A2TPMI® 23S - PerkinElmer

Thermopile with integrated signal processing circuit in SMD housing
Description
The PerkinElmer A2TPMI® is a versatile
infrared thermopile sensor with an
integrated configurable ASIC for signal
processing and ambient temperature
compensation. This integrated infrared
module senses the thermal radiation
emitted by objects and converts this to an
analog voltage.
The A2TPMI is delivered fully factory
calibrated and adapted to the customer
specification. Therefore only three pins
are necessary for operation: object output
voltage, 5 V supply voltage, and ground.
As compared to discrete sensors, the
integrated sensor modules of the A2TPMI
series feature several advantages:
- Due to integration of sensor and
electronic into the housing, the A2TPMI is
robust and insensitive to environmental
influences like pcb contamination
(leakage currents), humidity and
electromagnetic interference.
The compact ceramic SMD housing
additionally offers a range of advantages
over a classical TO-housing:
- Automated assembly is possible.
- Smaller size
- Superior thermal properties, allowing
the sensor to operate reliably in
challenging environments with thermal
gradients and ambient temperature
changes.
D A T A S H E E T
S EN SO R S O L U T IO N S
A2TPMI® 23S
Features and Benefits
• Smart thermopile sensor with
integrated signal processing.
• Can be adapted to your specific
measurement task.
• Integrated, calibrated ambient
temperature sensor.
• Output signal ambient temperature
compensated.
• Fast reaction time.
• Different optics and IR filters
available.
• Digital serial interface for calibration
and adjustment purposes.
• Analog front end / back end, digital
signal processing.
• E2PROM for configuration and data
storage.
• Configurable comparator with high /
low signal for remote temperature
threshold control.
• Small SMD package.
Applications
- Internal offset correction of the amplifier.
- A factory calibrated ambient temperature sensor that allows for precise
internal ambient temperature
compensation.
- The amplification of the highly sensitive
thermopile signal in the micro- to millivolt
range is performed by a high resolution
programmable low noise chopper
amplifier.
- Two configurable comparators can
optionally be used to enhance the
functionality. This allows employing the
A2TPMI as a temperature dependent
switch for alarm purposes.
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• Miniature remote non-contact
temperature measurement
(pyrometer).
• Temperature dependent switch for
alarm or thermostatic applications.
• Residential, commercial,
automotive, and industrial
climate control.
• Household appliances featuring
a remote temperature control like
microwave oven, toaster, hair dryer.
• Temperature control in laser
printers and copiers.
DATASHEET
Table of Contents
Functional Diagram
3
Absolute Maximum Ratings
3
Electrical Characteristics
4
AC Characteristics
4
Thermopile Characteristics
4
VTobj / VTamb Characteristics
4
Optical Characteristics
4
Soldering
4
Packaging Information
4
Quality Statement
4
Liability Policy
4
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A2TPMI® 23S
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DATASHEET
Functional Diagram
Offset correction
Switch C
+
V1
TP
+
V2
VTobj
Switch A
Signalprocessor
PTAT
Vref
Comp 1
Comp 2
Serial Interface
(SCLK, SDAT)
Switch B
TP:
PTAT:
VTamb / VRef
Control Unit
Thermopile
Temperature Sensor
VTobj :
VTamb :
VRef :
Switch D
Output voltage object temperature
Output voltage ambient temperature
1.225 V reference voltage
Absolute Maximum Ratings
Parameter
Min
MAX
Supply voltage VDD
-0.3 V
+6.5 V
Storage temperature range Note 1)
Operating temperature range
Voltage at all inputs and outputs Note 2)
Current at input pins Note 2)
ESD tolerance Note 3)
-40° C
-25° C
-0.3 V
100° C
100° C
VDD +0.3 V
+/- 5 mA
2.5 kV
Note 1: Extension to 120° C for limited periods of several minutes possible.
Note 2: Limiting input pin current is only necessary for input voltages that exceed absolute maximum input voltage ratings.
Note 3: Human body model, 1.5 kΩ in series with 100 pF. All pins rated per method 3015.7 of MIL-STD-883.
Static-sensitive device. Unused devices must be stored in conductive material. Protect
devices from static discharge and static fields. Stresses above those listed under “Absolute
maximum ratings” may cause permanent damage to the device. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
Precautions should be taken to avoid reverse polarity of power supply. Reversed polarity of
power supply results in a destroyed unit.
Do not expose the sensors to aggressive detergents such as freon, trichlorethylen, etc.
Optical windows (e.g. filter, lens) may be cleaned with alcohol and a cotton swab.
