TMP17

a FEATURES Operating Temperature Range: ؊40؇ C to ؉ 105؇C Single Supply Operation: ؉ 4 V to ؉ 30 V Excellent Repeatability and Stability High Level Output: 1 ␮ A/K Monolithic IC: Temperature In/Current Out Minimal Self-Heating Errors APPLICATIONS Appliance Temperature Sensor Automotive Temperature Measurement and Control HVAC System Monitoring Industrial Temperature Control Thermocouple Cold Junction Compensation GENERAL DESCRIPTION Low Cost, Current Output Temperature Transducer TMP17* FUNCTIONAL DIAGRAM NC V V NC NC NC NC NC PACKAGE DIAGRAM SO-8 NC 1 V V 2 8 NC The TMP17 is a monolithic integrated circuit temperature transducer that provides an output current proportional to absolute temperature. For a wide range of supply voltages the transducer acts as a high impedance temperature dependent current source of 1 µA/K. Improved design and laser wafer trimming of the IC’s thin-film resistors allows the TMP17 to achieve absolute accuracy levels and nonlinearity errors previously unattainable at a comparable price. The TMP17 can be employed in applications between Ϫ40°C to ϩ105°C where conventional temperature sensors (i.e., thermistor, RTD, thermocouple, diode) are currently being used. Expensive linearization circuitry, precision voltage references, bridge components, resistance measuring circuitry and cold junction compensation are not required with the TMP17. 7 NC TOP VIEW 3 (Not to Scale) 6 NC 5 NC NC 4 NC = NO CONNECT The TMP17 is available in a low cost SO-8 surf...