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Contact less Temperature Measurement
Small Size
High Accuracy
Digital Interface Bus (SPI)
DESCRIPTION
The TSEV01S01B90 is a contact-less temperature measuring system for OEM use based on
the detection of infrared radiation.
The TSEV01S01B90 is equipped with an infrared sensor (Thermopile) in front. The
Thermopile Sensor has to be pointed at the target object.
The basic working principle is:
Detection of infrared radiation with a Thermopile sensor, which turns incoming
radiation to an analogue voltage
Determination of sensor temperature using a thermistor
Calculation of ambient and object temperature using a processing unit
Providing the ambient and objects temperature at digital output bus (SPI)
The TSEV01S01B90 module is suitable for a wide range of application where non-contact
temperature measurement and high accuracy are required.
FEATURES APPLICATIONS
0°C – 100°C Measurement Range Contact less Temperature Measurement
Small Size Climate Control
Up to 2°C Accuracy Industrial Process Control
2mA Current Consumption Household Applications
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ABSOLUTE MAXIMUM RATINGS
Absolute maximum ratings are limiting values of permitted operation and should never be exceeded under the worst
possible conditions either initially or consequently. If exceeded by even the smallest amount, instantaneous
catastrophic failure can occur. And even if the device continues to operate satisfactorily, its life may be considerably
shortened.
Parameter Symbol Conditions Min Typ Max
Unit
Supply Voltage Vccmax Stabilized supply voltage -0.2 4.0 V
Operating Temperature Topmax -10 85 °C
Storage temperature Tstor -40 85 °C
Humidity HumL -40°C - +50°C 85 %
Humidity HumH +50°C - +85°C 50 %
OPERATING CONDITIONS
Parameter Symbol Conditions Min Typ Max
Unit
Supply Voltage Vcc Stabilized supply voltage 2.6 3.3 3.6 V
Operating Temperature Range Top 0 85 °C
Emission Coefficient ε0.98
SENSOR CONDITIONS
If not otherwise noted, 3.3V supply voltage and object with ε =0.98 were applied.
Parameter Symbol Conditions Min Typ Max Unit
Field of View FOV Total field of view at 50%
signal level 90 °
Wavelength Range S 5.0 (cut on) µm
OPERATIONAL CHARACTERISTICS
If not otherwise noted, 3.3V supply voltage and object with ε =0.98 were applied.
Parameter Symbol Conditions Min Typ Max
Unit
Object Temperature Range Tobj 0 100 °C
Resolution Res 0.02 °C
Supply Current
1)
I No output load 2 mA
Data Output Rate Fout 1 Hz
Standard Start-Up Time tStart 3 s
TOLERANCES
If not otherwise noted, 3.3V supply voltage and object with ε =0.98 were applied.
Parameter Symbol Sensor Temp. Object Temp. Max Unit
Accuracy Standard Temp
1)
AccS 15 < Tsen < 35 40 < Tobj < 80 2 °C
Accuracy Extended Temp. 1
2
)
AccE1 Tsen < 15, Tsen > 35 40 < Tobj < 80 3 °C
Accuracy Extended Temp. 2
2
)
AccE2 15 < Tsen < 35 Tobj < 40, Tobj > 80 3 °C
Accuracy Extended Temp. 3
2
)
AccE3 Tsen < 15, Tsen > 35 Tobj < 40, Tobj > 80 4 °C
OTHER TEMPERATURE RANGES AND ACCURACIES ARE AVAILABLE ON REQUEST.
1) Proved while production
2) Proved by design
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SENSOR FIELD OF VIEW
MECHANICAL DIMENSIONS
Only use hatched areas for mechanical
assembly (screws, nuts, etc).
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TERMINALS
Connector: solder pads
Pin
Name
Des
c
ription
Type
1 VDD Supply Voltage Supply
2 GND Ground Supply
3 SCL SPI Clock Interface
4 MISO SPI Master In / Slave Out Interface
5 MOSI SPI Master Out / Slave In Interface
6 SCE SPI Chip Enable Interface
Pin 1 Pin 6
BLOCK DIAGRAM
Thermopile
MCU
(Signal Processing,
Signal Compensation)
SPI
Interface
EEPROM
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INTERFACE
PARAMETER
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Baudrate FSPI 10 100 kHz
Data Bits 8
Chip Select Yes
Input Voltage Low 0.9 V
Input Voltage High Vcc = 3.3V 2.1 V
Output Voltage Low 1mA 0.3 V
Output Voltage High Vcc = 3.3V, 1mA 3.0 V
SIGNAL DESCRIPTION
SCE (Chip Select) 0 = Enable, 1 = Disable
CKP 0
CKE 1
SAMPLE CODE
Sample Code for sending 8 bits and reading 8 bits while sending 8 clocks.
