June 19, 2026 – Geneva, Switzerland – ST Expands Analog Portfolio
STMicroelectronics has announced the STHS34PF80, a dedicated signal conditioning IC for pyroelectric infrared sensors. The new IC features ultra-low power consumption of just 1.5µA, making it ideal for battery-powered motion sensors.
Key Features
- Power consumption: 1.5 µA in active mode
- Supply voltage: 1.7V to 3.6V
- Gain range: 40-80 dB programmable
- ADC resolution: 16-bit sigma-delta
- Interface: I2C (up to 1 MHz)
- Package: 2.5mm × 2.5mm QFN
- Price: $0.89 (1,000 units)
Integrated Features
The STHS34PF80 integrates all analog front-end components needed for PIR sensors, including programmable gain amplifier, filters, ADC, and motion detection logic. An on-chip interrupt output can wake a microcontroller when motion is detected.
Target Applications
- Battery-powered wireless motion sensors
- Energy-harvesting IoT devices
- Smart home occupancy sensors
- Security systems
- Automatic lighting controls
“The STHS34PF80 reduces PIR sensor power consumption by 70% compared to discrete solutions,” said Luca Radaelli, Marketing Director at ST. “This enables multi-year battery life for wireless motion sensors.”
Availability
The STHS34PF80 is available for sampling now, with volume production scheduled for Q4 2026. Evaluation boards are available for $49.