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Analog Devices Inc. ADXL320JCP-REEL7
- Part No.:
- ADXL320JCP-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Accelerometers
- Package:
- 16-LQFN Exposed Pad, CSP
- Datasheet:
-
ADXL320JCP-REEL7.pdf
- Description:
- IC ACCELEROMETER DUAL 16LFCSP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ADXL320JCP-REEL7 from Analog Devices is a dual-axis ±5 g iMEMS® accelerometer in a 4 mm × 4 mm × 1.45 mm LFCSP package, delivering ratiometric analog voltage outputs for X/Y axes with 250 μg/√Hz noise density and 2 mg resolution at 60 Hz bandwidth. It operates from 2.4 V to 5.25 V, draws 350 μA at 2.4 V, and supports tilt sensing, motion detection, and vibration monitoring in space-constrained consumer electronics.
For engineers reviewing the ADXL320JCP-REEL7 datasheet, ADXL320JCP-REEL7 pinout, ADXL320JCP-REEL7 application, or ADXL320JCP-REEL7 equivalent, key selection criteria include its dual-axis analog output architecture, user-configurable bandwidth via external capacitors CX/CY, self-test functionality (ST pin), ratiometric zero-g bias (VS/2), and guaranteed −20°C to +70°C operating range.
Technical Context
The ADXL320JCP-REEL7 integrates a polysilicon surface-micromachined sensor with on-chip signal conditioning, implementing an open-loop architecture where acceleration deflects a suspended mass, unbalancing a differential capacitor driven by 180° out-of-phase square waves. Phase-sensitive demodulation rectifies the resulting amplitude-modulated signal into a DC-coupled analog voltage proportional to acceleration.
Bandwidth is set externally via capacitors CX and CY (0.002 μF to 10 μF) across internal 32 kΩ filter resistors, enabling user-selectable 0.5 Hz to 2.5 kHz 3 dB cutoffs. Output swing ranges from 0.3 V to 2.5 V (no load), with ratiometric sensitivity (174 mV/g typ at VS = 3 V) and zero-g bias (1.5 V typ), both scaling linearly with supply voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Measurement Range | ±5 g full-scale - enables gravity-referenced tilt measurement and moderate shock/vibration detection |
| Output Noise Density | 250 μg/√Hz - supports sub-2 mg resolution in narrowband (<60 Hz) tilt applications |
| Supply Voltage Range | 2.4 V to 5.25 V - allows direct interface with 2.5 V, 3.3 V, and 5 V logic/system rails |
| Quiescent Current | 350 μA at 2.4 V - enables battery-powered operation with multi-year runtime in low-duty-cycle devices |
| Bandwidth Control | User-defined via CX/CY capacitors - eliminates need for internal digital filtering or clocking circuitry |
| Self-Test Response | 55 mV output change (315 mg equiv.) - provides hardware-verified functional check without external stimulus |
| Package Dimensions | 4 mm × 4 mm × 1.45 mm LFCSP - fits high-density PCB layouts in mobile phones and wearables |
Pinout & Package
The ADXL320JCP-REEL7 uses a 16-lead plastic LFCSP_LQ package (CP-16-5a), measuring 4 mm × 4 mm × 1.45 mm, with exposed paddle thermal pad and Pb-free compatible solder profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 8, 9, 11, 13, 16 | No Connect | Must remain unconnected; no internal bonding or function |
| 2 | Self-Test Input | Logic-high (VS) activates electrostatic beam deflection; open or grounded in normal operation |
| 3, 5, 6, 7 | Common Ground | Four dedicated COM pins reduce ground impedance and improve noise immunity |
| 10 | Y-Axis Analog Output | Voltage proportional to Y-acceleration (174 mV/g typ); requires external low-pass filter (CY) |
| 12 | X-Axis Analog Output | Voltage proportional to X-acceleration (174 mV/g typ); requires external low-pass filter (CX) |
| 14, 15 | Power Supply Input | Dual VS pins lower supply path resistance and enhance PSRR for analog outputs |
Key Features
| Feature | Design Value |
|---|---|
| Dual-axis analog voltage outputs | Eliminates need for ADC or digital interface circuitry in simple tilt/motion systems |
| Ratiometric output scaling | Sensitivity and zero-g bias track supply voltage, simplifying calibration when VS varies |
| External bandwidth tuning | Single capacitor per axis (CX/CY) sets anti-aliasing and noise filtering without firmware changes |
| Integrated self-test | Hardware-verified functionality using only ST pin activation-no external equipment required |
| High alignment accuracy | X/Y axes aligned within ±0.1° (typ), enabling precise dual-axis orientation calculation |
Applications
| Smartphone Tilt Interface | PC Laptop Security |
|---|---|
Use Scenario: Detecting device orientation for screen rotation and gaming controls in handheld smartphones. IC Role / Device Role / Timing Role: Dual-axis analog accelerometer providing real-time X/Y gravity vector measurement for coordinate transformation. Use Value: 2 mg resolution at 60 Hz enables accurate 1° tilt detection; 4 mm × 4 mm LFCSP fits tight bezel constraints. | Use Scenario: Triggering hard drive lock upon free-fall detection in portable laptops to prevent head crash. IC Role / Device Role / Timing Role: Low-power motion sensor monitoring for sudden acceleration events exceeding threshold. Use Value: 10,000 g shock survival ensures reliability during drops; 350 μA quiescent current extends battery life between motion checks. |
| Sports Activity Tracker | Health Wearable Posture Monitor |
Use Scenario: Capturing step count, stride length, and activity classification in wrist-worn fitness bands. IC Role / Device Role / Timing Role: Dynamic acceleration sensor capturing vibration signatures of walking/running/jumping. Use Value: 250 μg/√Hz noise floor resolves subtle motion patterns; bandwidth configurable down to 0.5 Hz for low-frequency gait analysis. | Use Scenario: Monitoring seated/standing posture and detecting slouching in ergonomic health devices. IC Role / Device Role / Timing Role: Static acceleration (gravity) sensor measuring angular deviation from vertical reference. Use Value: ±0.1° X/Y alignment error minimizes cross-axis coupling in pitch/roll calculation; ratiometric output simplifies analog-to-digital conversion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-axis analog accelerometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADXL321JCP-REEL7 | ±1.7 g range, identical package and pinout, same noise density and bandwidth control | Better suited for high-resolution tilt sensing where ±1.7 g suffices; lower full-scale reduces quantization error in 12-bit ADC systems | Select ADXL321JCP-REEL7 when application requires finer angular resolution below ±2° and can tolerate reduced shock range |
| MMA7260QT | ±1.5/±2/±4/±6 g selectable range, 3.3 V only, higher 400 μg/√Hz noise, different 16-pin QFN pinout | Requires level-shifting for 2.4–5.25 V systems; lacks ratiometric zero-g bias and self-test pin | Choose MMA7260QT only if multi-range flexibility is critical and board layout accommodates non-pin-compatible footprint |
Compared with ADXL320JCP-REEL7, ADXL321JCP-REEL7 offers tighter full-scale range for precision tilt, while MMA7260QT provides range selectability at the cost of higher noise and non-ratiometric bias-neither is pin-compatible, requiring PCB redesign.
Availability
ADXL320JCP-REEL7 is available at Aetrix Electronics and suitable for smartphone tilt interface, PC laptop security, sports activity tracking, health wearable posture monitoring, and industrial vibration sensing requiring stable component supply across production volumes.
Supply support for ADXL320JCP-REEL7 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 company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and control.
The ADXL320JCP-REEL7 belongs to Analog Devices' iMEMS® accelerometer product line, designed specifically for cost-sensitive, low-power dual-axis motion and tilt sensing in consumer electronics and portable devices.
FAQ
What is the full-scale measurement range of the ADXL320JCP-REEL7?
The ADXL320JCP-REEL7 has a full-scale measurement range of ±5 g, meaning it outputs a voltage corresponding to acceleration values from −5 g to +5 g. This range supports both static gravity-based tilt sensing and dynamic vibration detection. At 3 V supply, typical sensitivity is 174 mV/g, yielding a 1.5 V zero-g output that shifts ±0.87 V per g. The ±5 g range is guaranteed across the −20°C to +70°C operating temperature range specified for the ADXL320JCP-REEL7.
