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Analog Devices Inc. ADXRS646BBGZ-RL
- Part No.:
- ADXRS646BBGZ-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Gyroscopes
- Package:
- 32-BFCBGA
- Datasheet:
-
ADXRS646BBGZ-RL.pdf
- Description:
- IC GYROSCOPE YAW RATE 32CBGA
- Quantity:
- Payment:
- Shipping:
Inventory:277
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Product details
Overview
ADXRS646BBGZ-RL from Analog Devices is a high-stability, vibration-rejecting Z-axis (yaw rate) gyroscope IC with 12°/hr bias stability, 0.01°/√sec angle random walk, ±250°/sec measurement range, and 6 V single-supply operation. It delivers precision angular rate sensing in industrial platform stabilization systems exposed to severe mechanical shock and broadband vibration.
For engineers reviewing the ADXRS646BBGZ-RL datasheet, ADXRS646BBGZ-RL pinout, ADXRS646BBGZ-RL application, or ADXRS646BBGZ-RL equivalent, key selection criteria include its ratiometric output architecture, self-test capability via ST1/ST2 digital inputs, integrated temperature sensor output, and CBGA package suitability for high-reliability embedded motion control.
Technical Context
The ADXRS646BBGZ-RL implements a resonator-based Coriolis sensing principle using a differential quad-sensor MEMS structure fabricated via Analog Devices' BiMOS surface-micromachining process. Its architecture inherently rejects linear acceleration and vibration by converting external g-forces into common-mode signals canceled by fully differential signal conditioning.
Bandwidth is user-adjustable up to 1000 Hz via external COUT capacitor (e.g., 0.01 µF for 80 Hz), while internal 180 kΩ ±1% ROUT enables precise low-pass filtering. The device integrates on-chip charge pump (CP1–CP4), HV filter (CP5), and ratiometric reference (VRATIO) to support 6 V operation without external high-voltage supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sensitivity | 9 mV/°/sec typical; defines analog output voltage per unit angular rate, enabling direct interface with 12-bit+ ADCs |
| Measurement Range | ±250°/sec minimum; supports full-scale rotation sensing in robotic joints and inertial navigation subsystems |
| Bias Stability | 12°/hr typical; ensures long-term zero-rate output drift remains below 0.0033°/sec, critical for dead-reckoning accuracy |
| Angle Random Walk | 0.01°/√sec; sets fundamental noise floor limiting short-term orientation resolution in dynamic environments |
| Vibration Rectification | 0.0001°/sec/g²; quantifies minimal DC offset generation under 25 g rms broadband vibration (50 Hz–5 kHz) |
| Self-Test Response | −50°/sec (ST1), +50°/sec (ST2); provides deterministic, repeatable electrical verification of sensor and signal chain integrity |
| Operating Temperature | −40°C to +105°C; enables deployment in engine compartments, industrial enclosures, and outdoor equipment |
| Shock Survivability | 10,000 g powered; guarantees functional survival during drop testing and high-G mechanical transients |
Pinout & Package
The ADXRS646BBGZ-RL is housed in a 7 mm × 7 mm × 3 mm, 32-terminal Ceramic Ball Grid Array (CBGA) package (BG-32-3), optimized for thermal stability and mechanical robustness in harsh environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1B, 2A (RATEOUT) | Primary analog output | Provides ratiometric voltage proportional to yaw rate; requires external RC filter for demodulation spike suppression |
| 1C, 2C (SUMJ) | Summing junction | Allows null adjustment via external current injection; used with RATEOUT to modify gain and extend range to ±450°/sec |
| 5F, 5G (ST1) / 4F, 4G (ST2) | Digital self-test inputs | Logic-high activation triggers deterministic mechanical excitation; mismatch ≤±0.5% ensures reliable fault detection |
| 3F, 3G (TEMP) | Temperature sensor output | Delivers 2.9 V at 25°C with 10 mV/°C coefficient; enables on-board thermal compensation without external sensors |
| 1E, 2E (VRATIO) | Ratiometric reference input | Defines scaling for RATEOUT, TEMP, and self-test outputs; must be ≤ AVCC to guarantee full measurement range |
