STMicroelectronics LPY5150AL

Overview

LPY5150AL 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, and analog voltage outputs (0.67 mV/°/s sensitivity on 4× amplified channels). It operates from 2.7–3.6 V over −40 °C to +85 °C and is used in motion-sensing gaming controllers and industrial robotics for real-time orientation tracking.

For engineers reviewing the LPY5150AL datasheet, LPY5150AL pinout, LPY5150AL application, or LPY5150AL equivalent, key selection criteria include dual-axis analog output architecture, integrated self-test and power-down functions, LGA-16 package compatibility, and temperature-stable zero-rate level (±0.25 °/s/°C drift) for precision motion control systems.

Technical Context

The LPY5150AL implements a Coriolis-effect-based sensing element with a single oscillating driving mass and integrated CMOS interface IC. Its analog signal chain includes embedded low-pass filtering (140 Hz −3 dB), selectable 1× or 4× gain paths per axis, and independent high-pass filter reset capability via the HP pin.

It features a PLL-based synchronization circuit requiring external RC components on FILTVDD and VCONT pins, and supports two distinct output configurations: unamplified (OUTX/OUTZ) and buffered 4× amplified (4xOUTX/4xOUTZ), each with dedicated input terminals (4xINX/4xINZ) for external filtering.

Key Specifications

Pinout & Package

LPY5150AL is housed in a 5 mm × 5 mm × 1.5 mm plastic land grid array (LGA-16) package with bottom-side solder pads. The package supports automated reflow assembly and meets JEDEC J-STD-020C thermal requirements.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADXRS649 and MPU-6050, LPY5150AL uniquely delivers native dual-axis analog outputs in a compact LGA-16 package with factory-trimmed zero-rate stability-reducing system-level calibration effort and simplifying signal chain design for motion-centric human interface applications.

Availability

LPY5150AL is available at Aetrix Electronics and suitable for gaming controllers, industrial robotics, and remote control interfaces requiring stable component supply, consistent parametric performance across production lots, and long-term lifecycle support.

Supply support for LPY5150AL 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, with R&D and manufacturing operations across Europe, Asia, and the Americas, serving automotive, industrial, and consumer markets.

The LPY5150AL belongs to ST's MEMS motion sensor product line, designed specifically for high-accuracy, low-power angular rate measurement in human-interface and motion-control applications where analog output simplicity and temperature stability are critical.

FAQ

What is the purpose of the HP pin on LPY5150AL?

The HP (High Pass Filter Reset) pin resets external high-pass filter capacitors to prevent output saturation during large transient rotations. When driven high, it discharges the capacitor to restore baseline quickly-critical for maintaining accuracy after sudden movements like controller flicks or robotic arm jerks. It is recommended to assert HP at power-on and after known over-range events.

How does the self-test function verify sensor integrity?

The ST pin activates an electrostatic test force that moves the internal seismic mass, emulating a known Coriolis acceleration. This induces a predictable DC-level shift in both 4xOUTX and 4xOUTZ outputs (typically ~100 mV). Measuring this shift confirms mechanical mobility and signal chain gain/offset integrity without external motion or calibration fixtures.

Why are there separate 4xINX and 4xINZ pins?

4xINX and 4xINZ serve as dedicated inputs for external low-pass or high-pass filters placed before the internal 4× amplifier stage. They allow independent filtering of each axis prior to amplification-enabling custom bandwidth shaping per axis while preserving signal-to-noise ratio. Shorting OUTX to 4xINX (or OUTZ to 4xINZ) bypasses external filtering when not needed.

Can LPY5150AL operate without external PLL components?

No. The FILTVDD and VCONT pins require external RC networks (e.g., 1 MΩ + 4.7 µF on FILTVDD, 33 kΩ + 2.2 µF on VCONT) to configure the internal PLL loop filter. Omitting these components causes unstable driving frequency, leading to erratic output, increased noise, and failure to meet specified bandwidth or sensitivity. ST provides recommended values in Figure 3 of the datasheet.