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STMicroelectronics I3G4250D
- Part No.:
- I3G4250D
- Manufacturer:
- STMicroelectronics
- Category:
- Gyroscopes
- Package:
- 16-TFLGA
- Datasheet:
-
I3G4250D.pdf
- Description:
- MEMS MOTION SENSOR 3AXIS 16LGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,578
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Product details
Overview
I3G4250D from STMicroelectronics is a low-power, 3-axis digital-output gyroscope with ±245/±500/±2000 dps selectable full-scale range, 16-bit angular rate output resolution, integrated FIFO and temperature sensor, operating from -40°C to +85°C in an LGA-16 package - deployed in industrial motion control, navigation systems, and robotics for precise angular velocity sensing.
For engineers reviewing the I3G4250D datasheet, I3G4250D pinout, I3G4250D application, or I3G4250D equivalent, key selection criteria include its dual I²C/SPI interface support, embedded high/low-pass filtering, programmable interrupt outputs (INT1, DRDY/INT2), and factory-calibrated zero-rate stability across temperature.
Technical Context
The I3G4250D integrates a micromachined silicon MEMS sensing element with a dedicated CMOS ASIC interface, enabling closed-loop drive control and digitized angular rate output via ADC and digital filtering blocks. Its single-driving mass architecture ensures minimal sensitivity drift and ultra-stable zero-rate level over time and temperature.
Digital functionality includes a 32-slot × 16-bit × 3-channel FIFO supporting bypass, FIFO, and stream modes; configurable I²C (up to 400 kHz) or SPI (up to 10 MHz, 3-/4-wire); and two independent interrupt lines (INT1 for user-defined events, DRDY/INT2 for data-ready/FIFO watermark). The PLLFILT pin requires external RC network (10 nF, 470 nF, 10 kΩ) for phase-locked loop stabilization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Full Scale Range | Selectable ±245 / ±500 / ±2000 dps - enables trade-off between resolution and dynamic range per application |
| Output Resolution | 16-bit angular rate data - provides 0.00875 dps/LSB at ±245 dps scale for sub-degree-per-second precision |
| Output Data Rate | 105 / 208 / 420 / 840 Hz - supports real-time motion tracking with configurable latency vs. bandwidth |
| Zero-Rate Stability | ±0.03–0.04 dps/°C - eliminates need for runtime calibration in industrial temperature environments |
| Supply Current | 6.1 mA active, 1.5 mA sleep, 5 µA power-down - enables battery-powered operation with flexible power-state management |
| Interface Support | I²C (standard/fast mode) and SPI (3-/4-wire) - allows integration into diverse host MCU ecosystems without protocol translation |
| Operating Temperature | -40°C to +85°C - qualified for harsh industrial and automotive-adjacent environments |
Pinout & Package
The I3G4250D is housed in a 4 mm × 4 mm × 1.1 mm LGA-16 plastic land grid array package with exposed pad for thermal performance and mechanical robustness.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 Vdd_IO | I/O power supply | Separate 1.71–Vdd+0.1 V rail powers digital interfaces - enables 1.8 V logic compatibility while analog core runs at 2.4–3.6 V |
| 2 SCL/SPC | Clock input | Shared pin for I²C SCL or SPI SPC - mode selected by CS logic level |
| 3 SDA/SDI/SDO | Bidirectional data | Tri-function pin: I²C SDA, SPI SDI (input), or 3-wire SDO (output) - simplifies PCB routing |
| 4 SDO/SA0 | Address select / output | Configures LSB of I²C address (1101000b/1101001b) or serves as SPI SDO - enables dual-gyro I²C bus sharing |
| 5 CS | Interface mode select | CS = 1 → I²C enabled; CS = 0 → SPI enabled - hardware-selectable protocol avoids software configuration errors |
| 6 DRDY/INT2 | Interrupt/data ready | Asserts on new data availability or FIFO watermark - reduces host polling overhead and synchronizes burst reads |
| 7 INT1 | Programmable interrupt | Configurable for motion detection, FIFO overflow, or threshold crossing - offloads real-time event processing from host MCU |
| 14 PLLFILT | PLL filter node | Requires external R-C network (10 kΩ, 10 nF, 470 nF) - stabilizes internal phase-locked loop for consistent sensor timing |
