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TC1047/TC1047A
Precision Temperature-to-Voltage Converter
Features
* 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 25C * Linear Temperature Slope 10mV/C (typ.) * Available in 3-Pin SOT-23B Package * Very Low Supply Current: - 35A Typical
General Description
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 -40C to +125C. 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. The output voltage range for these devices is typically 100mV at -40C, 500mV at 0C, 750mV at +25C, and 1.75V at +125C. 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.
Applications
* * * * * * * Cellular Phones Power Supply Thermal Shutdown Temperature Controlled Fans Temperature Measurement/Instrumentation Temperature Regulators Consumer Electronics Portable Battery Powered Equipment
Block Diagram
VDD = 2.5V to 5.5V PICmicro(R) Microcontroller VDD
Device Selection Table
Part Number TC1047VNB TC1047AVNB Package 3-Pin SOT-23B 3-Pin SOT-23B Temp. Range -40C to +125C -40C to +125C
TC1047A
VSS
A/D Converter
Package Type
3-Pin SOT-23B*
VSS 3
TC1047 TC1047A
1 VDD 2 VOUT
Note: * 3-Pin SOT-23B is equivalent to JEDEC TO-236
2002 Microchip Technology Inc.
DS21498B-page 1
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TC1047/TC1047A
1.0 ELECTRICAL CHARACTERISTICS
*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.
Absolute Maximum Ratings*
Supply Voltage ......................................................+7V Voltage on Any Pin with Respect to Supplies ..................................................VSS -0.3 to VDD +0.3V Operating Temperature ...................... -40C to +125C Storage Temperature Range .............. -55C to +150C
TC1047/1047A ELECTRICAL SPECIFICATIONS
Electrical Characteristics: Unless otherwise specified, these specifications apply for the entire supply voltage range and for TA = -40C to +125C Symbol VDD IQ AV TMPACY Parameter Supply Voltage Supply Current, Operating Average Slope of Output Voltage Temperature Accuracy Min 2.7 2.5 -- -- -2 -3 -- -- 730 1720 100 Typ -- -- 35 10 0.5 0.5 1.0 100 750 1750 -- Max 4.4 5.5 60 -- +2 +3 -- -- 770 1780 -- Units V A mV/C C C C mV mV mV A TA = 25C TA = +125C TA = -40C TA = -40C TA = 25C TA = +125C Test Conditions TC1047 TC1047A
VOUT
Output Voltage
IOUT
Output Source and Sink Current
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TC1047/TC1047A
2.0 PIN DESCRIPTIONS
PIN FUNCTION TABLE Symbol VDD VOUT VSS Input Supply Voltage Temperature Sensor Output Terminal Ground Terminal Description The descriptions of the pins are listed in Table 2-1. TABLE 2-1:
Pin No. (3-Pin SOT-23B) 1 2 3
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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 0C is 500mV. FIGURE 3-1: OUTPUT VOLTAGE VS. TEMPERATURE
VOUT = (10mV/C) CTemperature C) + 500mV
1.75 1.7 1.5
VOUT (Volts)
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 TEMPERATURE (C) 125
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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. TEMPERATURE ACCURACY VS. TEMPERATURE
3
FIGURE 4-1:
2
TEMP ACCY (C)
1 VDD = 2.5V 0 VDD = 5.5V
-1
-2
-3 -40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (C)
FIGURE 4-2:
SUPPLY CURRENT VS. TEMPERATURE
50 VDD = 5.5V 40 VDD = 2.5V
IDD (A)
30
20
10
0 -40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE (C)
2002 Microchip Technology Inc.
DS21498B-page 5
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TC1047/TC1047A
5.0
5.1
PACKAGE INFORMATION
Package Marking Information
3-Pin SOT-23B
1 & 2 = part number code + temperature range and voltage Part Number TCM1047 TCM1047A 3 = year and quarter code 4 = lot ID number Code AL BL
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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
3-Pin SOT-23B
8 mm
4 mm
3000
7 in
5.3
Package Dimensions
3-Pin SOT-23B
.021 (0.54) .015 (0.37)
.104 (2.64) .083 (2.10)
.055 (1.40) .047 (1.20)
.024 (0.60) .017 (0.44)
.120 (3.05) .105 (2.67) 8 MAX. .010 (0.25) .005 (0.13) .007 (0.18) .003 (0.08)
.040 (1.02) .031 (0.79) .004 (0.10) .001 (0.02) .081 (2.05) .070 (1.78)
Dimensions: inches (mm)
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TC1047/TC1047A
NOTES:
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DS21498B-page 8
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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. Device X Temperature Range Examples:
a) DSTEMPVNBTR: High Precision Temp-toVoltage Converter
Device:
DSTEMP: High Precision Temp-to-Voltage Converter DSTEMPxTR: High Precision Temp-to-Voltage Converter (Tape and Reel)
Temperature Range:
V=
-40C to +125C
Package:
NB = 3-pin SOT-23B
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.
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TC1047/TC1047A
NOTES:
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DS21498B-page 10
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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. (c) 2002, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved.
Printed on recycled paper.
Microchip received QS-9000 quality system certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona in July 1999 and Mountain View, California in March 2002. The Company's quality system processes and procedures are QS-9000 compliant for its PICmicro (R) 8-bit MCUs, KEELOQ(R) code hopping devices, Serial EEPROMs, microperipherals, non-volatile memory and analog products. In addition, Microchip's quality system for the design and manufacture of development systems is ISO 9001 certified.
2002 Microchip Technology Inc.
DS21498B-page 11
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WORLDWIDE SALES AND SERVICE
AMERICAS
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03/01/02
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DS21498B-page 12
2002 Microchip Technology Inc.
*B89412SD*

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