STMicroelectronics LPY5150ALTR

Overview

LPY5150ALTR from STMicroelectronics is a dual-axis MEMS gyroscope measuring angular rate along pitch and yaw axes, with ±1500°/s full-scale range, 140 Hz bandwidth, analog absolute-rate outputs (both 1× and 4× amplified), and operation from 2.7 V to 3.6 V across –40 °C to +85 °C - used in motion-sensing pointing devices and gaming controllers.

For engineers reviewing the LPY5150ALTR datasheet, LPY5150ALTR pinout, LPY5150ALTR application, or LPY5150ALTR equivalent, key selection considerations include its dual-axis analog output architecture, embedded self-test and power-down functions, LGA-16 package compatibility, and temperature-stable zero-rate level (±0.25 °/s/°C drift) for precision motion interface design.

Technical Context

The LPY5150ALTR integrates a single micromachined driving mass operating on the Coriolis principle, with separate charge amplifiers and demodulators per axis. Its analog signal chain includes embedded low-pass filtering (140 Hz –3 dB point) and optional external high-pass reset via HP pin.

It uses a PLL-based phase generator to synchronize actuation and sensing, requiring external RC components on FILTVDD and VCONT pins. Output scaling is non-ratiometric: sensitivity is 0.67 mV/°/s (4× amplified) and 0.167 mV/°/s (not amplified), with fixed 1.23 V reference and zero-rate level.

Key Specifications

Pinout & Package

LGA-16 (5 mm × 5 mm × 1.5 mm) land grid array package with exposed pad; RoHS-compliant ECOPACK® construction; requires JEDEC J-STD-020C-compliant reflow profile.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADXRS645 and MPU-6050, the LPY5150ALTR delivers purpose-built dual-axis analog rate outputs with minimal BOM count, no host MCU dependency for basic motion capture, and superior power efficiency for battery-constrained pointing devices.

Availability

LPY5150ALTR is available at Aetrix Electronics and suitable for gaming peripherals, motion-enabled remotes, industrial HMI pendants, and robotics teach pendants requiring stable component supply, consistent LGA-16 footprint compatibility, and long-term production continuity.

Supply support for LPY5150ALTR 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 automotive chips with vertical fabrication capability.

The LPY5150ALTR belongs to ST's MEMS motion sensor product line, engineered specifically for high-stability, low-power angular rate measurement in consumer and industrial human-interface applications - emphasizing analog simplicity, robust packaging, and factory-calibrated performance.

FAQ

What is the function of the HP pin on the LPY5150ALTR?

The HP (High Pass Filter Reset) pin is a logic-controlled terminal that, when driven high, resets the external high-pass filter capacitor. This action clears accumulated DC offset during overload or startup conditions, ensuring faster settling and accurate baseline restoration. It is recommended to assert HP at power-on and after large transient rotations.

How does the self-test feature verify sensor functionality?

The self-test applies an electrostatic force to the micromachined driving mass, emulating a known Coriolis acceleration. When ST pin is high, the output shifts by a predictable DC voltage (e.g., ~1.0 V change on 4xOUTX). Measuring this shift confirms mechanical integrity of the MEMS structure and correct operation of the analog signal chain - no external rotation required.

Can the LPY5150ALTR operate without external filtering components?

Yes - the device includes an embedded 140 Hz low-pass filter. However, external RC networks on FILTVDD/VCONT pins are mandatory for PLL stability. For amplified outputs (4xOUTX/Z), pads 4–5 and 9–10 must be shorted if no external filtering is used; for non-amplified outputs, pads 5 and 9 should be tied to Vref to prevent floating inputs.

What is the significance of the non-ratiometric sensitivity specification?

Non-ratiometric means the sensitivity (mV/°/s) and zero-rate level (1.23 V) do not scale with supply voltage. This ensures consistent output scaling and DC baseline regardless of Vdd variation between 2.7 V and 3.6 V - critical for accurate motion interpretation in systems with unregulated or battery-decaying supplies.