STMicroelectronics LPY430AL

Overview

LPY430AL from STMicroelectronics is a dual-axis MEMS gyroscope measuring angular rate along pitch and yaw axes with ±300 dps full-scale range, 140 Hz bandwidth, and analog outputs (amplified and non-amplified) for both axes. It operates from 2.7 V to 3.6 V, supports -40 °C to +85 °C operation, and integrates self-test, sleep mode, and embedded low-pass filtering - used in motion-sensing remote controllers and GPS navigation systems.

For engineers reviewing the LPY430AL datasheet, LPY430AL pinout, LPY430AL application, or LPY430AL equivalent, key selection considerations include its dual-axis analog output architecture, temperature-stable sensitivity (3.33 mV/dps amplified), low-power sleep mode (2.1 mA), and LGA-28 package compatibility with high-shock industrial environments.

Technical Context

The LPY430AL employs a single micromachined driving mass oscillating continuously and reacting via the Coriolis effect to applied angular rates. Its CMOS interface IC conditions and outputs analog voltage signals - two per axis (OUTX/4xOUTX and OUTZ/4xOUTZ) - with factory-trimmed sensitivity and zero-rate level referenced to 1.5 V.

It embeds a PLL-based timing system requiring external RC components on VCONT and FILTVDD pins for phase synchronization, and supports three operating modes (normal, sleep, power-down) controlled by ST and SLEEP/PD pins - enabling rapid wake-up and µA-level shutdown current.

Key Specifications

Pinout & Package

LGA-28 (4 mm × 5 mm × 1 mm) land grid array package with exposed pad; RoHS-compliant ECOPACK® construction, JEDEC J-STD-020 soldering qualified.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-axis analog gyroscope applications.

Compared with ADXRS645 and LPY430AH, the LPY430AL uniquely balances dual-axis analog simplicity, built-in power management, and ±300 dps range - making it optimal for cost-sensitive, battery-operated motion interfaces where rapid integration and minimal BOM count are critical.

Availability

LPY430AL is available at Aetrix Electronics and suitable for motion-sensing remote controllers, GPS dead-reckoning modules, and industrial robotic joint feedback systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LPY430AL 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, Switzerland, designing and manufacturing microcontrollers, sensors, power ICs, and analog/mixed-signal devices for industrial, automotive, and consumer markets.

The LPY430AL belongs to ST's MEMS motion sensor product line, engineered specifically for compact, low-power angular rate measurement in human-interface and navigation applications - leveraging ST's high-volume LGA packaging expertise and proven accelerometer manufacturing infrastructure.

FAQ

What is the function of the HP pin on the LPY430AL?

The HP (High-pass Filter Reset) pin resets an optional external high-pass filter by applying a logic high signal. This clears DC offset buildup after power-on or mechanical overload, ensuring accurate zero-rate baseline recovery. It must be driven actively - leaving it floating may cause unpredictable output drift during startup sequences.

How does the self-test feature verify sensor integrity?

The ST pin activates an electrostatic force that displaces the internal MEMS mass, generating a predictable 250 mV DC-level shift at the output pins. This confirms both mechanical mobility of the sensing element and correct operation of the analog signal chain - no external stimulus or instrumentation is needed for functional validation.

Can the LPY430AL operate with only one axis enabled?

Yes - the device supports independent use of either X or Z axis outputs. Unused axis outputs can remain unconnected, and corresponding 4xIN pins should be tied to Vref (1.5 V) if their amplified outputs are not used. Power consumption remains unchanged since internal oscillator and bias circuits operate for both axes simultaneously.

What external components are mandatory for stable LPY430AL operation?

Mandatory components include: 100 nF ceramic + 10 µF aluminum decoupling capacitors near Vdd pins; 2.2 kΩ resistor and 10 nF capacitor on VCONT; 1.7 kΩ resistor and 10 nF capacitor on FILTVDD. These implement the PLL loop filter - omission causes unstable oscillation and erratic output due to loss of driving frequency synchronization.