Analog Devices TMP35 free download

File name tmp3567.pdf

a FEATURES Low Voltage Operation (2.7 V to 5.5 V) Calibrated Directly in °C 10 mV/°C Scale Factor (20 mV/°C on TMP37) 2°C Accuracy Over Temperature (typ) 0.5°C Linearity (typ) Stable with Large Capacitive Loads Specified 40°C to 125°C, Operation to 150°C Less than 50 µA Quiescent Current Shutdown Current 0.5 µA Max Low Self-Heating APPLICATIONS Environmental Control Systems Thermal Protection Industrial Process Control Fire Alarms Power System Monitors CPU Thermal Management GENERAL DESCRIPTION Low Voltage Temperature Sensor TMP35/TMP36/TMP37* FUNCTIONAL DIAGRAM +Vs (2.7V to 5.5V) TMP35 SHUTDOWN TMP36 TMP37 VOUT PACKAGE TYPES AVAILABLE SOT-25 (SOT23-5) VOUT 1 +VS 2 NC 3 TOP VIEW (Not to Scale) 4 SHUTDOWN 6 GND The TMP35, TMP36, and TMP37 are low voltage, precision centigrade temperature sensors. They provide a voltage output that is linearly proportional to the Celsius (Centigrade) temperature. The TMP35/TMP36/TMP37 do not require any external calibration to provide typical accuracies of 1°C at 25°C and 2°C over the 40°C to 125°C temperature range. The low output impedance of the TMP35/TMP36/ TMP37, linear output, and precise calibration simplify interfacing to temperature control circuitry and A/D converters. All three devices are intended for single supply operation from 2.7 V to 5.5 V maximum. Supply current runs well below 50 µA providing very low self-heating, less than 0.1°C in still air. In addition, a shutdown function is provided to cut supply current to less than 0.5 µA. The TMP35 is functionally-compatible with the LM35/LM45 and provides a 250 mV output at 25°C. The TMP35 reads temperatures from 10°C to 125°C. The TMP36 is specified from 40°C to 125°C, provides a 750 mV output at 25°C and operates to 125°C from a single 2.7 V supply. Both the TMP35 and TMP36 have an output scale factor of 10 mV/°C. The TMP37 is intended for applications over the range 5°C to 100°C, and provides an output scale factor of 20 mV/°C. The TMP37 provides a 500 mV output at 25°C. Operation extends to 150°C with reduced accuracy for all devices when operating from a 5 V supply. The TMP35/TMP36/TMP37 are all available in low cost 3-pin TO-92, and SO-8 and 5-pin SOT-25 surface mount packages. * Patent pending. NC = NO CONNECT SO-8 VOUT 1 NC 2 8 +VS 7 NC TOP VIEW (Not to Scale) 6 NC NC 3 GND 4 5 SHUTDOWN NC = NO CONNECT TO-92 1 2 3 BOTTOM VIEW (Not to Scale) PIN 1 - +Vs, PIN 2 - VOUT, PIN 3 - GND REV. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. © Analog Devices, Inc., 1996 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703 TMP35/TMP36/TMP37F/G­SPECIFICATIONS unless otherwise noted) Parameter