| CP1–CP4, CP5 | Charge pump capacitors | CP1–CP4 (22 nF) generate internal 21 V; CP5 (100 nF) filters HV supply-omitted if external 21 V available |
Key Features
| Feature | Design Value |
|---|---|
| Differential quad-sensor MEMS architecture | Rejects linear acceleration and vibration across 50 Hz–5 kHz without software compensation |
| Ratiometric output design | Null, sensitivity, self-test, and temperature outputs track VRATIO, eliminating supply-induced gain errors |
| Integrated temperature sensor | Enables real-time thermal calibration with <±0.5°C repeatability over −40°C to +105°C |
| Dual independent self-test inputs | ST1 and ST2 provide orthogonal verification paths, supporting ASIL-B functional safety diagnostics |
| Ultrasmall CBGA package | 0.15 cc volume and <0.5 g mass minimize inertial loading on sensitive platforms like UAV gimbals |
Applications
| Industrial Platform Stabilization | Heavy Equipment Inertial Navigation |
|---|---|
Use Scenario: Stabilizing crane booms and excavator arms during operation on uneven terrain with high ambient vibration. IC Role / Device Role / Timing Role: Yaw rate sensor providing real-time angular velocity feedback to closed-loop hydraulic control systems. Use Value: 12°/hr bias stability and 0.0001°/sec/g² vibration rectification prevent drift-induced positioning errors under 15 g rms broadband vibration. | Use Scenario: Dead-reckoning augmentation in GPS-denied underground mining vehicles navigating narrow tunnels. IC Role / Device Role / Timing Role: Core Z-axis gyroscope in AHRS, fusing with accelerometers to maintain heading accuracy during signal loss. Use Value: 10,000 g shock survivability ensures continued operation after vehicle impacts; ±250°/sec range covers aggressive steering maneuvers. |
| Robotics Joint Control | Unmanned Aerial Vehicle (UAV) Gimbals |
Use Scenario: Precision torque control in collaborative robot (cobot) elbow and wrist joints subject to repetitive mechanical stress. IC Role / Device Role / Timing Role: High-bandwidth yaw rate feedback element in servo motor position loops requiring sub-degree orientation resolution. Use Value: 0.01°/√sec angle random walk enables <0.1° RMS orientation error over 1-second integration windows. | Use Scenario: Stabilizing electro-optical payloads on multirotor UAVs experiencing turbulent airflow and propeller-induced vibration. IC Role / Device Role / Timing Role: Primary yaw axis sensor in gimbal controller, rejecting 20–2000 Hz aerodynamic and mechanical disturbances. Use Value: Differential quad-sensor design eliminates need for external vibration isolation mounts, reducing payload mass and complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar yaw rate sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADXRS649BBGZ-RL | Wider ±450°/sec measurement range; identical bias stability, noise, and vibration rejection specs | Preferred for high-dynamic-range applications like aerospace actuator feedback where extended range is mandatory | Select ADXRS649BBGZ-RL only when full ±450°/sec range is required; otherwise ADXRS646BBGZ-RL offers optimal cost/performance balance |
| IMU381ZA | 6-axis IMU (3-axis gyro + 3-axis accel); gyro bias stability 5°/hr, higher power (12 mA), larger LGA package | Used in compact AHRS where space-constrained designs require integrated motion sensing without external accelerometers | Choose IMU381ZA when accelerometer fusion is needed; ADXRS646BBGZ-RL remains superior for pure high-stability yaw sensing with minimal board area |
Compared with ADXRS646BBGZ-RL, ADXRS649BBGZ-RL trades no performance in stability or noise for extended range, while IMU381ZA adds accelerometer functionality at the cost of higher power, lower gyro stability, and reduced vibration immunity-making ADXRS646BBGZ-RL the optimal choice for standalone, high-reliability yaw rate measurement.
Availability
ADXRS646BBGZ-RL is available at Aetrix Electronics and suitable for industrial platform stabilization, heavy equipment inertial navigation, and robotics joint control requiring stable component supply across extended temperature ranges and high-shock environments.
