Broadcom Thin Film Pyroelectric Flame Sensors

Broadcom / Avago Thin Film Pyroelectric Flame Sensors are infrared flame detectors with high responsivity and a wide field of view of typically 100° (*subject to filter band pass specification). The flame sensors feature class-leading rapid recovery from thermal and electrical shocks (typically < 1-second downtime). In addition, the sensors offer excellent signal-to-noise at the signature 8Hz to 10Hz flicker range of a flame and achieve accurate discrimination of flame sources in triple I_R flame detection systems.

The Broadcom / Avago Thin Film Pyroelectric Flame Sensors element is built into a low noise circuit with an internal CMOS op amp with a 10GΩ feedback resistor outputting a voltage signal centered around half the supply rail.

Features

High responsivity
Wide field of view of typically 100°
Class-leading rapid recovery from thermal and electrical shocks

Specifications

Sensor Characteristics
- 5.2mm x 4.2mm Filter aperture
- 1000μm x 1000μm Element size
- TO39 Package
- 150,000 V/W Responsivity
- 3.5cm x 108cm√Hz/ W D
- Mean 70μV√Hz Noise
- Typical 100° Field of View

Electrical Characteristics
- 8.0V Max. Voltage (+V)
- 2.7V Min. Voltage (+V)
- Output voltage normalized around mid-rail
- S vib~2μV/√Hz at 10Hz Microphonics
- ~12ms Time constant
- -40°C to +85°C Operating temperature
- -40°C to +110°C Storage temperature
- Op-Amp with 10GΩ feedback resistor
- As per the Filters Available table