STMicroelectronics LY330ALH

Overview

LY330ALH from STMicroelectronics is a single-axis analog yaw-rate gyroscope based on MEMS technology, delivering ±300 dps full-scale range, 3.752 mV/dps sensitivity, and 140 Hz bandwidth in an LGA-10 (3×5×1 mm) package. It operates from 2.7 V to 3.6 V over −40 °C to +85 °C and is used for motion sensing in pointing devices and GPS navigation systems.

For engineers reviewing the LY330ALH datasheet, LY330ALH pinout, LY330ALH application, or LY330ALH equivalent, key selection criteria include analog output linearity, zero-rate level stability (1.5 V ±0.02 dps/°C drift), self-test functionality, sleep/power-down mode control via dedicated pins, and LGA-10 mechanical compatibility with high-shock survivability (10,000 g).

Technical Context

The LY330ALH integrates a resonating silicon mass driven continuously and detects Coriolis-induced displacement via capacitive sensing. Its CMOS interface provides ratiometric-independent analog voltage output (OUTZ), with factory calibration at 3 V and trimming for sensor-to-IC matching.

A built-in PLL synchronizes driving and sensing circuits, while external RC components on VCONT configure a low-pass filter. Operating modes-normal, sleep, self-test, and power-down-are selected via logic states on ST and SLEEP/PD pins, enabling <2.2 mA sleep current and <5 µA power-down current.

Key Specifications

Pinout & Package

LGA-10 (3×5×1 mm) plastic land grid array package with exposed pad for mechanical robustness and thermal performance; RoHS-compliant and qualified per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADXRS649 and MPU-6050, the LY330ALH delivers optimized analog yaw sensing with minimal external components, lower power in sleep mode, and direct compatibility with existing 3.3 V ADC front-ends-making it ideal for cost-sensitive, low-latency motion interfaces.

Availability

LY330ALH is available at Aetrix Electronics and suitable for pointing devices, GPS-aided navigation systems, and industrial robotics requiring stable component supply, consistent LGA-10 packaging, and guaranteed −40 °C to +85 °C operation.

Supply support for LY330ALH 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, specializing in MEMS sensors, microcontrollers, and power management ICs with over 30 years of industrial reliability.

The LY330ALH belongs to ST's high-stability analog gyroscope product line, engineered specifically for motion-enabled human interface devices and navigation aids where analog simplicity, thermal robustness, and shock resilience are critical.

FAQ

What is the recommended decoupling for LY330ALH?

ST specifies a 1 µF ceramic capacitor in parallel with a 100 nF capacitor placed as close as possible to Pins 1 and 9 (Vdd). An additional 470 nF capacitor is required on Pin 3 (VCONT) with a 10 kΩ resistor to implement the PLL low-pass filter, per Figure 3 in the datasheet.

How does the self-test function verify sensor health?

When ST pin is pulled high, an electrostatic force moves the MEMS mass, inducing a known DC-level shift (~400 mV) in OUTZ. If the observed shift falls within datasheet tolerance and returns to baseline after deactivation, both mechanical structure and analog readout circuitry are confirmed functional.

Can LY330ALH operate from a 3.3 V LDO without level-shifting?

Yes. The LY330ALH is fully specified for 2.7–3.6 V operation, and its analog output (OUTZ) swings between ~0.2×Vdd and ~0.8×Vdd. At 3.3 V supply, output ranges from ~0.66 V to ~2.64 V-compatible with most 3.3 V SAR ADCs without scaling or level-shifting.

Is the exposed pad on the LGA-10 package electrically connected?

No. The exposed pad is a mechanical thermal slug only, not electrically tied to any internal node. ST recommends soldering it to a large PCB copper pour for thermal dissipation and mechanical anchoring, but it must remain floating or grounded solely for thermal purposes-not as a signal or power return path.