Pyroelectric infrared sensor PYD 5731

Product Overview
With a 4.7 mm diameter the PYD 5731 Miniature Dual-Element DigiPyro® is one of the smallest designs in the Excelitas Pyrodetector portfolio. The detector integrates two elements in series inside a TO-46 metal housing with an optical window. As part of the DigiPyro® family, it incorporates internal digitization that converts element signals into a 14-bit digital output via the Direct Link interface. The PYD 5731 is optimized for compact optics and miniaturized product designs and provides high EMI immunity.

Features

• Integrated 14-bit digitization via internal circuitry
• High-responsivity ceramic pyroelectric elements
• Dual-element configuration (1.4 × 0.4 mm² elements) in series
• 99° field-of-view (horizontal) / 88° (vertical)
• Miniature TO-46 metal housing with optical window for improved EMI immunity
• Suitable for advanced motion detection algorithms

Applications

• Mid-distance motion detection (with appropriate lens)
• Energy-saving lighting and HVAC control
• Intrusion and presence alarm systems
• Horizontal mounting in compact devices and fixtures

Specifications

• Model family: DigiPyro® miniaturized pyroelectric detector
• Diameter: 4.7 mm
• Case height: 3.3 mm
• Elements: Dual-element in series, element size 1.4 × 0.4 mm²
• Responsivity: 11 kV/W (typical)
• Noise: 10 counts (typical), 27 counts (maximum)
• Operation requirements: 2.7–3.6 V / 10 µA
• Housing with optical window: TO-46 metal housing
• Field-of-view (horizontal/vertical): 99° / 88°
• Interface: Direct Link digital interface (14-bit digital output from integrated circuitry)
• Recommended use: compact optics and designs requiring high EMI immunity