STMicroelectronics LPR510ALTR

Overview

LPR510ALTR from STMicroelectronics is a dual-axis MEMS gyroscope measuring angular rate along pitch and roll axes with ±100°/s full-scale range, 140 Hz bandwidth, and analog outputs (1× and 4× amplified per axis). It operates from 2.7–3.6 V, supports -40°C to +85°C, and integrates self-test, power-down, and embedded low-pass filtering - deployed in motion-controlled pointing devices and GPS navigation systems.

For engineers reviewing the LPR510ALTR datasheet, LPR510ALTR pinout, LPR510ALTR application, or LPR510ALTR equivalent, key selection criteria include its dual-axis analog output architecture, temperature-stable zero-rate level (1.23 V), sensitivity matching (10 mV/°/s for 4× outputs), and LGA-16 package compatibility with high-shock industrial environments.

Technical Context

The LPR510ALTR implements a Coriolis-based sensing principle using a single micromachined driving mass oscillating continuously; angular rotation induces orthogonal displacement sensed by integrated charge amplifiers and demodulators. Its CMOS interface IC provides two independent analog output channels per axis - one unamplified (±400°/s FS) and one 4× amplified (±100°/s FS).

It embeds a PLL-based phase generator for driving/sensing synchronization, supports external LP/HP filtering via dedicated pins (FILTVDD, VCONT, HP), and features logic-controlled functions: ST (self-test activation), PD (power-down), and HP (high-pass filter reset) - all compatible with standard 3.3 V digital I/O levels.

Key Specifications

Pinout & Package

LPR510ALTR is housed in a 5 mm × 5 mm × 1.5 mm plastic land grid array (LGA-16) package with exposed pad for thermal and mechanical stability. The bottom-view layout includes 16 solder lands arranged in a 4×4 grid, with pin 1 located at top-left corner (marked by chamfered corner).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADXRS645 and MPU-6050, the LPR510ALTR uniquely delivers true dual-axis analog outputs in a single LGA-16 package with no digital interface overhead, making it optimal for analog-centric motion control where simplicity, low latency, and minimal external components are critical.

Availability

LPR510ALTR 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 LPR510ALTR 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 analog, MEMS, power, and microcontroller solutions for industrial, automotive, and consumer markets.

The LPR510ALTR belongs to ST's high-reliability MEMS gyroscope product line, engineered specifically for precision motion sensing in resource-constrained embedded systems where analog output fidelity, temperature stability, and shock resilience are essential.

FAQ

What is the function of the HP pin on the LPR510ALTR?

The HP (High-Pass Filter Reset) pin is a logic-controlled input that resets the external high-pass filter capacitor when driven high. This action clears accumulated DC offset during startup or after large angular transients, ensuring rapid settling of the output baseline. It must be pulsed high briefly at power-on and after any overload condition to maintain accurate zero-rate tracking.

Can both amplified and unamplified outputs be used simultaneously on the same axis?

No - the 4xINX/4xINY pins serve as inputs to the internal 4× amplifier stage, and connecting them to OUTX/OUTY while also using 4xOUTX/4xOUTY creates undefined signal contention. The device supports either the unamplified outputs (OUTX/OUTY) or the amplified outputs (4xOUTX/4xOUTY), not both concurrently on the same axis without external isolation circuitry.

How does the self-test (ST) function verify sensor integrity?

The ST pin activates an electrostatic test force that displaces the micromachined driving mass, emulating a known Coriolis acceleration. When enabled, this produces a predictable DC-level shift in both 4xOUTX and 4xOUTY outputs - typically ~100 mV - confirming mechanical mobility and signal chain gain accuracy without external rotation equipment.

Why must pins 14 and 15 (Res) be connected to Vdd?

Pins 14 and 15 are reserved and internally undefined; STMicroelectronics specifies they must be externally tied to Vdd to ensure stable internal biasing and prevent floating nodes that could induce leakage currents or erratic behavior. Leaving them unconnected violates the recommended operating conditions and may cause output instability or increased power consumption.