Pyro-electric motion sensor PYQ 1548

indoorceiling-mountedhigh-sensitivity

Overview
Excelitas' PYQ 1548 is a quad-element low-power pyroelectric motion sensor in the DigiPyro family. Designed for battery-operated devices, it operates from a 1.8 V supply and targets extended remote motion detection with minimal current draw.

Details
The PYQ 1548 supports a 1.8 V supply voltage and ultra-low standby current. A configurable wake-up/sleep feature reduces system-level power consumption and extends battery life. The detector offers selectable band-pass filtering and a pulse-counting option. Element sizes include standard 1 × 1 mm² with an option for smaller 0.8 × 0.8 mm² elements for compact lenses and shorter detection ranges.

Features

• Integrated digitization
• Motion detection unit with interrupt function
• Low-power consumption: 3 µA at 1.8 V (typical)
• Ceramic pyroelectric elements with high responsivity
• Quad-element configuration with 1 × 1 mm² (option: 0.8 × 0.8 mm²) elements
• Field-of-view: 119° (140°)
• TO-5 metal housing for improved EMI immunity
• Designed for straightforward integration into product designs

Applications

• Mid- to short-range motion detection (with lens)
• Energy-saving presence detection
• Intrusion and alarm systems
• Ceiling-mounted sensors
• Battery-powered devices and IoT endpoints

Technical specifications

• Responsivity: 6.5 (10.2) kV/W (typical)
• Noise: 6 (9) digits (typ), 24 (31) digits (max)
• Operating power: 1.8–3.6 V / 3 µA
• Housing with optical window: TO-5
• PYQ 1548 field-of-view (horiz/vert): 119° (140°) / 119° (140°)