TC02 TELCOM | Alldatasheet

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PRELIMINARY INFORMATIONPRECISION TEMPERATURE- TO -VOLTAGE CONVERTERS TC02/03-04 6/18/97 TC02 TC03 FUNCTIONAL BLOCK DIAGRAM

ORDERING INFORMATION

Part No. Package At 25 °C Temp. Range TC02VNB *SOT-23B-3 750mV – 20 °C to +125°C TC02VZB TO-92 750mV – 20 °C to +125°C TC03VNB *SOT-23B-3 250mV – 20 °C to +100°C TC03VZB TO-92 250mV – 20 °C to +100°C NOTE: *SOT-23B-3 is equivalent to JEDEC (TO-236) .PIN CONFIGURATION PRECISION TEMPERATURE-TO-VOLTAGE CONVERTERS

FEATURES

n Linearized Temperature-to-Voltage Converters n Direct Centigrade Output Voltage Scaling (TC03) n Wide Temperature Measurement n Excellent Temperature Converter Linearity .. 0.8°C Over Temperature at 25°C Guaranteed

APPLICATIONS

n Power Supply Thermal Shut-Down n Temperature-Controlled Fans n Temperature Measurement/Instrumentation n Temperature Regulators n Consumer Electronics GENERAL DESCRIPTION The TC02/03 temperature sensors furnish a linearized output voltage directly proportional to measured tempera- ture. The TC03 has a temperature measurement range of – 20°C to +100°C. Its output voltage is directly calibrated in degrees Centigrade (i.e. V OUT = 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. VCC VCCVOUT VOUT GND GND TC02VNB TC03VNB TC02VZB TC03VZB 3TC03 VCC = 2.2V to 12V VCC VOUT GND MICROCONTROLLER A/D CONVERTER *SOT-23B-3 (Top View) TO-92-3 TelCom Semiconductor reserves the right to make changes in the circuitry and specifications of its devices. NOTE: *SOT-23B-3 is equivalent to JEDEC (TO-236)

  • 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 perma- nent 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. ABSOLUTE MAXIMUM RATINGS * Lead Temperature (Soldering, 10 sec) ELECTRICAL CHARACTERISTICS : TA = – 20°C to +125°C , VCC = 5V ±5%, unless otherwise specified. Symbol Parameter Test Conditions Min Typ Max Unit VCC Supply Voltage (TC02) 3.0 — 12 V VCC Supply Voltage (TC03) 2.2 — 12 V IS Supply Current Note 1 — 40 60 µA ISRC VOUT Output Source Current — — 1.0 mA Accuracy at Room Temperature TA = 25°C (Note 2) – 2 ± 0.5 +2 °C Accuracy at Minimum Temperature TC02: T A = – 20°C– 7 ± 0.5 +5 °C (Note 2) Accuracy at Maximum Temperature TC02: T A = +125°C – 3 — +3 °C (Note 2) Nonlinearity Note 3, 4 – 0.8 — +0.8 °C Line Regulation — 80 — µV/V AV Average Slope of Output Voltage — 10 — mV/ °C VOUTMAX Maximum Output Voltage TC02: 3.0V ≤ VCC ≤ 12V TC03: 2.2V ≤ VCC ≤ 12V —— V CC – 1.2 V (Note 1) 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 V OUT 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 = V SS /50µA). 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. OUTPUT STAGE Both the TC02 and TC03 have Class A output stages capable of sourcing 1mA. These devices have a limited ability to drive heavy capacitive loads. Loads of 50pF (to ground) can be driven directly. For heavier loads, a 2kΩ (or greater) resistor should be placed in series with the output for decoupling. If the TC02/03 is used in a noisy electrical environment, a 0.1µF bypass capacitor from V CC to GND is recommended.

