-RL7 datasheet, ADXL1002BCPZ-RL7 pinout, ADXL1002BCPZ-RL7 application, or ADXL1002BCPZ-RL7 equivalent, key selection criteria include its ratiometric 40 mV/g sensitivity, −40°C to +125°C operating range, 5 mm × 5 mm LFCSP package, and integrated self-test and overrange detection for embedded predictive maintenance systems.
Technical Context
The ADXL1002BCPZ-RL7 implements a polysilicon surface-micromachined proof mass suspended by springs, with differential capacitive sensing and phase-sensitive demodulation to generate an analog output proportional to acceleration. Its signal path includes a low-noise amplifier with ratiometric scaling to VDD and internal overrange detection circuitry that disables the 200 kHz clock during overload events.
It operates in two modes: continuous measurement mode (1.0 mA typical supply current) and standby mode (225 µA typical), with <50 µs recovery time. The output amplifier supports up to 70 kHz small-signal bandwidth but requires external band-limiting filtering-especially beyond 10 kHz-to suppress aliasing from internal clock coupling and sensor resonance effects at 21 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Full-Scale Range | ±50 g - defines maximum measurable acceleration before clipping or overrange flag assertion |
| Noise Density | 25 µg/√Hz - enables resolution of sub-millig-level vibration signals in high-bandwidth machinery monitoring |
| Frequency Response | DC to 11 kHz (3 dB) - supports analysis of gear mesh frequencies, bearing defect orders, and rotor harmonics |
| Sensitivity | 40 mV/g (ratiometric to VDD) - output scales linearly with supply voltage, simplifying ADC reference alignment |
| Resonant Frequency | 21 kHz - sets upper mechanical limit; operation near resonance requires amplitude-relative interpretation |
| Operating Temperature | −40°C to +125°C - ensures reliability in harsh environments like motor housings and turbine enclosures |
| Supply Current | 1.0 mA (typical, 5 V) - enables battery-powered wireless sensor nodes with multi-day runtime |
Pinout & Package
ADXL1002BCPZ-RL7 uses a 5 mm × 5 mm × 1.80 mm LFCSP package with exposed thermal pad (EPAD) requiring solder connection to PCB ground plane for thermal and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 12) | Power supply input | 3.0 V to 5.25 V single supply; powers all internal circuits and sets analog output scale factor |
| VSS (Pins 13, 14, 27, 28) | Ground reference | Return path for supply and signal; must be low-impedance and tied to EPAD |
| VOUT (Pin 30) | Analog output | Ratiometric voltage proportional to acceleration (0 g = VDD/2); drives ≤20 MΩ resistive or ≤100 pF capacitive loads directly |
| STANDBY (Pin 15) | Mode control input | Active-high logic input; places device in 225 µA standby with <50 µs wake-up to full measurement accuracy |
| ST (Pin 16) | Self-test activation | Active-high input triggering full electromechanical proof mass actuation for end-to-end system validation |
| OR (Pin 20) | Overrange indicator | Open-drain output asserting during >100 g events; not latched, pulses every ~500 µs during sustained overload |
| EPAD (Pin 33) | Thermal & electrical ground | Exposed copper pad on bottom; must be soldered to large PCB ground plane for thermal dissipation and noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow noise density | 25 µg/√Hz enables detection of subtle bearing wear signatures below 1 kHz without averaging |
| Integrated electrostatic self-test | Validates full signal chain - mechanical proof mass displacement, capacitive sensing, and analog amplification - in <300 µs |
| Ratiometric output scaling | 40 mV/g sensitivity and VDD/2 zero-g offset track supply variations, eliminating need for separate voltage references in ADC design |
| Overrange detection with clock gating | OR pin alerts on >100 g events while disabling internal 200 kHz clock for 200 µs to protect sensor integrity |
| High-temperature operation | Rated for −40°C to +125°C ambient, supporting direct mounting on motors, pumps, and compressors |
Applications
| Condition Monitoring | Predictive Maintenance |
|---|---|
Use Scenario: Continuous vibration monitoring of industrial gearboxes and electric motors during operation. IC Role / Device Role / Timing Role: Single-axis analog accelerometer capturing high-frequency spectral content (up to 11 kHz) for FFT-based fault signature extraction. Use Value: 25 µg/√Hz noise floor resolves early-stage bearing spalls and gear tooth cracks before audible symptoms appear. | Use Scenario: Wireless edge node deployed on rotating assets to trigger maintenance alerts based on vibration trend thresholds. IC Role / Device Role / Timing Role: Low-power analog sensor providing time-domain acceleration data for local RMS/Peak/crest factor computation and cloud upload. Use Value: 1.0 mA active current and <50 µs standby recovery enable energy-efficient duty-cycled sensing with minimal latency on event detection. |
| Asset Health Management | Test & Measurement Systems |
Use Scenario: Embedded monitoring in wind turbine pitch bearings to assess lubrication degradation and misalignment. IC Role / Device Role / Timing Role: High-temperature-stable transducer delivering calibrated analog output for real-time health scoring algorithms. Use Value: ±5% sensitivity stability over −40°C to +125°C eliminates recalibration drift across seasonal temperature swings. | Use Scenario: Calibration-grade benchtop vibration analyzer verifying shaker table performance and transducer linearity. IC Role / Device Role / Timing Role: Reference-grade MEMS accelerometer with ±0.1% full-scale linearity and <1% cross-axis coupling for traceable metrology. Use Value: 21 kHz resonant frequency and flat DC–11 kHz response support accurate transfer function characterization up to fifth-order harmonics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-frequency MEMS accelerometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADXL1001BCPZ-RL7 | ±100 g range, 30 µg/√Hz noise density, 20 mV/g sensitivity - higher dynamic range but lower resolution than ADXL1002BCPZ-RL7 | Better suited for high-shock environments (e.g., hydraulic pumps, impact testing) where peak g-levels exceed 50 g | Select ADXL1001BCPZ-RL7 when measuring transient impacts or wide-dynamic-range vibration with reduced SNR priority |
| PCB 352C33 | IEPE piezoelectric accelerometer, 10 mV/g sensitivity, 500 µg/√Hz noise, requires constant-current excitation and AC coupling | Used in lab-grade modal analysis and shock testing; incompatible with DC-coupled or low-power embedded systems | Choose PCB 352C33 only for high-fidelity benchtop measurements where size, power, and DC response are secondary to absolute amplitude accuracy |
Compared with ADXL1001BCPZ-RL7, the ADXL1002BCPZ-RL7 trades 50 g headroom for 17% lower noise and double sensitivity-critical for detecting incipient faults in low-amplitude, high-frequency regimes. Versus PCB 352C33, it offers true DC response, integrated electronics, and 100× lower power, but with lower absolute amplitude fidelity and no industry-standard IEPE interface.
