ePY12XX1 (SMD)
- (Rev. 3.4)
PRELIMINARY
ezPyro
TM
I
2
C Pyroelectric Infrared Flame Sensor (SMD)
Introduction
The ezPyro range of thin film digital pyroelectric IR sensors
for flame detection combines high quality sensors with a
high level of configurable electronic integration in a small
SMD package. High sensitivity combined with fast response
times ensure rapid and accurate flame detection. The high
dynamic range allows detection of small and large flames,
nearby or over larger distances. These sensors integrate a
digital, current mode read-out offering high responsivity
over the full frequency range of flame flicker (3-30 Hz).
Programmable gain and filtering offer maximum flexibility in
system design. Industry standard I
2
C communication
enables plug-and-play connectivity to microcontrollers and
allows easy tuning and calibration. ezPyro sensors are very
stable over time ensuring a long and maintenance-free
operational lifespan. Various optical filter options are
available. These sensors can also be daisy-chained to
allow synchronized sampling across devices and offer various low power modes.
Sensor Characteristics
Filter aperture
Element size
SMD Package
D* (typ.)
1
NEP (typ.)
1
Time Constant
Field of View
d = 1.65 mm
0.64 x 0.64 mm
2
5.65 x 3.7 x 1.55 mm
2.5 x 10
8
cm√Hz/ W
2.7 x 10
-10
W/√Hz
~10ms (10-20 Hz peak)
~90°
Electrical Characteristics
Supply voltage
Supply current (typ.)
Digital I/O
ADC
Operating Temperature
Storage Temperature
Sensor read-out
Configurable
1.75 to 3.6 V
1 to 23
μA
I
2
C (FM+ compatible)
15bit ΔΣ ADC @1ksp
-40 to +85 °C
-40 to +110 °C
Current mode
Gain / digital filtering /
sampling rate / power
modes
1)
Measured without filter @ 500K, 10 Hz, room temperature
Order Information
Part
Number Filter μm
ePY12111
ePY12211
ePY12241
ePY12251
5.00
3.91
4.64
4.48
Filter BW μm
Long Pass
90 nm
180 nm
620 nm
Comment
Human motion rejection
Rejection channel
Flame channel (wide FoV)
Flame channel (main detector)
Ordering Code
ePYxxxxx-R7
ePYxxxxx-R13
ePYxxxxx
ePYxxxxx-B1
Description
800 pcs on 7” tape and reel
4000 pcs on 13” tape and reel
bulk
Sensor on a breakout PCB
For more information contact:
sales@pyreos.com
Please note: the information contained in this document is subject to change without further notification. Pyreos reserves the right to alter the performance
and any resulting specification. Pyreos may choose not to supply any engineering sample devices as a commercial product. No responsibility is accepted for
any consequential loss incurred. Pyreos Ltd, SMC, Alexander Crum Brown Road, Edinburgh EH9 3FF, UK. Tel: +441316507009, www.pyreos.com
1
ePY12XX1 (SMD)
- (Rev. 3.4)
PRELIMINARY
Package Information
Signal Filtering & Power Modes
Power Mode (base
sample rate)
Normal Power Mode
Low Power Mode
High Pass Filter – Analog (Hz)
Off
Off
1
0.17
2
0.33
4
0.66
8
1.3
Fixed Analog
Low Pass
Filter (Hz)
600
100
Fixed Digital
Low Pass
Filter (Hz)
250
42
Digital Low Pass Filter
(Hz)
180
30
90
15
45
7.5
22.5
3.75
Max ADC
Sampling Rate
(sps)
1000
166
Mode
Power
consumption
Normal Power Mode
Low Power Mode
Normal Operation Mode
Operational
state
Sleep Mode
Power Down Mode
Description
Normal power consumption, 1 kHz max. sample rate
Low power consumption, 166 Hz max. sample rate
Sensor signal readout over I
2
C
Hardware interrupt on infrared trigger
Sensor is disabled
Typical Current Consumption
(1.8 V, room temperature)
22
µA
3.5
µA
22
µA
21
µA
(Normal), 3.5
µA
(Low)
1.1
µA
Circuit Diagrams
Single Device Block Diagram
Three Devices with Synchronised Sampling
Please note: the information contained in this document is subject to change without further notification. Pyreos reserves the right to alter the performance
and any resulting specification. Pyreos may choose not to supply any engineering sample devices as a commercial product. No responsibility is accepted for
any consequential loss incurred. Pyreos Ltd, SMC, Alexander Crum Brown Road, Edinburgh EH9 3FF, UK. Tel: +441316507009, www.pyreos.com
2
ePY12XX1 (SMD)
- (Rev. 3.4)
PRELIMINARY
Infrared Frequency Characteristics
Typical Frequency Response in Normal Power Mode
Typical Frequency Response in Low Power Mode
Typical Frequency Response at Different Gain Settings
Please note: the information contained in this document is subject to change without further notification. Pyreos reserves the right to alter the performance
and any resulting specification. Pyreos may choose not to supply any engineering sample devices as a commercial product. No responsibility is accepted for
any consequential loss incurred. Pyreos Ltd, SMC, Alexander Crum Brown Road, Edinburgh EH9 3FF, UK. Tel: +441316507009, www.pyreos.com
3
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