TSD305
DIGITAL TEMPERATURE SENSORS
Product Description
The TSD Series are digital thermopile sensors in a TO5 package. The
TSD sensors include an infrared sensor (thermopile) and a sensor
signal conditioner.
The TSD sensors can be interfaced to any microcontroller by an I
2
C
interface. This microcontroller has to calculate the temperature results
based on the ADC values and the calibration parameters
Features
0°C … up to +300°C measurement ranges
Small size
Small field of view available
Up to ±1°C accuracy
I
2
C Interface
Low current consumption
Operating Temperature Range: -10°C … +85°C
Applications
Contactless temperature measurement
Climate control
Industrial process control
Household applications
SENSOR SOLUTIONS
/// DATASHEET TSD305 SERIES
08/2018
Page 1
TSD305 SERIES
Digital Thermopile Sensor
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. Even if the device continues to operate satisfactorily, its life may be considerably shortened.
Parameter
Supply voltage
Storage temperature
Voltage at supply and IO pins
Current into supply and IO pins
ESD rating
Humidity
Symbol
V
DD
T
stor
V
DD
V
IO
I
IN
ESD
Hum
Condition
---
dry
---
---
Human Body Model
---
Min
-0.3
-20
-0.5
-100
-2
Typ
---
---
---
---
---
Non condensing
Max
+3.63
+85
V
DD
+0.5
100
+2
Unit
V
°C
V
mA
kV
---
OPERATING CONDITIONS
If not otherwise noted, 3.3V supply voltage is applied.
Parameter
Operating supply voltage
VDD rise time
Operating temperature
Resolution
Supply Current
Serial data clock I2C
Self-heating
VDD capacitor
Symbol
V
DD
t
VDD
T
op
RES
I
VDD
F
SCL
SH
C
VDD
Condition
stabilized, 100nF
---
---
---
Active state, average
Sleep state, idle current
---
1 sample/s, still air, 60s
Place close to the sensor
Min
1.68
---
-20
---
---
---
10
---
---
Typ
---
---
---
---
1050
20
100
---
100
Max
3.6
200
+85
0.1
1500
25
400
+0.2
---
Unit
V
µs
°C
°C
µA
nA
kHz
°C
nF
THERMOPILE COMPONENT
Parameter
Absorber area
Symbol
A
If not otherwise noted, 3.3V supply voltage is applied.
Condition
---
At 50% of maximum signal
Field of view
FOV
Sensor
---
TSD305-1C55
TSD305-2C55
TSD305-3C55
TSD305-1SL10
Long wave pass
Silicon lens, no coating
TSD305-1C55
TSD305-2C55
TSD305-3C55
TSD305-1SL10
---
---
Min
Typ
0.8 x 0.8
88
10
>5.5
≥1.1
---
---
Max
Unit
mm
deg
deg
µm
µm
Filter transmission range
---
SENSOR SOLUTIONS
/// DATASHEET TSD305 SERIES
08/2018
Page 2
TSD305 SERIES
Digital Thermopile Sensor
ANALOGUE TO DIGITAL CONVERTER
Parameter
Resolution
Conversion time
Rise time
Resolution internal temperature
sensor
Symbol
ADC
RES
t
CONV
t
63
ITS
RES
Condition
---
---
Including rise time of sensor element
---
Min
---
---
---
---
Typ
16
44.8
---
0.003
Max
---
59.2
44.8
---
Unit
bit
ms
ms
K/LSB
OBJECT TEMPERATURE RANGE
Parameter
Symbol
Sensor
TSD305-1C55
TSD305-3C55
TSD305-2C55
TSD305-1SL10
Min
0
0
Typ
---
---
Max
+100
+300
Unit
°C
°C
Object temperature range
1)
1)
T
OBJ
Other temperatures on request
TOLERANCES
Parameter
If not otherwise noted, 3.3V supply voltage is applied.