Supply support for ADXRS646BBGZ-RL 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 leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The ADXRS646BBGZ-RL belongs to Analog Devices' precision MEMS gyroscope product line, engineered specifically for industrial-grade motion sensing in mechanically hostile environments where vibration immunity and long-term bias stability are non-negotiable.
FAQ
What is the primary sensing axis and output polarity convention for the ADXRS646BBGZ-RL?
The ADXRS646BBGZ-RL is a Z-axis (yaw rate) gyroscope. Clockwise rotation about the axis normal to the top surface of the package produces a positive-going RATEOUT voltage. This polarity is defined in the datasheet's RATE SENSITIVE AXIS section and verified in Figure 2, ensuring consistent integration into motion control firmware that expects standard right-hand-rule conventions.
How does the ADXRS646BBGZ-RL achieve its high vibration rejection performance?
The ADXRS646BBGZ-RL achieves vibration rejection through a patented differential quad-sensor MEMS architecture. Four polysilicon sensing structures are mechanically coupled so that linear acceleration and vibration induce common-mode signals, which are canceled by the device's fully differential signal conditioning circuitry-eliminating the need for external compensation algorithms or hardware isolators.
Can the ADXRS646BBGZ-RL operate without external capacitors, and what is their function?
No-the ADXRS646BBGZ-RL requires five external capacitors: CP1–CP4 (22 nF each) for on-chip charge pump operation generating 21 V, and CP5 (100 nF) for HV supply filtering. Omitting them prevents proper internal biasing. If an external 21 V supply is available, CP1–CP4 may be omitted, but CP5 remains mandatory for stable operation.
What is the purpose of the SUMJ pin on the ADXRS646BBGZ-RL, and how is it used?
The SUMJ pin (1C, 2C) is the summing junction for the output amplifier. It enables null adjustment via external current injection and allows extension of the measurement range to ±450°/sec by adding a 225 kΩ resistor between RATEOUT and SUMJ. This pin must not be shorted or left floating, as it directly affects output gain and offset calibration.
Does the ADXRS646BBGZ-RL support continuous self-test during active rotation sensing?
Yes-the ADXRS646BBGZ-RL supports continuous self-test while measuring angular rate. Activating ST1 or ST2 injects a deterministic mechanical stimulus that superimposes a known rate offset (−50°/sec or +50°/sec) onto the true rotation signal, enabling real-time health monitoring without interrupting motion feedback loops.
ADXRS646BBGZ-RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 32-BFCBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Analog
- Axis:
- Z (Yaw)
- Range °/s:
- ±250
- Sensitivity (LSB/(°/s)):
- -
- Sensitivity (mV/°/s):
- 9
- Bandwidth:
- 1kHz
- Output Type:
- Analog Voltage
- Voltage - Supply:
- 5.75V ~ 6.25V
- Current - Supply:
- 4 mA
- Features:
- Temperature Sensor
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
ADXRS646BBGZ-RL FAQ
1.How can I place an order for ADXRS646BBGZ-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADXRS646BBGZ-RL 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 ADXRS646BBGZ-RL reliable?
The price and inventory of ADXRS646BBGZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADXRS646BBGZ-RL is usually 5 days.
3.What payment methods are accepted for ADXRS646BBGZ-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADXRS646BBGZ-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADXRS646BBGZ-RL?
ADXRS646BBGZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADXRS646BBGZ-RL 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 ADXRS646BBGZ-RL?
For technical support, including ADXRS646BBGZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADXRS646BBGZ-RL requirements.
6.How does Aetrix verify that ADXRS646BBGZ-RL is sourced from the original manufacturer or authorized distributors?
All ADXRS646BBGZ-RL 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 ADXRS646BBGZ-RL meets industry standards.
7.What is the process for return or replacement of ADXRS646BBGZ-RL?
All ADXRS646BBGZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with ADXRS646BBGZ-RL, 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 ADXRS646BBGZ-RL part is unused and in its original packaging.
Return procedure for ADXRS646BBGZ-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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