STMicroelectronics LIS352ARTR

Overview

LIS352ARTR from STMicroelectronics is a 3-axis ±2 g analog-output MEMS accelerometer in LGA-14 package, featuring ratiometric voltage outputs per axis (Voutx/Vouty/Voutz), embedded multiplexer for single-channel A/D conversion, and self-test functionality. It delivers 100 µg/√Hz noise density, 2.0 kHz resonant frequency, and operates from 2.16–3.6 V supply with 0.3 mA active current - used in free-fall detection, tilt sensing, and gaming input devices.

For engineers reviewing the LIS352ARTR datasheet, LIS352ARTR pinout, LIS352ARTR application, or LIS352ARTR equivalent, key selection considerations include its ratiometric output scaling, 32 kΩ output impedance requiring ≥2.5 nF external filtering, multiplexer control via S0/S1 logic pins, and factory-trimmed zero-g offset (±6% of Vdd/2) and sensitivity (±5% of 0.145×Vdd).

Technical Context

The LIS352ARTR integrates a surface-micromachined capacitive sensing element with a CMOS interface IC using correlated double sampling (CDS) to suppress 1/f noise and offset. Its analog signal chain includes three independent sample-and-hold circuits feeding dedicated channel outputs and a 4-to-1 analog multiplexer routing Voutx/Vouty/Voutz/Aux_in to the shared Vout pin.

Operation relies on ratiometric behavior: zero-g level (Vdd/2 ±6%) and sensitivity (0.145×Vdd ±5% V/g) scale linearly with supply voltage, enabling error cancellation in ADC chains. Bandwidth is set externally via Cload and the fixed 32 kΩ Rout, supporting configurable low-pass filtering from 1 Hz to 2.0 kHz.

Key Specifications

Pinout & Package

Package: LGA-14 (3.0 × 5.0 × 0.9 mm, 0.8 mm pitch), RoHS-compliant ECOPACK® plastic land grid array with exposed die pad for thermal/mechanical stability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 3-axis analog-output accelerometer applications.

Compared with ADXL335BRZ and MMA7361L, the LIS352ARTR offers unique integration of multiplexing, self-test, and factory-trimmed ratiometric outputs - reducing component count and validation effort in portable consumer designs requiring guaranteed parametric performance across temperature.

Availability

LIS352ARTR is available at Aetrix Electronics and suitable for free-fall detection, tilt sensing, and gaming input devices requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for LIS352ARTR 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-grade components with vertical fabrication capability.

The LIS352ARTR belongs to ST's "piccolo" family of miniaturized MEMS accelerometers - engineered specifically for space-constrained portable electronics needing low-power analog sensing with built-in diagnostics and factory calibration.

FAQ

What is the function of the Aux_in pin on the LIS352ARTR?

The Aux_in pin serves as an auxiliary analog input that can be routed to the multiplexed Vout pin when S1 and S0 are both high (per Table 7). This allows integration of an external sensor signal-such as temperature or voltage-into the same ADC channel used for accelerometer data, reducing system component count and simplifying firmware handling of multi-sensor inputs.

How does the ratiometric output affect ADC design choices?

Because zero-g level and sensitivity scale linearly with Vdd, using the same supply for both LIS352ARTR and the ADC's reference voltage eliminates gain and offset errors caused by supply variation. This enables direct connection to SAR or sigma-delta ADCs without external gain/offset compensation, provided the ADC reference is derived from Vdd and the analog input range matches the ratiometric output swing (e.g., 0.2×Vdd to 0.8×Vdd for ±2 g at 3.3 V).

Can the LIS352ARTR operate reliably after exposure to 10000 g shock?

Yes-the LIS352ARTR is specified for 10000 g mechanical shock survivability for 0.1 ms pulses in both powered and unpowered states. This rating was validated per JEDEC standards and reflects robust MEMS structure design with protective cap and anchor geometry. Post-shock functionality is confirmed via self-test (ST pin activation), which produces a measurable 60–900 mV output shift per axis if the sensor remains intact.

Why is a minimum 2.5 nF capacitor required on each Voutx/Vouty/Voutz pin?

The 32 kΩ internal output impedance forms an RC low-pass filter with external capacitance; a 2.5 nF load yields ~5 kHz cutoff, ensuring stability and preventing oscillation while staying below the 2.0 kHz sensing element resonant frequency. Using smaller capacitors risks aliasing and measurement error due to insufficient anti-aliasing, especially when sampling above 1 kHz, and may cause output phase shift affecting dynamic response fidelity.