// Setting directions
TRISC4 = 1; // SDI = Input
TRISC5 = 0; // SDO = Output
TRISC3 = 0; // SCL = Output
// Reset SPI Lines
RC5 = 0; // SDO
RC3 = 0; // SCL
for (c = 0; c < 8; c++)
{cReceive = cReceive << 1; // Shift Receive Register
RC3 = 0; // SCL = 0
RC5 = (cTransmit >> (7 - c)); // Outupt next Bit on SDO
RC3 = 1; // SCL = 1
cReceive = cReceive | RC4; // Input next Bit on SDI
}
RC3 = 0;
RC5 = 0;
return cReceive;
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AMBIENT AND OBJECT TEMPERATUREMEASUREMENT
Please refer following table for SPI commands to read object temperature and ambient
temperature. Both values are transmitted in hundredth of degrees.
Com Description Reply Bytes
0xA0 Sensor Temperature Sensor temperature in hundredth of degrees Celsius 2
0xA1 Object Temperature Object temperature in hundredth of degrees Celsius 2
SEQUENCE OF TRANSMISSION
Enable SCE (SCE=0) before transmission of “Command”. Release SCE (SCE=1) after
reading last byte.
Command (0xA0 or 0xA1)
???
0x00
Temperature High Byte
0x00
Temperature Low Byte
MASTER Sensor
First Transmission
8 Clocks
8 Bits Write
8 Bits Read
Second Transmission
8 Clocks
8 Bits Write
8 Bits Read
Third Transmission
8 Clocks
8 Bits Write
8 Bits Read
8 bits
8 bits
8 bits
8 bits
8 bits
8 bits
EXAMPLE OF TEMPERATURE CALCULATION
For reading object temperature send: 0xA1
Return values i.e.:
Byte(0) = ??? discard reading
Byte(1) = 0x1A (=26)
Byte(2) = 0xB0 (=176)
Tobj = (256 * Byte(1) + Byte(2)) / 100 = (256 * 26 + 176) / 100 = 68.32°C
NAMING CONVENTION
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TSEV01 S 01 B 10
Series
Interface (S = SPI, I = I2C)
Variant (01, 02, ...)
Option (B = Basic, C = Comfort)
Field of View at 50% Signal Level (5°, 10°, ...)
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ORDER INFORMATION
Please order this product using following:
Part Number Part Description
G-TPMO-020 TSEV01S01B90
EMC
Due to the use of these modules for OEM application no CE declaration is done.
Especially line coupled disturbances like surge, burst, HF etc. cannot be removed by the
module due to the small board area and low price feature. There is no protection circuit
against reverse polarity or over voltage implemented.
The module will be designed using capacitors for blocking and ground plane areas in order
to prevent wireless coupled disturbances as good as possible.
DEFINITIONS AND DISCLAIMERS
Application information – Applications that are described herein for any of these products are for
illustrative purpose only. MEAS Deutschland GmbH makes no representation or warranty that such
applications will be suitable for the specified use without further testing or modification.
Life support applications – These products are not designed for use in life support appliances,
devices, or systems where malfunctions of these products can reasonably be expected to result in
personal injury.
MEAS Deutschland GmbH customers using or selling this product for use in such applications do
so at their own risk and agree to fully indemnify MEAS Deutschland GmbH for any damages
resulting from such improper use or sale.
TECHNICAL CONTACT INFORMATION
NORTH AMERICA EUROPE ASIA
Measurement Specialties, Inc.
1000 Lucas Way
Hampton, VA 23666
United States
Phone: +1-800-745-8008
Fax: +1-757-766-4297
Email: sales@meas-spec.com
Web: www.meas-spec.com
MEAS Deutschland GmbH
Hauert 13
D-44227 Dortmund
Germany
Phone: +49-(0)231-9740-0
Fax: +49-(0)231-9740-20
Email: info.de@meas-spec.com
Web: www.meas-spec.com
Measurement Specialties China Ltd.
No. 26, Langshan Road
High-tech Park (North)
Nanshan District, Shenzhen 518057
China
Phone: +86-755-33305088
Fax: +86-755-33305099
Email: info.cn@meas-spec.com
Web: www.meas-spec.com
The information in this sheet has been carefully reviewed and is believed to be accurate; however, no responsibility is assumed for
inaccuracies. Furthermore, this information does not convey to the purchaser of such devices any license under the patent rights to the
manufacturer. Measurement Specialties, Inc. reserves the right to make changes without further notice to any product herein. Measurement
Specialties, Inc. makes no warranty, representation or guarantee regarding the suitability of its product for any particular purpose, nor does
Measurement Specialties, Inc. assume any liability arising out of the application or use of any product or circuit and specifically disclaims
any and all liability, including without limitation consequential or incidental damages. Typical parameters can and do vary in different
applications. All operating parameters must be validated for each customer application by customer’s technical experts. Measurement
Specialties, Inc. does not convey any license under its patent rights nor the rights of others.
