ADXL326BCPZ - ±16g 3-Axis Analog Accelerometer | Analog Devices
MPN: ADXL326BCPZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.95 | $8.95 |
| 10 | $7.82 | $78.20 |
| 100 | $6.14 | $614.00 |
| 500 | $5.21 | $2,605.00 |
| 1,000 | $4.45 | $4,450.00 |
ADXL326BCPZ Overview
An accelerometer is a micro-electromechanical sensor (MEMS) that converts mechanical acceleration into a measurable electrical signal; within the broader sensor hierarchy, the ADXL326 belongs to the inertial sensor family, alongside gyroscopes and IMUs. By providing one analog voltage output per axis (X, Y, Z), each centred at roughly VS/2 and ratiometric to the supply, the ADXL326 simplifies host-side integration: an ADC input is all that is required to digitise motion, eliminating the I²C/SPI firmware overhead typical of digital-output MEMS parts.
Key features include user-selectable bandwidth on each axis via a single external capacitor (C_X, C_Y, C_Z), excellent temperature stability, low 1.45 mm profile, and a minimum full-scale range of ±16 g that comfortably covers tilt sensing, free-fall detection, vibration monitoring, and impact logging. Typical X/Y bandwidth is up to 1.6 kHz while Z is up to 550 Hz when set by 0.1 µF capacitors.
The internal architecture combines a polysilicon surface-micromachined sensor with a signal-conditioning ASIC that provides amplification, demodulation, and R-C filter poles. The bandwidth-setting capacitors connect to the XFILT, YFILT, and ZFILT pins and define the -3 dB corner for each axis independently; noise density and resolution scale inversely with this bandwidth.
Typical applications include tilt and inclination sensing, portable / battery-powered motion devices, vibration monitoring in industrial equipment, sports and biomechanics, and consumer-electronics drop detection. The 350 µA typical supply current and 1.8 V minimum supply make the part attractive for handheld designs.
When designing with the ADXL326, place a single 0.1 µF decoupling capacitor (C_DC) close to the supply pins as recommended in the Analog Devices datasheet, and route the analog outputs through a low-pass RC stage or directly into an ADC with adequate input impedance. The bandwidth-setting capacitors are the primary tool for trading noise vs response time; smaller values widen bandwidth but raise output noise.
This page synthesises distributor pricing, same-package drop-in alternatives, and practical design notes that complement, but do not replace, the manufacturer datasheet.
Drop-in alternatives for ADXL326BCPZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADXL326BCPZ-RL7
✅ Drop-In📋 Reference alternative (not in catalog)
ADXL326BCPZ-RL
✅ Drop-In📋 Reference alternative (not in catalog)
ADXL325BCPZ
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ADXL323KCPZ
✅ Drop-In📋 Reference alternative (not in catalog)
ADXL346ACCZ-R2
✅ Drop-In📋 Reference alternative (not in catalog)
ADXL326BCPZ Maximum Ratings & Electrical Characteristics
| Sensor Type | 3-axis accelerometer (X, Y, Z) |
| Output Type | Analog voltage (3 ratiometric outputs) |
| Minimum Full-Scale Range | ±16 g |
| Typical Full-Scale Range | ±19 g |
| X/Y Bandwidth (typ., @ CX=CY=0.1 µF) | 1.6 kHz |
| Z Bandwidth (typ., @ CZ=0.1 µF) | 550 Hz |
| Supply Voltage Range | 1.8 V to 3.6 V (single supply) |
| Supply Current (typ.) | 350 µA |
| Shock Survival | 10,000 g |
| Operating Temperature Range | -40 °C to +85 °C |
| Package | 16-LFCSP-LQ (4 mm × 4 mm), 1.45 mm profile |
| Mounting Type | Surface Mount |
| Bandwidth Adjustment | External capacitor on XFILT, YFILT, ZFILT pins |
| RoHS Status | RoHS Compliant |
| Lead-Free Status | Lead Free |
| Output Type (per axis) | 1 analogue voltage output (X, Y, Z) |
ADXL326BCPZ Pin Configuration
| Pin 1 | GND — Ground |
| Pin 2 | NC — Not connected (per datasheet) |
| Pin 3 | NC — Not connected (per datasheet) |
| Pin 4 | NC — Not connected (per datasheet) |
| Pin 5 | NC — Not connected (per datasheet) |
| Pin 6 | Xout — X-axis analog output |
| Pin 7 | Yout — Y-axis analog output |
| Pin 8 | Zout — Z-axis analog output |
| Pin 9 | NC — Not connected (per datasheet) |
| Pin 10 | NC — Not connected (per datasheet) |
| Pin 11 | XFILT — X-axis bandwidth-setting capacitor |
| Pin 12 | YFILT — Y-axis bandwidth-setting capacitor |
| Pin 13 | ZFILT — Z-axis bandwidth-setting capacitor |
| Pin 14 | VS — Supply voltage (1.8 V to 3.6 V) |
| Pin 15 | NC — Not connected (per datasheet) |
| Pin 16 | NC — Not connected (per datasheet) |
Typical Applications
ADXL326BCPZ is suitable for 6 applications: Battery-Powered Tilt & Inclination Sensing, Portable & Wearable Motion Monitoring, Industrial Vibration Monitoring, Free-Fall & Impact Detection in HDDs/Storage, Consumer Electronics Drop Detection, Sports & Biomechanics Measurement.