How does the ADXL320JCP-REEL7 achieve user-configurable bandwidth?
The ADXL320JCP-REEL7 achieves user-configurable bandwidth through external capacitors CX and CY connected to the XOUT and YOUT pins, respectively. These capacitors form first-order RC low-pass filters with internal 32 kΩ resistors, setting the 3 dB bandwidth according to F−3dB = 1/(2π × 32 kΩ × C). Bandwidths from 0.5 Hz to 2.5 kHz are achievable using capacitors from 0.002 μF to 10 μF. This analog filtering approach avoids digital processing overhead and enables application-specific noise reduction without firmware changes for the ADXL320JCP-REEL7.
Does the ADXL320JCP-REEL7 require external ADC conversion?
Yes, the ADXL320JCP-REEL7 requires external ADC conversion because it provides analog voltage outputs on XOUT and YOUT pins, not digital data. Its outputs are ratiometric DC voltages (e.g., 1.5 V ±0.87 V for ±5 g at 3 V supply) that must be digitized by a system ADC. No I²C, SPI, or digital interface is integrated-this analog-only architecture reduces component count and power in designs where the host processor handles signal processing. The ADXL320JCP-REEL7's 250 μg/√Hz noise density and 2 mg resolution guide minimum ADC resolution requirements for target applications.
What is the purpose of the ST pin on the ADXL320JCP-REEL7?
The ST (Self-Test) pin on the ADXL320JCP-REEL7 activates an internal electrostatic force that deflects the MEMS sensor beam, producing a known output shift-typically 55 mV (≈315 mg) at XOUT and YOUT when ST is pulled to VS. This allows functional verification without mechanical stimulus. In normal operation, ST may be left open or tied to COM. The pin must never exceed VS + 0.3 V; clamping diodes are recommended in multi-rail systems. This hardware self-test capability is integral to the ADXL320JCP-REEL7's design for field-deployed reliability validation.
Is the ADXL320JCP-REEL7 compatible with lead-free soldering processes?
Yes, the ADXL320JCP-REEL7 is compatible with lead-free soldering processes. Its LFCSP package uses matte tin lead finish and meets Pb-free reflow requirements, with a peak temperature tolerance of 260°C +0°C/−5°C and time within 5°C of peak limited to 20–40 seconds. The recommended Pb-free soldering profile specifies preheat up to 200°C, liquidous temperature at 217°C, and ramp-down ≤6°C/second. Analog Devices qualifies the ADXL320JCP-REEL7 for both Sn/Pb and Pb-free assembly, ensuring manufacturing flexibility without performance compromise.
ADXL320JCP-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- iMEMS®
- Package/Case:
- 16-LQFN Exposed Pad, CSP
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Type:
- -
- Axis:
- X, Y
- Acceleration Range:
- ±5g
- Sensitivity (LSB/g):
- -
- Sensitivity (mV/g):
- -
- Bandwidth:
- 2.5kHz
- Output Type:
- -
- Voltage - Supply:
- 2.4V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-LFCSP-LQ (4x4)
ADXL320JCP-REEL7 FAQ
1.How can I place an order for ADXL320JCP-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADXL320JCP-REEL7 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 ADXL320JCP-REEL7 reliable?
The price and inventory of ADXL320JCP-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADXL320JCP-REEL7 is usually 5 days.
3.What payment methods are accepted for ADXL320JCP-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADXL320JCP-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADXL320JCP-REEL7?
ADXL320JCP-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADXL320JCP-REEL7 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 ADXL320JCP-REEL7?
For technical support, including ADXL320JCP-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADXL320JCP-REEL7 requirements.
6.How does Aetrix verify that ADXL320JCP-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADXL320JCP-REEL7 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 ADXL320JCP-REEL7 meets industry standards.
7.What is the process for return or replacement of ADXL320JCP-REEL7?
All ADXL320JCP-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADXL320JCP-REEL7, 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 ADXL320JCP-REEL7 part is unused and in its original packaging.
Return procedure for ADXL320JCP-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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