| 13 GND / 16 Vdd | Power reference / analog supply | Dual power domains: Vdd (2.4–3.6 V) powers MEMS and ADC; GND provides common return - improves noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Embedded 32-slot FIFO | Stores yaw/pitch/roll data independently - enables burst reads and reduces host wake-up frequency by >90% in low-duty-cycle applications |
| User-selectable bandwidth filters | Configurable low-pass and high-pass digital filters - suppresses vibration-induced noise in robotic arm or drone stabilization loops |
| Factory-calibrated zero-rate level | ±10 dps typical offset at ±245 dps scale, ±0.03 dps/°C drift - eliminates production-line trim and field recalibration |
| Integrated temperature sensor | 8-bit output, 1 °C/digit resolution, 1 Hz refresh - provides on-chip thermal compensation reference without external sensor |
| High shock survivability | Rated for 10,000 g mechanical shock - maintains calibration integrity during drop testing or motor startup transients |
Applications
| Industrial Motion Control | Navigation & Telematics |
|---|---|
Use Scenario: Real-time joint-angle feedback in CNC machine tool rotary tables and servo-driven conveyors. IC Role / Device Role / Timing Role: Primary angular rate sensor feeding closed-loop PID controllers with <1 ms ODR latency at 840 Hz. Use Value: ±0.03 dps/°C zero-rate drift ensures positional accuracy remains within ±0.1° over full industrial temperature range without recalibration. | Use Scenario: Dead reckoning augmentation in GPS-denied urban canyons for fleet telematics units. IC Role / Device Role / Timing Role: Yaw-rate source for inertial navigation fusion algorithms running on ARM Cortex-M7 host MCU. Use Value: 16-bit resolution and 420 Hz ODR enable sub-meter heading error accumulation over 10-second GPS outages. |
| Robotics & MMI | Smart Appliances |
Use Scenario: Gesture recognition and orientation tracking in collaborative robot teach pendants and HMI panels. IC Role / Device Role / Timing Role: Low-latency motion trigger for touchless UI navigation using DRDY interrupt-driven polling. Use Value: Embedded FIFO and programmable INT1 allow gesture detection with <50 µA average current in sleep-mode wake cycles. | Use Scenario: Lid-tilt and drum-rotation monitoring in smart washing machines and dryers. IC Role / Device Role / Timing Role: Vibration-resistant angular monitor detecting unbalanced load conditions during spin cycles. Use Value: 10,000 g shock rating prevents false triggers during high-G drum acceleration/deceleration events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-axis digital gyroscope applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LSM6DSOX | Integrated 6-axis IMU (gyro + accelerometer), higher ODR (6.6 kHz), no separate PLLFILT requirement | Requires co-location with accelerometer; lacks standalone gyro optimization for pure angular rate use cases | Choose when fused motion sensing is needed; avoid if minimizing BOM count or optimizing for gyro-only signal chain purity |
| ADXRS290 | Analog output, wider full-scale (±2000 dps), higher noise floor (0.015°/√Hz), no embedded FIFO or digital filters | Needs external ADC and filtering; better suited for high-dynamic-range analog control loops than digital host interfacing | Choose for legacy analog control systems; avoid for new designs requiring SPI/I²C direct connection or low-power burst-read operation |
Compared with LSM6DSOX and ADXRS290, the I3G4250D uniquely balances standalone digital gyroscope performance, ultra-stable zero-rate behavior, and minimal external component count - making it optimal for cost-sensitive, temperature-variable industrial motion sensing where only angular rate matters.
Availability
I3G4250D is available at Aetrix Electronics and suitable for industrial motion control, navigation systems, and robotics requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.
Supply support for I3G4250D 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, specializing in MEMS sensors, microcontrollers, and power management ICs with strong industrial and automotive focus.
The I3G4250D belongs to ST's high-stability MEMS motion sensor product line, designed specifically for industrial-grade angular rate measurement where zero-drift, shock resilience, and dual-interface flexibility outweigh raw bandwidth or multi-sensor integration.