Battery-Powered Tilt & Inclination Sensing
The ADXL326BCPZ is well-suited to tilt and inclination measurement because each axis output is ratiometric to VS and centred at approximately VS/2, so a simple ADC differential reading resolves inclination to sub-degree accuracy. With 350 µA typical supply current from 1.8 V to 3.6 V and 10,000 g shock survival, it fits battery-powered inclinometers, HVAC damper position feedback, and solar tracker angle monitoring. External filter capacitors on XFILT/YFILT/ZFILT let the designer trade bandwidth (and thus noise) against tilt response time. Compared with digital-output MEMS parts, the ADXL326's three analog outputs remove the need for an I²C/SPI stack on the host MCU.
Recommended
Portable & Wearable Motion Monitoring
Wearable fitness bands and pedometers benefit from the ADXL326BCPZ's 350 µA typical supply current and small 4x4 mm LFCSP-LQ footprint. The ±16 g minimum full-scale range comfortably captures running, jumping, and impact events that saturate lower-g parts, while the 10,000 g shock survival protects the device against accidental drops during everyday use. Each X/Y/Z channel can be read by an embedded ADC at up to 1.6 kHz X/Y bandwidth (550 Hz Z), enabling step-detection algorithms and gesture recognition. The exposed pad improves thermal dissipation, important when the part sits under a sealed enclosure with limited airflow.
Recommended
Industrial Vibration Monitoring
Industrial condition-monitoring applications - motor vibration analysis, rotating-equipment health, structural health monitoring - take advantage of the ADXL326BCPZ's wide bandwidth (1.6 kHz on X/Y, 550 Hz on Z with 0.1 µF filter caps) and ±16 g full-scale. The bandwidth can be tuned per axis via external capacitors to match the dominant vibration modes being tracked. Its analog outputs integrate naturally with industrial 4-20 mA loops or high-speed ADC front-ends, and the 10,000 g shock rating tolerates installation in harsh machinery environments. An optional on-board antialiasing RC stage before the ADC keeps sampled data clean.
Recommended
Free-Fall & Impact Detection in HDDs/Storage
Free-fall detection in portable hard drives and ruggedised storage requires an accelerometer that detects micro-gravity events quickly and reliably. The ADXL326BCPZ's ±16 g range, 1.6 kHz X/Y bandwidth, and 10,000 g shock survival make it well-suited to detecting the onset of free-fall and triggering a head-parking routine within milliseconds. The single 0.1 µF decoupling capacitor (C_DC) recommended by the Analog Devices datasheet keeps the analog outputs quiet even on a switching-power supply. Three independent analog outputs also simplify redundant-channel designs for safety-critical applications.
Recommended
Consumer Electronics Drop Detection
Drop-detection algorithms in laptops, tablets, and rugged handhelds benefit from the ADXL326BCPZ's high shock survivability (10,000 g) and analog simplicity - one part, three outputs, three ADC channels on the host. The 1.45 mm thin LFCSP-LQ profile allows it to sit under the enclosure without intruding into the device stack-up. Because outputs are ratiometric to VS, the part tolerates wide battery-voltage swings in lithium-ion powered products. Designers typically feed Zout to a comparator to trigger immediate park/lock routines, while X/Y provide orientation context.
