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Application Note
Temperature Sensor IC
1. TSic 206/203/201/306/316/303/301
The TSic series of temperature sensor ICs are specifically
designed as a low-power solution for temperature mea-
surement in building automation, medical/pharma tech-
nologies, industrial and mobile applications. The TSic pro-
vides a simple temperature measurement and achieves
outstanding accuracy combined with long term stability.
The TSic has a high precision bandgap reference with a
PTAT (proportional-to-absolute-temperature) output, a
low-power and high-precision ADC and an on-chip DSP
core with an EEPROM for the precisely calibrated output
signal. The TSic temperature sensor is fully calibrated,
meaning no further calibration effort is required by the
customer.
Extended long wires (> 10 m) will not influence the accuracy. The TSic is available with digital (ZacWire
analog (0 V to 1V, TSic x01) or ratiometric (10 % to 90 % V
about 35 µA makes it suitable for many applications.
With an accuracy of ±0.3 K in a temperature range of 80 K (e.g. +10 °C to +90 °C), the TSic sensors are more ac-
curate than a class F0.3 (IEC60751) platinum sensor. The tolerances of the TSic and F 0.3 and F 0.15 platinum sensors
are compared in Figure 1. With a standard calibration, the TSic 30x is more accurate than a F 0.3 platinum sensor in
the range of +10 °C to +110 °C. The range can be shifted up or downwards to reach a high accuracy between e.g.
-30 °C to +50 °C.
Output examples
Temp (°C)
-50
-10
0
25
60
125
150
1) LT = -50
Formulas for the output signal [°C]:
Analog output (0 V to 1 V):
Ratiometric output (10 % to 90 %):
Digital output - 11 bit:
Digital output - 14 bit (TSic 316):
ATTSic_E2.1.4 | App Note | Temperature Sensor IC
Digital Values
(TSic x06)
0x000
1)
0x199
0x200
0x2FF
0x465
0x6FE
0x7FF
2)
2) HT = 150 as standard value for the temperature calculation
+
, TSic x03) output signal. The low power consumption of
Temperature Range: -50 °C to +150 °C
Analog 0 V to 1 V
Analog Ratiometric 10 % to 90 % (V
(TSic x01)
0.000
0.200
0.250
0.375
0.550
0.875
1.000
T = Sig [V] x (HT - LT) + LT [°C]
Sig [V]
-0.1
V
[V]
+
T =
0.8
Digital signal
T =
2047
Digital signal
T =
16383
TM
(TSic x03)
10 % V
(0.5 V)
+
26 % V
(1.3 V)
+
30 % V
(1.5 V)
+
40 % V
(2.0 V)
+
54 % V
(2.7 V)
+
80 % V
(4.0 V)
+
90 % V
(4.5 V)
+
x (HT - LT) + LT
[°C]
x (HT - LT) + LT [°C]
x (HT - LT) + LT [°C]
, TSic x06),
+
= 5.0 V)
3/15
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