TC1023

PRECISION TEMPERATURE-TO-VOLTAGE CONVERTERS WITH SHUTDOWN MODE PRELIMINARY INFORMATION TC1023 TC1023 TC1024 TC1024 PRECISION TEMPERATURE-TO-VOLTAGE CONVERTERS WITH SHUTDOWN MODE FEATURES s s s s s s s s Linearized Temperature-to-Voltage Converters Direct Centigrade Output Voltage Scaling (TC1023) Shutdown/Calibrate Mode Multi-Zone Temperature Sensing Capability Wide Temperature Measurement Range (TC1024) ........................... – 20°C to +125°C Excellent Temperature Converter Linearity .. 0.8°C Over Temperature High Temperature Converter Accuracy ......... ± 2°C at 25°C Guaranteed Small Packages ......... 8-Pin SOIC and 8-Pin MSOP GENERAL DESCRIPTION The TC1023/1024 temperature sensors furnish a linearized output voltage directly proportional to measured temperature. The TC1023 has a temperature measurement range of – 20°C to +100°C. Its output voltage is directly calibrated in degrees Centigrade (i.e., VOUT = 10mV/°C x Temperature °C). An external pull-down resistor to a negative voltage source is required for temperature measurement below 0°C. The TC1024 has a temperature measurement range of – 20°C to +125°C, and operates with a single supply. It has the same output voltage slope with temperature as the TC1023 (10mV/°C). The output voltage range is 100mV at – 20°C to 1,750mV at +125°C. Both devices have a chip enable input that reduces supply current to 1µA (typical) when pulled active high. In this state, the output defaults to a high resistance allowing an externa...