TC1047/TC1047A Precision Temperature-to-Voltage Converter Features General Description • Supply Voltage Range: - TC1047: 2.7V to 4.4V - TC1047A: 2.5V to 5.5V • Wide Temperature Measurement Range: -40oC to +125oC • High Temperature Converter Accuracy: ± 2oC, Max, at 25°C • Linear Temperature Slope 10mV/°C (typ.) • Available in 3-Pin SOT-23B Package • Very Low Supply Current: - 35µA Typical The TC1047 and TC1047A are linear voltage output temperature sensors whose output voltage is directly proportional to the measured temperature. The TC1047 and TC1047A can accurately measure temperature from -40°C to +125°C. With the TC1047, the supply voltage can vary between 2.7V and 4.4V. The power supply range of the TC1047A is from 2.5V to 5.5V. Applications • • • • • • • Cellular Phones Power Supply Thermal Shutdown Temperature Controlled Fans Temperature Measurement/Instrumentation Temperature Regulators Consumer Electronics Portable Battery Powered Equipment The output voltage range for these devices is typically 100mV at -40°C, 500mV at 0°C, 750mV at +25°C, and 1.75V at +125°C. A 10mV/°C voltage slope output response allows for a predictable temperature measurement over a wide temperature range. The TC1047 and TC1047A are packaged in 3-Pin SOT-23B packages, making them ideal for space critical applications. Block Diagram VDD = 2.5V to 5.5V PICmicro® Microcontroller VDD Device Selection Table Part Number Package Temp. Range TC1047VNB 3-Pin SOT-23B -40°C to +125°C TC1047AVNB 3-Pin SOT-23B -40°C to +125°C TC1047A A/D Converter VSS Package Type 3-Pin SOT-23B* VSS 3 TC1047 TC1047A 1 2 VDD VOUT Note: * 3-Pin SOT-23B is equivalent to JEDEC TO-236 2002 Microchip Technology Inc. DS21498B-page 1 TC1047/TC1047A 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings* Supply Voltage ......................................................+7V *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 operation sections of the specifications is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Voltage on Any Pin with Respect to Supplies ..................................................VSS -0.3 to VDD +0.3V Operating Temperature ...................... -40°C to +125°C Storage Temperature Range .............. -55°C to +150°C TC1047/1047A ELECTRICAL SPECIFICATIONS Electrical Characteristics: Unless otherwise specified, these specifications apply for the entire supply voltage range and for TA = -40°C to +125°C Symbol Parameter Min Typ Max Units VDD Supply Voltage 2.7 2.5 — — 4.4 5.5 V IQ Supply Current, Operating — 35 60 µA Test Conditions TC1047 TC1047A AV Average Slope of Output Voltage — 10 — mV/°C TMPACY Temperature Accuracy -2 -3 — ±0.5 ±0.5 1.0 +2 +3 — °C °C °C TA = 25°C TA = +125°C TA = -40°C VOUT Output Voltage — 730 1720 100 750 1750 — 770 1780 mV mV mV TA = -40°C TA = 25°C TA = +125°C IOUT Output Source and Sink Current 100 — — µA DS21498B-page 2 2002 Microchip Technology Inc. TC1047/TC1047A 2.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 2-1. TABLE 2-1: PIN FUNCTION TABLE Pin No. (3-Pin SOT-23B) Symbol Description 1 VDD Input Supply Voltage 2 VOUT Temperature Sensor Output Terminal 3 VSS 2002 Microchip Technology Inc. Ground Terminal DS21498B-page 3 TC1047/TC1047A 3.0 DETAILED DESCRIPTION The TC1047 and TC1047A have an output voltage that varies linearly with temperature in degrees Celsius. Figure 3-1 shows a plot of the output voltage versus temperature for the TC1047 and TC1047A. The temperature slope is fixed at 10mV/°C, and the output voltage at 0°C is 500mV. FIGURE 3-1: OUTPUT VOLTAGE VS. TEMPERATURE VOUT = (10mV/˚C) CTemperature ˚C) + 500mV 1.75 1.7 VOUT (Volts) 1.5 1.3 1.1 0.9 0.7 0.5 0.3 0.1 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 125 TEMPERATURE (°C) DS21498B-page 4 2002 Microchip Technology Inc. TC1047/TC1047A 4.0 Note: TYPICAL CHARACTERISTICS The graphs provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed. In some graphs, the data presented may be outside the