STMicroelectronics LPR4150AL

Overview

LPR4150AL from STMicroelectronics is a dual-axis MEMS gyroscope measuring angular rate along pitch and roll axes with ±1500 dps full-scale range, 140 Hz bandwidth, and analog absolute-rate outputs (both amplified 4× and non-amplified). It operates from 2.7 V to 3.6 V over −40 °C to +85 °C and is used in motion-sensing user interfaces for gaming controllers and robotics.

For engineers reviewing the LPR4150AL datasheet, LPR4150AL pinout, LPR4150AL application, or LPR4150AL equivalent, key selection considerations include its dual analog output architecture (OUTX/OUTY + 4xOUTX/4xOUTY), embedded self-test and sleep/power-down modes, temperature-stable zero-rate level (±0.25 dps/°C drift), and LGA-28 package integration requirements.

Technical Context

The LPR4150AL integrates a single micromachined oscillating mass operating on the Coriolis principle, with CMOS signal conditioning delivering two independent analog voltage outputs per axis. Its sensing element is factory-trimmed at 3 V and features non-ratiometric sensitivity (0.67 mV/dps for 4× outputs) and zero-rate level (1.5 V).

It embeds configurable power management: SLEEP/PD and ST pins control four operating modes (Normal, Sleep, Power-down, Self-test) via logic-level inputs; HP pin enables external high-pass filter reset; VCONT/FILTVDD pins support PLL loop filtering with external RC components.

Key Specifications

Pinout & Package

The LPR4150AL is housed in a 4 mm × 5 mm × 1 mm plastic land grid array (LGA-28) package with exposed pad for thermal and mechanical stability. Pin layout follows a 4×7 grid; pin 1 is marked by a corner cutout on the top surface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADXRS649 and LPY410AL, the LPR4150AL uniquely delivers true dual-axis analog outputs in one package, eliminating inter-device alignment errors and reducing BOM count-critical for compact gaming peripherals and HMI devices where analog simplicity and size efficiency dominate.

Availability

LPR4150AL is available at Aetrix Electronics and suitable for gaming controllers, pointing devices, industrial robotics, and human-machine interface systems requiring stable component supply, extended temperature operation, and analog motion-sensing integration.

Supply support for LPR4150AL 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 electronics with vertical fabrication capability.

The LPR4150AL belongs to ST's MEMS motion sensor product line, engineered specifically for cost-sensitive, low-power consumer and industrial motion-tracking applications requiring analog output fidelity and robust environmental performance.

FAQ

What is the function of the HP pin on the LPR4150AL?

The HP (High-Pass Filter Reset) pin is an active-high logic input that resets external high-pass filters connected to the analog outputs. When driven high, it clears DC offset accumulation caused by low-frequency drift, ensuring accurate baseline restoration after power-up or overload events. It must be pulsed high briefly at initialization per Section 4.4 of the datasheet.

How does the self-test feature verify mechanical integrity?

The self-test applies an electrostatic force to the MEMS mass via the ST pin, inducing a known Coriolis-like displacement. This causes a measurable 250 mV (typical) DC shift in the output voltage-verifying both mechanical suspension compliance and signal chain gain accuracy without external rotation. The test is valid only when Vdd is stable and temperature is within operating range.

Can the LPR4150AL operate with a 5 V supply?

No-the LPR4150AL is rated for 2.7 V to 3.6 V supply only. Absolute maximum rating is 6 V, but operation above 3.6 V violates electrical specifications and risks parametric failure or accelerated aging. External level-shifting or LDO regulation is required if system rail is 5 V.

Why are pins 5 and 16 labeled 4xINX and 4xINY?

Pins 5 and 16 are inputs to the internal 4× amplifiers-not outputs. When using non-amplified outputs (OUTX/OUTY), these pins must be tied to Vref (1.5 V) to disable amplifier biasing. If 4× outputs are used, they must be shorted to OUTX/OUTY respectively per Figure 3 application schematic to avoid floating nodes and signal distortion.