Broadcom AFBR-S6EPY eZPyro™ Pyroelectric IR Sensors

Broadcom^® AFBR-S6EPY eZPyro™ Pyroelectric Infrared (IR) Sensors are thin film digital pyroelectric sensors that combine high-quality sensors with a high level of configurable electronic integration. These pyroelectric SMD sensors feature high sensitivity combined with fast response times to ensure rapid and accurate detection of gases/flames. The pyroelectric IR sensors also feature ultra-low power, sleep modes, wake-up-by signal, fast switch-on, open API, and EMI immunity. These sensors communicate through industry-standard I²C, which enables plug-and-play connectivity to microcontrollers and allows easy tuning and calibration.

The AFBR-S6EPY12111B and AFBR-S6EPY12121B sensors come on a breakout PCB. The AFBR-S6EPY12111B sensor is the rigid or flexible connection for easy prototyping which is equipped with a 5μm long pass filter. The AFBR-S6EPY12121B is an out-of-the-box sensor readout tool that is equipped with a 2.2μm long pass filter with a 2.5μm to 6μm filter bandwidth range. Typical applications include gas sensing, flame detection, motion detection, and gesture recognition.

Features

Small SMD package
Fast response times
Lower system cost due to integrated functions
Plug-and-play connectivity using the I²C bus interface and daisy-chaining sensors
Ultra-low power, sleep modes, and wake-up by signal
Fully configurable independent channel
Reducing emitter on time and thus system power consumption
High dynamic range allows the detection of small and large flames, nearby or over larger distances

High-quality thin film sensor elements offering short response times and high sensitivity to enable further system power savings through lower IR source duty cycles
EMI immunity
Extensive development supports the ecosystem
Open API
Wide development tools array

Specifications

Electrical characteristics:
- 1.75V to 3.6V supply voltage range
- 1μA to 23μA supply current (typical)
- 15bit ΔΣ ADC @1ksp
- -40°C to 85°C operating temperature range

Sensor characteristics:
- d = 1.65mm filter aperture
- 0.64mm² x 0.64mm²element size
- 10ms time constant (10Hz to 20Hz peak)

Applications

Gas sensing:
- CO₂, CO, CH₄, NO, anesthetics, refrigerants, and exhaust gases
Flame detection:
- CO₂ and H₂O gases from hydrocarbon or hydrogen flames

Food and oil analysis:
- Sugars, proteins, fats, base, and acidic numbers
Motion detection
Gesture recognition

Broadcom AFBR-S6EPY eZPyro™ Pyroelectric IR Sensors

Features

Specifications

Applications

Single Device Block Diagram

Circuit Diagram

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