FAQ
What is the function of the PLLFILT pin and what external components are required?
The PLLFILT pin connects to an external second-order low-pass filter (10 kΩ resistor, 10 nF capacitor to ground, 470 nF capacitor to ground) that stabilizes the internal phase-locked loop used for MEMS drive-sensing synchronization. This network is mandatory for stable operation - omitting it causes erratic output or failure to initialize. Component tolerances must be ±10% per ST's TN0018 design guidelines.
How does the I3G4250D handle I²C address conflicts when multiple devices share the same bus?
The I3G4250D supports two I²C addresses (1101000b and 1101001b) via the SDO/SA0 pin: grounding SDO selects 0x68 (D0h/D1h), pulling it high selects 0x69 (D2h/D3h). This allows exactly two identical I3G4250D units on one I²C bus without address remapping or software arbitration - verified in DS10938 Rev 3 Section 5.1.1.
Can the embedded FIFO operate without host intervention after initial configuration?
Yes - once configured in FIFO or stream mode via FIFO_CTRL_REG (2Eh) and enabled interrupts via CTRL_REG3 (22h), the FIFO autonomously fills with X/Y/Z data at the selected ODR. Host only needs to respond to DRDY/INT2 or INT1 interrupts to read data; no continuous polling is required. Stream mode automatically overwrites oldest data when full, ensuring uninterrupted capture.
What is the impact of separating Vdd and Vdd_IO supplies in system design?
Separating Vdd (2.4–3.6 V for MEMS/ADC core) and Vdd_IO (1.71–Vdd+0.1 V for digital I/O) allows interfacing with 1.8 V host MCUs while maintaining full analog performance. If Vdd is removed but Vdd_IO remains, communication remains active but sensor measurements halt - enabling low-power "listen-only" mode for wake-on-interrupt applications without full power-up.
I3G4250D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 16-TFLGA
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- Digital
- Axis:
- X (Pitch), Y (Roll), Z (Yaw)
- Range °/s:
- ±245, 500, 2000
- Sensitivity (LSB/(°/s)):
- 8.75 ~ 70
- Sensitivity (mV/°/s):
- -
- Bandwidth:
- -
- Output Type:
- I2C, SPI
- Voltage - Supply:
- 2.4V ~ 3.6V
- Current - Supply:
- 6.1 mA
- Features:
- Adjustable Bandwidth, Selectable Scale, Temperature Sensor
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
I3G4250D FAQ
1.How can I place an order for I3G4250D through Aetrix?
Please submit a Request for Quotation (RFQ) for I3G4250D 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 I3G4250D reliable?
The price and inventory of I3G4250D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for I3G4250D is usually 5 days.
3.What payment methods are accepted for I3G4250D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for I3G4250D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for I3G4250D?
I3G4250D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your I3G4250D 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 I3G4250D?
For technical support, including I3G4250D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your I3G4250D requirements.
6.How does Aetrix verify that I3G4250D is sourced from the original manufacturer or authorized distributors?
All I3G4250D 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 I3G4250D meets industry standards.
7.What is the process for return or replacement of I3G4250D?
All I3G4250D units undergo pre-shipment inspection (PSI). If there is an issue with I3G4250D, 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 I3G4250D part is unused and in its original packaging.
Return procedure for I3G4250D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
I3G4250D Tags
-
I3G4250DTR
STMicroelectronics
-
IAM-20380HT
TDK InvenSense
-
IAM-20380
TDK InvenSense
-
A3G4250DTR
STMicroelectronics
-
SCR2100-D08-05
Murata Electronics
-
ADXRS623BBGZ-RL
Analog Devices Inc.
-
ADXRS624BBGZ-RL
Analog Devices Inc.
-
ADXRS620BBGZ-RL
Analog Devices Inc.
-
ADXRS642BBGZ-RL
Analog Devices Inc.
-
ADXRS450BEYZ
Analog Devices Inc.
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ADXRS453BRGZ
Analog Devices Inc.
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ADXRS649BBGZ
Analog Devices Inc.
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