Symbol
Sensor Temperature
T
sen
= sensor temperature, T
obj
= object temperature
Sensor
TSD305-1C55
TSD305-3C55
TSD305-2C55
TSD305-1SL10
TSD305-1C55
TSD305-3C55
Object Temperature
+40°C < T
obj
< +80°C
±1
+170°C < T
obj
< +190°
+40°C < T
obj
< +80°C
Complete range
+170°C < T
obj
< +190°
Complete range
±2
%FS
%FS
Max
Unit
Accuracy Standard Temp
1)
ACC
S
+15°C < T
sen
< +35°C
Complete range
Accuracy Extended Temp. 1
2)
ACC
E1
+15°C < T
sen
< +35°C
Complete range
+15°C < T
sen
< +35°C
TSD305-2C55
TSD305-1SL10
TSD305-1C55
TSD305-2C55
TSD305-3C55
TSD305-1SL10
Accuracy Extended Temp. 2
2)
ACC
E3
Complete range
Complete range
±3
%FS
Other temperature ranges and accuracies are available on request.
1)
Ideal, proved by production
2)
Ideal case by design
POWER & RESET
Parameter
Symbol
t
STA1
t
STA2
t
WUP1
t
WUP2
t
RESET
VDD
low
SR
VDD
Condition
V
DD
ramp up to interface
communication
V
DD
ramp to first ADC measurement
Sleep to active state interface
communication
Sleep to first ADC measurement
VDD
low
---
---
Min
---
---
---
---
3
0
10
Typ
---
---
---
---
---
---
---
Max
1
2.5
0.5
2
---
0.2
---
Unit
ms
ms
ms
ms
µs
V
V/ms
Start up time
Wake up time
Power down time for reset
VDD low level
VDD rising slope
SENSOR SOLUTIONS
/// DATASHEET TSD305 SERIES
08/2018
Page 3
TSD305 SERIES
Digital Thermopile Sensor
DIMENSIONS
If not specified, all tolerances according DIN ISO 2768-m.
TSD305-1C55
TSD305-2C55
TSD305-3C55
TSD305-1SL10
PIN FUNCTION TABLE
Pin
1
2
3
4
Name
SCL
SDA
V
DD
V
SS
Type
DI
DIO
P
P
Function
I
2
C Clock
I
2
C Data
Supply Voltage
Ground
I
2
C INTERFACE
An I
2
C communication message starts with a start condition and it is ended by a stop condition.
Most commands consist of two bytes: the address byte and command byte.
I
2
C ADRESS
Sensor
TSD305-1C55
TSD305-2C55
TSD305-1SL10
TSD305-2C55
The standard I
2
C address is
I2C Address Hex
I2C Address Bin
0x00
0x1E
I
2
C Write
I
2
C Read
0b0000000X
0b0011110X
X = 0:
X = 1:
SENSOR SOLUTIONS
/// DATASHEET TSD305 SERIES
08/2018
Page 4
TSD305 SERIES
Digital Thermopile Sensor
STATUS BYTE
Bit
Meaning
7
---
Each return starts with a status byte followed by the requested data word.
6
---
5
Busy
4
---
3
---
2
Memory
Error
1
---
0
---
Busy:
Memory Error:
1 = Sensor is busy. The requested data is not available yet.
1 = Memory integrity check failed. Memory was changed after factory calibration.
COMMANDS
Command
0x00 … 0x39
0xAF
Note: Each return starts with a status byte followed by the requested data word.
Return
16 bit EEPROM data
24 bit object temperature ADC,
24 bit sensor temperature ADC
Description
Read data from EEPROM address (0x00 … 0x39) matching
the command
Measure object temperature and sensor temperature ADC 16
times and calculates mean value. Store data in output buffer.
Read EEPROM
Write Command:
Read EEPROM Data:
Perform Measurement and Read ADC Data
Write Command:
Read ADC Data:
SENSOR SOLUTIONS
/// DATASHEET TSD305 SERIES
08/2018
Page 5
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