Recommended
Sports & Biomechanics Measurement
Sports performance sensors and biomechanics research often require accelerometers with wider full-scale ranges than typical consumer IMUs offer. The ADXL326BCPZ's ±16 g minimum full-scale (typical ±19 g) captures high-impact events - boxing punches, ski landings, football tackles - without saturating. Three analog outputs stream continuously into a data logger or wireless transmitter, providing raw data for offline motion analysis. With filter capacitor tuning, designers can trade bandwidth for noise floor to match the bandwidth of the biomechanical event under study.
Recommended
Recommended Products Summary
Engineering reference data for ADXL326BCPZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADXL326BCPZ-RL7 | ADXL326BCPZ-RL | ADXL325BCPZ | ADXL323KCPZ | ADXL346ACCZ-R2 |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 16-LFCSP-LQ (4x4) | 16-LFCSP-LQ (4x4) - same | 16-LFCSP-LQ (4x4) - same | 16-LFCSP-LQ (4x4) - same | 16-LFCSP-LQ (4x4) - same | 16-LCCSP (4x4) - same footprint family |
| Output Type | Analog (3 axes) | Analog (3 axes) | Analog (3 axes) | Analog (3 axes) | Analog (3 axes) | Digital SPI/I²C |
| Full-Scale Range (min) | ±16 g | ±16 g | ±16 g | ±5 g | ±3 g | ±2/±4/±8/±16 g selectable |
| Supply Voltage Range | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.4 V to 5.25 V | 1.7 V to 2.75 V |
| Shock Survival | 10,000 g | 10,000 g | 10,000 g | 10,000 g | 10,000 g | 10,000 g |
| Bandwidth (X/Y, typ.) | 1.6 kHz @ 0.1 µF | 1.6 kHz @ 0.1 µF | 1.6 kHz @ 0.1 µF | 1.6 kHz @ 0.1 µF | 1.6 kHz @ 0.1 µF | Up to 3.2 kHz (digital, ODR-dependent) |
| RoHS / Lead-Free | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes |
Key Differentiators
- Analog ratiometric outputs vs digital interface (vs ADXL346ACCZ-R2)
- Higher full-scale range than lower-g analog siblings (vs ADXL325BCPZ)
- Wide single-supply range and 10,000 g shock survival (vs ADXL326BCPZ-RL7)
Design Notes
Per the Analog Devices ADXL326 datasheet, a single 0.1 µF decoupling capacitor (C_DC) placed close to the VS pin adequately decouples the accelerometer from noise on the power supply in most applications. For designs with switching regulators nearby, adding a 10 µF bulk capacitor plus a small ferrite bead on VS further reduces supply-noise coupling into the analog outputs. The ratiometric outputs scale with VS, so use a low-noise LDO (such as the Analog Devices ADP150) for best absolute accuracy.
The exposed pad (pin 0) of the 16-LFCSP-LQ package must be soldered to a low-impedance ground plane for thermal performance and electrical grounding. Route Xout/Yout/Zout as short, parallel-trace differential pairs away from switching nodes, and keep the XFILT/YFILT/ZFILT capacitors within a few millimetres of the IC pins. Avoid routing the analog outputs near digital clock lines or switching regulators, which couple high-frequency noise into the MEMS output.
Do not use a long RC filter on Xout/Yout/Zout without considering the ADC input impedance - the ADXL326 outputs can drive modest loads but will degrade in linearity if loaded below ~10 kΩ. The bandwidth-setting capacitors on XFILT/YFILT/ZFILT must be low-leakage ceramic or film types; electrolytic capacitors will inject leakage current that biases the output. Per datasheet, a 0.1 µF filter cap gives 1.6 kHz X/Y bandwidth and 550 Hz Z bandwidth - smaller values widen bandwidth but raise noise.
Compliance Information
RoHS-compliant and lead-free per manufacturer product page and DigiKey listings. Not AEC-Q100 qualified - for automotive applications consider AEC-Q100-qualified Analog Devices alternatives such as the ADXL345Q or ADXL356. Halogen-free per ADI product page.