Availability
ADXL1002BCPZ-RL7 is available at Aetrix Electronics and suitable for condition monitoring, predictive maintenance, and test & measurement applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ADXL1002BCPZ-RL7 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 and industrial applications.
The ADXL100x family is designed specifically for high-bandwidth, low-noise vibration sensing in industrial condition monitoring systems-emphasizing robustness, temperature stability, and embedded self-test capability.
FAQ
What is the full-scale range and sensitivity of the ADXL1002BCPZ-RL7?
The ADXL1002BCPZ-RL7 has a full-scale range of ±50 g and a nominal sensitivity of 40 mV/g at 5.0 V supply, ratiometric to VDD. This means output voltage changes by 40 mV per g of acceleration, with zero-g output centered at VDD/2. Sensitivity remains stable within ±5% across −40°C to +125°C, making ADXL1002BCPZ-RL7 suitable for unattended field deployments where temperature compensation is impractical.
How does the self-test function work on the ADXL1002BCPZ-RL7?
The ADXL1002BCPZ-RL7 integrates a full electromechanical self-test: applying a logic-high signal to the ST pin electrostatically actuates the proof mass, generating a known displacement equivalent to ~6.8 g acceleration (275 mV ΔVOUT at 5 V). This validates both mechanical integrity and analog signal chain functionality in <300 µs. The test can be triggered anytime during operation without interrupting measurement mode, and ADXL1002BCPZ-RL7 returns to normal output within 300 µs after ST deactivation.
What is the purpose of the OR (Overrange) pin on the ADXL1002BCPZ-RL7?
The OR pin on ADXL1002BCPZ-RL7 is an open-drain output that asserts during acceleration events exceeding ±100 g (2× full-scale). It is not latched and pulses every ~500 µs during sustained overload. Internally, the 200 kHz clock is disabled for 200 µs upon detection to protect the MEMS structure. This allows host systems to log overload events or initiate protective shutdowns without requiring continuous polling of VOUT, preserving ADXL1002BCPZ-RL7's low-power advantage.
Can the ADXL1002BCPZ-RL7 operate beyond its 11 kHz 3 dB bandwidth?
Yes, the ADXL1002BCPZ-RL7's output amplifier supports up to 70 kHz small-signal bandwidth, but operation beyond 11 kHz requires careful design. Near the 21 kHz mechanical resonance, sensitivity increases nonlinearly, and internal 200 kHz clock coupling introduces spurious tones. To use ADXL1002BCPZ-RL7 above 10 kHz, implement aggressive external low-pass filtering and sample ≥220 kHz to avoid aliasing-especially critical for spectral analysis of blade pass frequencies or combustion harmonics.
What PCB layout considerations are critical for optimal performance of the ADXL1002BCPZ-RL7?
Optimal ADXL1002BCPZ-RL7 performance requires mounting near a rigid PCB mounting point with multiple vias connecting the EPAD to a solid ground plane. Avoid placing the device on thin or large-area PCB sections prone to flexure. Use ≥1 µF local VDD decoupling, keep VOUT traces short and shielded, and add series resistance (≥8 kΩ) if driving >100 pF capacitive loads. Mechanical mounting-stud, adhesive, or magnetic-must match target frequency range: stud mounts are mandatory for >5 kHz to ensure full-bandwidth mechanical coupling to the asset.
ADXL1002BCPZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 32-FQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Analog
- Axis:
- X
- Acceleration Range:
- ±50g
- Sensitivity (LSB/g):
- -
- Sensitivity (mV/g):
- 40
- Bandwidth:
- 21kHz
- Output Type:
- Analog Voltage
- Voltage - Supply:
- 3.3V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-LFCSP (5x5)
ADXL1002BCPZ-RL7 FAQ
1.How can I place an order for ADXL1002BCPZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADXL1002BCPZ-RL7 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 ADXL1002BCPZ-RL7 reliable?
The price and inventory of ADXL1002BCPZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADXL1002BCPZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADXL1002BCPZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADXL1002BCPZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADXL1002BCPZ-RL7?
ADXL1002BCPZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADXL1002BCPZ-RL7 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 ADXL1002BCPZ-RL7?
For technical support, including ADXL1002BCPZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADXL1002BCPZ-RL7 requirements.
6.How does Aetrix verify that ADXL1002BCPZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADXL1002BCPZ-RL7 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 ADXL1002BCPZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADXL1002BCPZ-RL7?
All ADXL1002BCPZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADXL1002BCPZ-RL7, 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 ADXL1002BCPZ-RL7 part is unused and in its original packaging.
Return procedure for ADXL1002BCPZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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