Datasheet TMP35, TMP36, TMP37 (Analog Devices)

Low Voltage Temperature Sensors Data Sheet TMP35/TMP36/TMP37 FEATURES FUNCTIONAL BLOCK DIAGRAM Low voltage operation (2.7 V to 5.5 V) +VS (2.7V TO 5.5V) Calibrated directly in °C 10 mV/°C scale factor (20 mV/°C on TMP37) ±2°C accuracy over temperature (typ) TMP35/ SHUTDOWN TMP36/ VOUT ±0.5°C linearity (typ) TMP37 Stable with large capacitive loads
001
Specified −40°C to +125°C, operation to +150°C
00337-
Less than 50 µA quiescent current
Figure 1.
Shutdown current 0.5 µA max Low self-heating PIN CONFIGURATIONS Qualified for automotive applications V 1 5 GND APPLICATIONS OUT +V TOP VIEW Environmental control systems S 2 (Not to Scale) Thermal protection NC 3 4 SHUTDOWN Industrial process control NC = NO CONNECT
00337-002
Fire alarms Power system monitors
Figure 2. RJ-5 (SOT-23)
CPU thermal management GENERAL DESCRIPTION V 1 8 OUT +VS NC 2 7 NC
The TMP35/TMP36/TMP37 are low voltage, precision centi-
TOP VIEW NC 3 (Not to Scale) 6 NC
grade temperature sensors. They provide a voltage output that
GND 4 5 SHUTDOWN
is linearly proportional to the Celsius (centigrade) temperature. The TMP35/TMP36/TMP37 do not require any external
NC = NO CONNECT
00337-003 calibration to provide typical accuracies of ±1°C at +25°C Figure 3. R-8 (SOIC_N) and ±2°C over the −40°C to +125°C temperature range. The low output impedance of the TMP35/TMP36/TMP37 and
1 2 3
its linear output and precise calibration simplify interfacing to
BOTTOM VIEW (Not to Scale)
temperature control circuitry and ADCs. All three devices are intended for single-supply operation from 2.7 V to 5.5 V maxi-
PIN 1, +VS; PIN 2, VOUT; PIN 3, GND
00337-004 mum. The supply current runs well below 50 µA, providing very low self-heating—less than 0.1°C in still air. In addition, a Figure 4. T-3 (TO-92) shutdown function is provided to cut the supply current to less than 0.5 µA. The TMP35 is functionally compatible with the LM35/LM45 The TMP37 is intended for applications over the range of 5°C and provides a 250 mV output at 25°C. The TMP35 reads to 100°C and provides an output scale factor of 20 mV/°C. The temperatures from 10°C to 125°C. The TMP36 is specified from TMP37 provides a 500 mV output at 25°C. Operation extends −40°C to +125°C, provides a 750 mV output at 25°C, and to 150°C with reduced accuracy for al devices when operating operates to 125°C from a single 2.7 V supply. The TMP36 is from a 5 V supply. functional y compatible with the LM50. Both the TMP35 and The TMP35/TMP36/TMP37 are available in low cost 3-lead TMP36 have an output scale factor of 10 mV/°C. TO-92, 8-lead SOIC_N, and 5-lead SOT-23 surface-mount packages.
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