Supply Current vs. Temperature 20µsec/DIV VOUT (From Power Initially Applied) vs. Time (Turn-on Response) 2V/DIV 500mV/DIV AIR VELOCITY (FPM) Thermal Time Constant (Sec) vs. Air Velocity THERMAL TIME (SEC) 0 400 600 800 1000200 TEMPERATURE ( °C) 100 SUPPLY CURRENT ( µA) –50 –25 0 25 50 75 100 125 VCC = +5V Thermal Response in Still Air vs.Time TIME (SEC.) 125 100 PERCENT OF FINAL VALUE (%) 0 20 40 60 80 100

PRELIMINARY INFORMATIONPRECISION TEMPERATURE- TO -VOLTAGE CONVERTERS TC02/03-04 6/18/97 MARKING SOT-23B-3 TO-92-3 a & b = part number code and temperature range TC02VNB = AA – 20°C to 125°C TC03VNB = AB – 20°C to 100°C ex: 02 = uuuu ex: 03 = uuuu c = year and quarter d = lot ID A B A A a & b = TC (fixed) c, d & e = blank f, g, h & i = part number j = temperature range C = – 20°C to +125°C D = – 20°C to +100°C k, l, m, n & o = traceability code TAPING FORMS W User Direction of Feed User Direction of Feed Device Marking Device Marking PIN 1 PPIN 1 Standard Reel Component Orientation for 713 or TR Suffix Device (Mark Right Side Up) Reverse Reel Component Orientation for 723 or RT Suffix Device (Mark Upside Down) Tape & Reel Specifications Table Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size 3L SOT-23B 8 mm 4 mm 3000 7 SOT-23B-3

TAPING FORMS (Cont.) Component Taping Orientation for TO-92 Mark Face Mark Face User Direction of Feed User Direction of Feed WW P P Standard Reel Component Orientation for 713 or TR Suffix Device Reverse Reel Component Orientation for 723 or RT Suffix Device Seal Tape Back Tape Seal Tape Back Tape M ARK FACE M ARK FACE M ARK FACE M ARK FACE M ARK FACE M ARK FACE Tape & Reel Specifications Table Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size TO-92-3 18 mm 12.7 mm 2000 13

PRELIMINARY INFORMATIONPRECISION TEMPERATURE- TO -VOLTAGE CONVERTERS TC02/03-04 6/18/97 Dimensions: inches (mm) PACKAGE DIMENSIONS *SOT-23B-3 *NOTE: SOT-23B-3 is equivalent to JEDEC (TO-236) .021 (0.54) .015 (0.37) .055 (1.40) .047 (1.20) .103 (2.64) .083 (2.10) .120 (3.05) .105 (2.67) .007 (0.18) .003 (0.085) .010 (0.25) .005 (0.13) .040 (0.60) .017 (0.44) .004 (0.10) .001(0.02) .040 (1.02) .031 (0.79) .080 (2.05) .070 (1.78) 8° MAX. TO-92-3 .105 (2.67) .095 (2.41) .018 (0.46) .015 (0.38) .135 (3.43) MIN. .500 (12.70) MIN. .210 (5.33) .170 (4.32) .205 (5.21) .175 (4.45) .165 (4.19) .125 (3.18) .105 (2.67) .080 (2.03) .055 (1.40) .045 (1.14) .018 (0.46) .015 (0.38) TelCom Semiconductor H.K. Ltd.

10 Sam Chuk Street, Ground Floor

San Po Kong, Kowloon Hong Kong TEL: 852-2324-0122 FAX: 852-2354-9957 Sales Offices TelCom Semiconductor

1300 Terra Bella Avenue

P.O. Box 7267 Mountain View, CA 94039-7267 TEL: 415-968-9241 FAX: 415-967-1590 E-Mail: liter@c2smtp.telcom-semi.com TelCom Semiconductor Austin Product Center 9101 Burnet Rd. Suite 214 Austin, TX 78758 TEL: 512-873-7100 FAX: 512-873-8236 Printed in the U.S.A