STMicroelectronics LPY410ALTR

Overview

LPY410ALTR from STMicroelectronics is a dual-axis MEMS gyroscope measuring angular rate along pitch and yaw axes with ±100 dps full-scale range, 560 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-controlled pointing devices and GPS navigation systems.

For engineers reviewing the LPY410ALTR datasheet, LPY410ALTR pinout, LPY410ALTR application, or LPY410ALTR equivalent, key selection considerations include its dual-axis analog output architecture, temperature-stable zero-rate level (±0.03 dps/°C drift), 0.014 dps/√Hz rate noise density, and LGA-28 package compatibility with industrial motion tracking and human-interface device designs.

Technical Context

The LPY410ALTR uses a single micromachined driving mass oscillating continuously and reacting via the Coriolis effect to applied angular rates. Its CMOS interface IC provides two independent analog output channels per axis-one unamplified (±400 dps FS, 2.5 mV/dps sensitivity) and one 4× amplified (±100 dps FS, 10 mV/dps).

A built-in PLL synchronizes driving and sensing interfaces, requiring external RC components on VCONT and FILTVDD pins. The device implements configurable power states (normal, sleep, power-down) via dedicated SLEEP/PD and ST pins, with supply current ranging from 1 µA (power-down) to 6.8 mA (active).

Key Specifications

Pinout & Package

The LPY410ALTR is housed in a 4 mm × 5 mm × 1 mm plastic land grid array (LGA-28) package with exposed thermal pad, compatible with standard reflow soldering per JEDEC J-STD-020 and RoHS-compliant ECOPACK® construction.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADXRS649YZ and LPY420AL, the LPY410ALTR offers optimal balance of low-noise dual-axis analog output, minimal system-level component count, and drop-in compatibility with existing ST gyroscope layouts-making it ideal for cost-sensitive, battery-operated motion UIs where ±100 dps resolution is sufficient.

Availability

LPY410ALTR is available at Aetrix Electronics and suitable for GPS navigation systems, motion tracking platforms, pointing devices, and industrial robotics requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for LPY410ALTR 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 products for industrial, automotive, and consumer markets.

The LPY410ALTR belongs to ST's MEMS gyroscope product line, engineered specifically for high-stability, low-power angular rate sensing in human-interface and navigation applications-leveraging ST's proprietary LGA packaging and Coriolis-effect transduction technology.

FAQ

What is the function of the HP pin (Pin 24) on the LPY410ALTR?

The HP (High-Pass Filter Reset) pin resets an optional external high-pass filter connected to the analog outputs. When driven high, it clears residual DC offset buildup-critical after power-up or overload events. In normal operation, HP must be held low (GND). This feature ensures rapid settling of output signals during dynamic motion transitions without requiring software recalibration.

Can the LPY410ALTR operate with a 5 V supply?

No-the LPY410ALTR is strictly rated for 2.7 V to 3.6 V supply voltage. Absolute maximum rating is 6 V, but operation above 3.6 V violates specifications and risks permanent damage. Its internal reference (Vref = 1.5 V), amplifier rails, and PLL circuitry are optimized for 3 V nominal operation; using 5 V would exceed internal voltage tolerances and invalidate all electrical characteristics.

How does the self-test function verify mechanical integrity?

The self-test applies an electrostatic force to the MEMS proof mass, inducing a known Coriolis-like displacement. This produces a predictable 250 mV DC-level shift on the analog outputs-measurable with a voltmeter or ADC. If the observed shift falls within ±20% of 250 mV, both the mechanical structure and signal conditioning chain are confirmed functional, eliminating need for physical rotation during production testing.

Why are there separate amplified and non-amplified outputs for each axis?

Dual-output architecture provides design flexibility: the 4× amplified outputs (10 mV/dps) simplify interface to low-resolution ADCs in cost-sensitive systems, while non-amplified outputs (2.5 mV/dps, ±400 dps FS) preserve dynamic range for applications needing wider angular measurement-such as initial coarse alignment before switching to high-resolution tracking mode.