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STMicroelectronics LPY550ALTR
- Part No.:
- LPY550ALTR
- Manufacturer:
- STMicroelectronics
- Category:
- Gyroscopes
- Package:
- 16-LFLGA
- Datasheet:
-
LPY550ALTR.pdf
- Description:
- GYROSCOPE MEMS DUAL AXIS 16-LGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,059
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Product details
Overview
LPY550ALTR from STMicroelectronics is a dual-axis MEMS gyroscope measuring angular rate along pitch and yaw axes with ±500°/s full-scale range, 140 Hz bandwidth, 2 mV/°/s amplified sensitivity, and analog voltage outputs. It operates from 2.7–3.6 V over –40°C to +85°C and is used in motion-sensing human interface devices requiring stable analog rate feedback.
For engineers reviewing the LPY550ALTR datasheet, LPY550ALTR pinout, LPY550ALTR application, or LPY550ALTR equivalent, this page delivers verified mechanical and electrical specifications, LGA-16 package layout, self-test and power-down functionality, and real-world integration guidance for pointing devices, gaming controllers, and industrial motion control systems.
Technical Context
The LPY550ALTR integrates a single micromachined driving mass operating on the Coriolis principle, with separate charge amplifiers and demodulators per axis. Its embedded PLL synchronizes actuation and sensing paths, enabling precise analog rate detection without digital conversion.
It provides two parallel output paths per axis: unamplified (OUTX/OUTZ) and 4× amplified (4xOUTX/4xOUTZ), each with dedicated low-pass filtering. The device supports external high-pass filter reset via HP pin and includes factory-trimmed reference voltage (1.23 V) and zero-rate level calibration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Full Scale Range | ±500°/s (amplified output); enables direct interface to 12-bit ADCs with >10-bit effective resolution at max rate |
| Bandwidth | 140 Hz (-3 dB); supports real-time motion tracking up to gaming-grade responsiveness |
| Sensitivity | 2 mV/°/s (4xOUT); yields 1 V output swing across full scale, simplifying signal conditioning |
| Zero-Rate Level | 1.23 V (ratiometrically stable); serves as DC reference for differential measurement and offset compensation |
| Supply Current | 6.8 mA (active), 1–5 µA (power-down); allows battery-powered operation with rapid wake-up |
| Operating Temp | –40°C to +85°C; validated for industrial enclosure environments without thermal derating |
| Shock Survivability | 10,000 g / 0.1 ms; withstands mechanical shock during handheld device drop events |
Pinout & Package
LPY550ALTR is housed in a 5 mm × 5 mm × 1.5 mm plastic land grid array (LGA-16) package with exposed pad for thermal and mechanical stability. The bottom-side layout features 16 solderable lands arranged in a 4×4 grid, compatible with standard reflow profiles per JEDEC J-STD-020C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Primary 0 V return for analog and digital sections; must be low-impedance connection to PCB ground plane |
| 4 OUTX / 10 OUTZ | Unamplified analog outputs | Direct sensor outputs (0.5 mV/°/s); require external amplification or buffering before ADC sampling |
| 6 4xOUTX / 8 4xOUTZ | Amplified analog outputs | Buffered 4× gain outputs (2 mV/°/s); drive 10 kΩ loads directly with <1% linearity error |
| 11 ST | Self-test control | Logic-high activates electrostatic test force; verifies mechanical integrity and signal chain continuity |
| 12 PD | Power-down enable | Logic-high reduces current to µA range; retains configuration state for sub-100 µs wake-up |
| 13 HP | High-pass filter reset | Pulse-high resets external HP filter capacitor; prevents saturation during large transient rotations |
| 7 Vref | Internal reference voltage | Stable 1.23 V source; used for biasing external filters and calibrating ADC reference |
| 16 Vdd | Power supply | 2.7–3.6 V input; requires local 100 nF + 10 µF decoupling per application note |
Key Features
| Feature | Design Value |
|---|---|
| Dual-axis analog rate output | Independent pitch/yaw channels with matched gain and offset; eliminates need for multi-chip synchronization |
| Embedded self-test | On-chip electrostatic actuation validates mechanical response and signal path without external stimulus |
| Factory-trimmed zero-rate level | 1.23 V ±15 mV at 25°C; reduces system-level calibration effort in production test |
| Integrated low-pass filtering | Fixed 140 Hz cutoff per channel; suppresses high-frequency noise while preserving motion dynamics |
| ECOPACK® RoHS/Green compliance | LGA-16 package meets JEDEC J-STD-020C reflow standards and EU environmental directives |
Applications
| Gaming Remote Controller | Industrial Robotic Arm Joint |
|---|---|
Use Scenario: Wireless gamepad detecting tilt and rotation for immersive 3D navigation in console games. IC Role / Device Role / Timing Role: Dual-axis analog gyroscope providing real-time pitch/yaw rate data to MCU for motion-to-cursor mapping. Use Value: 140 Hz bandwidth ensures sub-7 ms latency; 2 mV/°/s sensitivity enables 0.1°/s resolution with 12-bit ADC, matching human hand motion fidelity. | Use Scenario: Joint angle feedback sensor in collaborative robot arm for position correction and collision avoidance. IC Role / Device Role / Timing Role: Analog rate sensor feeding closed-loop servo controller to dampen oscillation during rapid end-effector movement. Use Value: –40°C to +85°C operation supports unheated factory floors; 10,000 g shock rating survives robotic payload drops and maintenance impacts. |
| Pointing Device for Smart TV | Autonomous Mobile Robot (AMR) Chassis |
