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Broadcom Thin Film Pyroelectric Dual Channel Sensors

Broadcom / Avago Thin Film Pyroelectric Dual Channel Sensors are infrared (IR) sensors designed for gas detection and other substance concentration measurements. The pyroelectric dual channel sensors feature exceptionally high responsivity, low microphonics, and class-leading thermal and electrical stability. The high-performance dual current mode sensor delivers a signal-to-noise of ~10,000 and presents a fast, stable response over a wide operating frequency range.

The Broadcom / Avago Thin Film Pyroelectric Dual Channel 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
  • Low microphonics
  • Class-leading thermal and electrical stability
  • Signal to noise of ~10,000

Applications

  • Gas detection
  • Substance concentration measurements

Specifications

  • Electrical Characteristics
    • 8.0V Max. Voltage (+V)
    • 2.7V Min. Voltage
    • Output voltage normalized around mid-rail
    • S vib~2μV/g at 10Hz Microphonics
    • ~12ms Time constant
    • –40°C to +85°C Operating temperature
    • –40°C to +110°C Storage temperature
  • Sensor Characteristics
    • 2.6mm square Filter aperture
    • 1000μm x 1000μm Element size
    • TO39 Package
    • 150,000V/W Responsivity
    • 3.5cm x 108cm√Hz/ W D
    • 70μV√Hz Noise

Dimensions

Mechanical Drawing - Broadcom Thin Film Pyroelectric Dual Channel Sensors

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Broadcom Thin Film Pyroelectric Dual Channel Sensors