specified operating range (e.g., outside specified power supply range) and therefore outside the warranted range. FIGURE 4-1: TEMPERATURE ACCURACY VS. TEMPERATURE 3 2 TEMP ACCY (˚C) 1 VDD = 2.5V 0 VDD = 5.5V -1 -2 -3 -40 -25 -10 5 35 20 50 65 80 95 110 80 95 110 125 TEMPERATURE (°C) FIGURE 4-2: SUPPLY CURRENT VS. TEMPERATURE 50 VDD = 5.5V 40 IDD (µA) VDD = 2.5V 30 20 10 0 -40 -25 -10 5 20 35 50 65 125 TEMPERATURE (°C) 2002 Microchip Technology Inc. DS21498B-page 5 TC1047/TC1047A 5.0 PACKAGE INFORMATION 5.1 Package Marking Information 3-Pin SOT-23B 1 & 2 = part number code + temperature range and voltage Part Number Code TCM1047 AL TCM1047A BL 3 = year and quarter code 4 = lot ID number DS21498B-page 6 2002 Microchip Technology Inc. TC1047/TC1047A 5.2 Taping Form Component Taping Orientation for 3-Pin SOT-23B (JEDEC TO-236) Devices User Direction of Feed Device Marking W PIN 1 P Standard Reel Component Orientation For TR Suffix Device (Mark Right Side Up) Carrier Tape, Number of Components Per Reel and Reel Size Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size 8 mm 4 mm 3000 7 in 3-Pin SOT-23B 5.3 Package Dimensions 3-Pin SOT-23B .021 (0.54) .015 (0.37) .055 (1.40) .047 (1.20) .104 (2.64) .083 (2.10) .024 (0.60) .017 (0.44) .120 (3.05) .105 (2.67) .007 (0.18) .003 (0.08) 8° MAX. .040 (1.02) .031 (0.79) .004 (0.10) .001 (0.02) .081 (2.05) .070 (1.78) .010 (0.25) .005 (0.13) Dimensions: inches (mm) 2002 Microchip Technology Inc. DS21498B-page 7 TC1047/TC1047A NOTES: DS21498B-page 8 2002 Microchip Technology Inc. TC1047/TC1047A PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office. PART NO. X Device Temperature Range Examples: Device: DSTEMP: High Precision Temp-to-Voltage Converter DSTEMPxTR: High Precision Temp-to-Voltage Converter (Tape and Reel) Temperature Range: V= Package: NB = 3-pin SOT-23B a) DSTEMPVNBTR: High Precision Temp-toVoltage Converter -40°C to +125°C SALES AND SUPPORT Data Sheets Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recommended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following: 1. 2. 3. Your local Microchip sales office The Microchip Corporate Literature Center U.S. FAX: (480) 792-7277 The Microchip Worldwide Site (www.microchip.com) Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using. New Customer Notification System Register on our web site (www.microchip.com/cn) to receive the most current information on our products. 2002 Microchip Technology Inc. DS21498B-page 9 TC1047/TC1047A NOTES: DS21498B-page 10 2002 Microchip Technology Inc. TC1047/TC1047A Information contained in this publication regarding device applications and the like is intended through suggestion only and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. No representation or warranty is given and no liability is assumed by Microchip Technology Incorporated with respect to the accuracy or use of such information, or infringement of patents or other intellectual property rights arising from such use or otherwise. Use of Microchip’s products as critical components in life support systems is not authorized except with express written approval by Microchip. No licenses are conveyed, implicitly or otherwise, under any intellectual property rights. Trademarks The Microchip name and logo, the Microchip logo, FilterLab, KEELOQ, microID, MPLAB, PIC, PICmicro, PICMASTER, PICSTART, PRO MATE, SEEVAL and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. dsPIC, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB, In-Circuit Serial Programming, ICSP, ICEPIC, microPort, Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM, MXDEV, PICC, PICDEM, PICDEM.net, rfPIC, Select Mode and Total Endurance are trademarks of Microchip Technology Incorporated in the U.S.A. Serialized Quick Turn Programming (SQTP) is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. © 2002, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. 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