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TC03 Dataheets PDF



Part Number TC03
Manufacturers TelCom Semiconductor
Logo TelCom Semiconductor
Description (TC02 / TC03) PRECISION TEMPERATURE-TO-VOLTAGE CONVERTERS
Datasheet TC03 DatasheetTC03 Datasheet (PDF)

PRECISION TEMPERATURETO -VOLTAGE CONVERTERS PRELIMINARY INFORMATION TC02 TC02 TC03 TC03 PRECISION TEMPERATURE-TO-VOLTAGE CONVERTERS FEATURES s s s s s s Linearized Temperature-to-Voltage Converters Direct Centigrade Output Voltage Scaling (TC03) Wide Temperature Measurement Range (TC02) . – 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 ...

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PRECISION TEMPERATURETO -VOLTAGE CONVERTERS PRELIMINARY INFORMATION TC02 TC02 TC03 TC03 PRECISION TEMPERATURE-TO-VOLTAGE CONVERTERS FEATURES s s s s s s Linearized Temperature-to-Voltage Converters Direct Centigrade Output Voltage Scaling (TC03) Wide Temperature Measurement Range (TC02) ............................... – 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 ................ TO-92-3 and SOT-23B-3 GENERAL DESCRIPTION The TC02/03 temperature sensors furnish a linearized output voltage directly proportional to measured temperature. The TC03 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 TC02 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 TC03 (10mV/°C). The output voltage range is 300mV at – 20°C to 1,750mV at +125°C. Small size, low cost and low power operation make the TC02/03 suitable for a wide range of general purpose temperature measurement applications. APPLICATIONS s s s s s Power Supply Thermal Shut-Down Temperature-Controlled Fans Temperature Measurement/Instrumentation Temperature Regulators Consumer Electronics ORDERING INFORMATION Output Voltage At 25°C 750mV 750mV 250mV 250mV Part No. TC02VNB TC02VZB TC03VNB TC03VZB Package *SOT-23B-3 TO-92 *SOT-23B-3 TO-92 Temp. Range – 20°C to +125°C – 20°C to +125°C – 20°C to +100°C – 20°C to +100°C FUNCTIONAL BLOCK DIAGRAM NOTE: *SOT-23B-3 is equivalent to JEDEC (TO-236) VCC = 2.2V to 12V MICROCONTROLLER . PIN CONFIGURATION *SOT-23B-3 (Top View) GND 3 TO-92-3 1 2 3 VCC VOUT TC03 GND A/D CONVERTER TC02VZB TC03VZB TC02VNB TC03VNB 1 VCC 2 VOUT VOUT NOTE: *SOT-23B-3 is equivalent to JEDEC (TO-236) TC02/03-04 6/18/97 TelCom Semiconductor reserves the right to make changes in the circuitry and specifications of its devices. 1 GND VCC PRELIMINARY INFORMATION PRECISION TEMPERATURETO -VOLTAGE CONVERTERS TC02 TC03 ABSOLUTE MAXIMUM RATINGS * Supply Voltage ............................................................15V Input Voltage, Any Terminal .............. – 1.0 to (VCC +0.3V) Operating Temperature (TC02) ............. – 20°C to +125°C Operating Temperature (TC03) ............. – 20°C to +100°C Storage Temperature ............................ – 55°C to +150°C Lead Temperature (Soldering, 10 sec) SOT-23B-3 ..................................................... +260°C TO-92-3 .......................................................... +300°C * Static-sensitive device. Unused devices must be stored in conductive material. Protect devices from static discharge and static fields. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. Exposure to Absolute Maximum Rating Conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS : TA = – 20°C to +125°C, VCC = 5V ±5%, unless otherwise specified. Symbol VCC VCC IS ISRC Parameter Supply Voltage (TC02) Supply Voltage (TC03) Supply Current VOUT Output Source Current Accuracy at Room Temperature Accuracy at Minimum Temperature Test Conditions Min 3.0 2.2 — — –2 –7 –7 –3 –3 – 0.8 — — — Typ — — 40 — ± 0.5 ± 0.5 ± 0.5 — — — 80 10 — Max 12 12 60 1.0 +2 +5 +5 +3 +3 +0.8 — — VCC – 1.2 Unit V V µA mA °C °C °C °C µV/V mV/°C V Note 1 TA = 25°C (Note 2) TC02: TA = – 20°C TC03: TA = – 20°C (Note 2) TC02: TA = +125°C TC03: TA = +100°C Note 3, 4 Accuracy at Maximum Temperature (Note 2) Nonlinearity Line Regulation Average Slope of Output Voltage Maximum Output Voltage AV VOUTMAX TC02: 3.0V ≤ VCC ≤ 12V TC03: 2.2V ≤ VCC ≤ 12V (Note 1) Notes: 1. VOUT outputs open circuited. 2. Accuracy = Difference between calculated output voltage (10mV/°C x Device case temperature at specified temperature and power supply) and measured output voltage expressed in °C. 3. Nonlinearity = deviation of output voltage versus temperature from the best-fit straight line over the device rated temperature range. 4. Guaranteed by design. DETAILED DESCRIPTION A plot of output voltage versus temperature for both the TC02 and TC03 appears in Figure 1. The TC03 can be used with single power supply to measure temperatures from 0°C to 100°C. A pull-down resistor (R1 in Figure 2) must be added from VOUT to the negative power supply for measuring temperatures less than 0°C. The value of the resistor must be chosen to limit the maximum current pulled from the output to the negative supply to – 50µA (i.e. R1 = VSS/50µA). OUTPUT ST.


TC02 TC03 CXD2480R


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