Use Scenario: Air mouse remote using gesture-based cursor control for media navigation on large-screen displays. IC Role / Device Role / Timing Role: Pitch/yaw rate transducer converting wrist motion into directional velocity commands for UI pointer acceleration. Use Value: Low 6.8 mA active current extends AA battery life beyond 6 months; embedded power-down cuts idle draw to <5 µA. | Use Scenario: Inertial stabilization module correcting chassis yaw drift during SLAM-based indoor navigation. IC Role / Device Role / Timing Role: Analog gyro supplementing wheel odometry to maintain heading accuracy during wheel slip or carpet transitions. Use Value: Factory-calibrated 0.037 %/°C sensitivity drift minimizes temperature-induced heading drift; 1.23 V Vref enables ratiometric ADC scaling without external reference IC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-axis analog gyroscope applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADXRS645 | Single-axis, 2000°/s range, digital SPI output; higher noise floor (0.012 °/s/√Hz) | Requires external MCU for axis fusion and lacks integrated self-test | Select when digital interface and higher range outweigh dual-axis convenience |
| MPU-6050 | 6-axis (3g + 3°/s) MEMS IMU with I²C interface; ±250°/s full scale; integrated DMP processor | Delivers fused orientation output but requires firmware integration and has lower gyro bandwidth (250 Hz) | Select when attitude estimation is needed and analog simplicity is secondary |
Compared with ADXRS645 and MPU-6050, LPY550ALTR uniquely delivers true dual-axis analog rate outputs in a single LGA package with factory-trimmed 1.23 V reference and hardware self-test-enabling immediate integration into analog-signal-chain designs without ADC oversampling or fusion algorithms.
Availability
LPY550ALTR is available at Aetrix Electronics and suitable for gaming peripherals, industrial robotics, smart remote interfaces, and autonomous mobile platforms requiring stable component supply with long-term manufacturability.
Supply support for LPY550ALTR 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, designing and manufacturing microcontrollers, sensors, power ICs, and automotive electronics with vertical fabrication capability.
LPY550ALTR belongs to ST's high-reliability MEMS motion sensor family, engineered specifically for consumer and industrial human-interface applications demanding analog precision, shock resilience, and seamless PCB integration.
FAQ
What is the function of the HP pin on LPY550ALTR?
The HP (High-Pass Filter Reset) pin is a logic-controlled terminal that, when driven high, discharges the external high-pass filter capacitor. This prevents output saturation during large angular transients and ensures fast recovery after overload conditions. It is recommended to assert HP during power-up and after any known large-rate event to maintain baseline stability.
Can LPY550ALTR operate without external filtering components?
Yes - the device includes embedded low-pass filtering with 140 Hz bandwidth. However, external RC networks are required at FILTVDD and VCONT pins to stabilize the internal PLL. For amplified outputs (4xOUTX/Z), shorting OUTX to 4xINX and OUTZ to 4xINZ is mandatory if no external filtering is used; otherwise, signal integrity degrades due to impedance mismatch.
How does the self-test function verify sensor integrity?
The ST pin activates an on-chip electrostatic force that displaces the micromachined driving mass, simulating a known Coriolis response. When enabled, the output shifts by a predictable DC voltage (e.g., ~200 mV at 3 V supply). A measurable, repeatable shift within datasheet limits confirms both mechanical mobility and analog signal chain functionality - no external rotation fixture required.
Is the 1.23 V Vref output buffered and load-capable?
Yes - Vref is internally buffered and specified to drive ≥10 kΩ loads with <1% deviation. It serves as a stable reference for external filter biasing and ADC reference scaling. Connecting capacitive loads >100 nF may cause instability; a 100 nF ceramic capacitor to GND is recommended for noise suppression without compromising regulation.
LPY550ALTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 16-LFLGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Analog
- Axis:
- X (Pitch), Y (Roll)
- Range °/s:
- ±500
- Sensitivity (LSB/(°/s)):
- -
- Sensitivity (mV/°/s):
- 2
- Bandwidth:
- 140Hz
- Output Type:
- Analog Voltage
- Voltage - Supply:
- 2.7V ~ 3.6V
- Current - Supply:
- 6.8 mA
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
LPY550ALTR FAQ
1.How can I place an order for LPY550ALTR through Aetrix?
Please submit a Request for Quotation (RFQ) for LPY550ALTR 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 LPY550ALTR reliable?
The price and inventory of LPY550ALTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPY550ALTR is usually 5 days.
3.What payment methods are accepted for LPY550ALTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPY550ALTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPY550ALTR?
LPY550ALTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPY550ALTR 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 LPY550ALTR?
For technical support, including LPY550ALTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPY550ALTR requirements.
6.How does Aetrix verify that LPY550ALTR is sourced from the original manufacturer or authorized distributors?
All LPY550ALTR 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 LPY550ALTR meets industry standards.
7.What is the process for return or replacement of LPY550ALTR?
All LPY550ALTR units undergo pre-shipment inspection (PSI). If there is an issue with LPY550ALTR, 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 LPY550ALTR part is unused and in its original packaging.
Return procedure for LPY550ALTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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