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A2TPMI® 23S
3
DATASHEET
Electrical Characteristics
Symbol
Parameter
Min
Typ
Max
Unit
Conditions
4.5
5
1.5
5.5
2
V
mA
RL > 1 MΩ
VDD –0.25 V
100
V
Ω
kΩ
pF
mA
mA
Sourcing
Sinking
0.5
V
V
Output current ≤ 2 mA
Output current ≥ 2 mA
1.227
±100
V
ppm K-1
RL > 1 MΩ, Tamb = 25° C
Max
120
1
75
150
Unit
nV/√Hz
s
ms
ms
Conditions
rms value
Max
Unit
Conditions
Power Supply
VDD
IDD
Supply voltage
Supply current
Outputs VTobj / VTamb
VO
RO
RL
CL
ISC
Output voltage swing
Output resistance
Resistive output load
Capacitive output load
Output short circuit current
0.25
50
100
6
13
500
Iout: -100 µA … +100 µA
Serial Interface SDAT, SCLK
VoL
VoH
Low level output voltage
High level output voltage
VDD-0.6 V
Reference Voltage
VRef
TCVRef
Reference voltage
Temperature coefficient of reference
voltage
1.223
1.225
±30
Unless otherwise indicated, all limits specified for Tamb = 25° C, VDD = +5 V
AC Characteristics
Symbol
Parameter
Min
Typ
InN
V1 Input referred voltage noise
tStrt
Response time after power on
tlat
Latency time for VTobj
Response time
90
tresp
Unless otherwise indicated, all limits specified for Tamb = 25° C, VDD = +5 V
Thermopile Characteristics
Symbol
Parameter
Min
Typ
2-type chip
S
N
τ
Sensitive (absorber) area
Noise voltage
Time constant
0,2
42
15
mm2
nV/√Hz
ms
VTobj / VTamb Characteristics
The VTobj and the VTamb characteristics of thermopile sensors depend not only on object and
ambient temperature but on several other factors like object size to spot size relation,
ambient temperature compensation behaviour or optical filter characteristics. Therefore it is
not possible to specify a general VTobj and VTamb characteristic. Those characteristics will be
specified application specific in a separate customer specification.
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A2TPMI® 23S
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DATASHEET
Optical Characteristics
Symbol
Parameter
Min
Typ
Field of view
120
Optical axis
0
Max
+/- 10
Unit
Conditions
degree
At 50% relative
output signal
degree
100
90
80
Relative Responsivity [%]
70
60
Sensor Orientation A
50
40
30
20
10
0
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
Angle of Incidence [degree]
Figure 1 Typical Field of View Curve (Sensor Orientation A)
100
90
80
Relative Responsivity [%]
70
60
Sensor Orientation B
50
40
30
20
10
0
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
Angle of Incidence [degree]
Figure 2 Typical Field of View Curve (Sensor Orientation B)
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A2TPMI® 23S
5
DATASHEET
Filter Parameters
Symbol
Parameter
Min
Typ
TA
Average transmittance
75
> 77
TA
Average transmittance
λ (5 %)
Cut on wavelength
5.2
Max
Unit
Conditions
Wavelength range from
7.5 µm to 13.5 µm
Wavelength range
< 5 µm
%
< 0.5
%
5.8
µm
5.5
At 25°C
100
90
80
Transmittance [%]
70
60
50
40
30
20
10
0
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
Wavelength [µm]
Figure 3 Transmission Curve for PerkinElmer Standard Filter
Soldering
The A2TPMI 23S is a lead-free component and fully complies with the RoHS regulations,
especially with existing roadmaps of lead-free soldering. Reflow soldering is
recommended. A typical lead free reflow profile is shown in figure 4. Specific reflow
soldering parameters depend on the solder alloy used.
The device meets MSL3 at 245 °C according to JEDEC standard.
300
Peak Temperature
235 - 255 °C
250
Temperature [°C]
200
Reflow Zone
time above ~217 °C
typical 60 - 75 s
Soaking Zone
typical 60 - 90 s
150
100
<2.5 °C/s
Pre-heating Zone
2 - 4 min max
50
0
0
30
60
90
120
150
180
210
240
270
300
330
Time [s]
Figure 4 Typical Lead Free Reflow Profile
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A2TPMI® 23S
6
DATASHEET
Packaging Information
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A2TPMI® 23S
7
DATASHEET
Quality Statement
PerkinElmer Optoelectronics is an ISO 9001:2002 and ISO/TS 16949:2002 certified manufacturer. All devices
employing PCB assemblies are manufactured according IPC-A-610 guidelines.
Liability Policy
The contents of this document are subject to change without notice and customers should consult with
PerkinElmer Optoelectronics sales representatives before ordering. Customers considering the use of
PerkinElmer Optoelectronics thermopile devices in applications where failure may cause personal injury or
property damage, or where extremely high levels of reliability are demanded, are requested to discuss their
concerns with PerkinElmer Optoelectronics sales representatives before such use. The Company’s
responsibility for damages will be limited to the repair or replacement of defective product. As with any
semiconductor device, thermopile sensors or modules have a certain inherent rate of failure. To protect
against injury, damage or loss from such failures, customers are advised to incorporate appropriate safety
design measures into their product.
North America
Customer Support Hub
22001 Dumberry Road
Vaudreuil-Dorion, Québec
Canada J7V 8P7
Telephone:(+1) 450-424-3300
(+1) 866-574-6786 (toll-free)
Fax: (+1) 450-424-3345
Email: [email protected]
European Headquarters
Wenzel-Jaksch-Strasse 31
65199 Wiesbaden, Germany
Telephone: (+49)611-492-247
Fax: (+49)611-492-170
Email: [email protected]
Asia Headquarters
47 Ayer Rajah Crescent #06-12
Singapore 139947
Telephone: (+65)6775-2022
(+65)67704-366
Fax: (+65)6775-1008
Email: [email protected]
For a complete listing of our global offices, visit www.optoelectronics.perkinelmer.com
©2008 PerkinElmer, Inc. All rights reserved. The PerkinElmer logo and design are registered trademarks of PerkinElmer, Inc. TPMI® is a trademark of PerkinElmer, Inc. or its subsidiaries, in the
United States and other countries. All other trademarks not owned by PerkinElmer, Inc. or its subsidiaries that are depicted herein are the property of their respective owners. PerkinElmer reserves
the right to change this document at any time without notice and disclaims liability for editorial, pictorial or typographical errors.
600260_01 DTS0408
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A2TPMI® 23S
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