|
|
PDF A2TPMI Data sheet ( Hoja de datos )
| Número de pieza | A2TPMI | |
| Descripción | Thermopile | |
| Fabricantes | Excelitas | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de A2TPMI (archivo pdf) en la parte inferior de esta página. Total 21 Páginas | ||
|
No Preview Available !
Datasheet A2TPMI TM
Thermopile with integrated signal processing circuit
FEATURES
Smart thermopile sensor with integrated
signal processing.
Can be adapted to your specific meas-
urement task.
Integrated, calibrated ambient tempera-
ture sensor.
Output signal ambient temperature com-
pensated.
Fast reaction time.
Different optics and IR filters available.
Digital serial interface for calibration and
adjustment purposes.
Analog frontend/backend, digital signal
processing.
E2PROM for configuration and data stor-
age.
Configurable comparator with high/low
signal for remote temperature threshold
control.
TO 39 6 pin housing.
APPLICATIONS
• Miniature remote non contact temperature
measurement (pyrometer).
• Temperature dependent switch for alarm or
thermostatic applications
• Residential, commercial, automotive, and in-
dustrial climate control.
• Household appliances featuring a remote tem-
perature control like microwave oven, toaster,
hair dryer.
• Temperature control in laser printers and copi-
ers.
• Automotive climate control.
FUNCTIONAL DIAGRAM
Serial Interface
(SCLK, SDAT)
TP
PTAT
Offset correction
+
V1 +
-
V2
Signal-
processor
Switch A
Vref
Control Unit
Switch B
Switch C
Comp 1
Comp 2
Switch D
VTobj
VTamb / VRef
TP: Thermopile
PTAT: Temperature Sensor
VTobj :
VTamb :
VRef :
Output voltage object temperature
Output voltage ambient temperature
1.225 V reference voltage
A2TPMI Datasheet Rev4
Page 1 of 21
Rev. Oct 2003
1 page  
Datasheet A2TPMI TM
Absolute Maximum ratings
Parameter
Supply Voltage VDD
Storage Temperature Range (Note 1)
Operating Temperature Range
Voltage at all inputs and outputs (Note 1)
Current at input pins (Note 2)
Lead temperature (Soldering, 10sec)
ESD Tolerance (Note 3)
Min
-0.3 V
-40 °C
-25°C
-0.3 V
MAX
+6.5 V
100°C
100°C
VDD +0.3 V
+/- 5mA
+300°C
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, 1.5kW in series with 100pF. 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 cotton swab.
Electrical Characteristics
Unless otherwise indicated, all limits specified for TA = 25°C, VDD = +5 V
Symbol Parameter
Min Typ Max
Power Supply
VDD Supply Voltage
4.5 5 5.5
IDD Supply Current
Outputs VTobj / VTambESD
VO Output Voltage Swing
RO Output Resistance
RL Resistive Output Load
CL Capacitive Output Load
ISC Output short circuit current
1.5 2
0.25
50
VDD -
0.25V
100
100 500
6
13
Serial Interface SDAT, SCLK
ViL Low level input voltage
ViH High level input voltage
IiL Low level input current
IiH High level input current
0.7VDD
-600
0.3 VDD
-200
1
Unit
V
mA
V
W
kW
pF
mA
mA
V
V
mA
mA
Conditions
RL > 1MW
Iout: -100mA +100mA
Sourcing
Sinking
A2TPMI Datasheet Rev4
Page 5 of 21
Rev. Oct 2003
5 Page 
Datasheet A2TPMI TM
Application Information
AMBIENT TEMPERATURE COMPENSATION
Because of many physical effects, that influence the non-contact temperature measurement based on
infrared radiation, it is difficult to meet the best initial adjustment for a specific application. Therefore
some deviations might be found at first measuring. For all applications the optimized solution can be
prepared and fixed based on the measurement in the application environment. Excelitas is pleased
in providing you assistance to find the conditions, which deliver the highest accuracy in your application.
The temperature compensation is only working well within a certain ambient temperature range, limited
by different device parameters of the thermopile sensor and the temperature reference sensor. The
following diagram shows a typical characteristics and is only an example for better understanding of the
principle compensation curve. The curve shows the deviation for a correct working of a compensated
module.
Temperature Deviation of VTobj vs. Ambient Temperature
3
2,5
2
1,5
1
0,5
0
-20 0
-0,5
20 40 60
Ambient Temperature [°C]
80
100
The compensation of the module sample in the diagram is adjusted to the best fitting at 20°C to 80°C
ambient temperature, but the curve can be shifted in the whole ambient temperature range through the
change of A2TPMI parameters.
MEASUREMENT TOLERANCE
The temperature error of the A2TPMI depends on several factors like the emissivity, object temperature,
object size to spot size relation, temperature gradients over the sensor housing in the environment,
device tolerances and the optimal adjustment of the ambient temperature compensation.
The accuracy as specified under VTamb and VTobj characteristics is based on theoretical calculation as
well as on statistical evaluation results. The Excelitas quality system ensures that all A2TPMIs are
calibrated and tested under a certain test conditions in order to guarantee these specifications.
However, due to the nature of infrared remote temperature measurements there might occur limits
exceeding or deviations in specific application environments. In this case please contact the Excelitas
application support to help you solving the problem.
A2TPMI Datasheet Rev4
Page 11 of 21
Rev. Oct 2003
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet A2TPMI.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| A2TPMI | Thermopile |  PerkinElmer Optoelectronics |
| A2TPMI | Thermopile | Excelitas |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |