MICROCHIP AD8517, AD8527 Technical data

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:

o

--40

C to +125oC

• High Temperature Converter Accuracy:

o

-± 2

C, Max, at 25°C

• Linear Temperature Slope: 10 mV/°C (typ.)

• Available in 3-Pin SOT-23B Package

• Very Low Suppl y Current:

-35µA Typical

Applications

• Cellular Phones

• Power Supply Thermal Shutdown

• Temperature-Controlled Fans

• Temperature Measurement/Instrumentation

• Temperature Regulators

• Consumer Electronics

• Portable Battery-Powered Equipment

Block Diagram

= 2.5V to 5.5V

V

DD

PICmicro

Microcontroller

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
temperatu re from -40°C to +125 °C. W ith 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
100 mV at -40°C, 500 mV at 0°C, 7 50 mV at +25°C and

1.75V at +125°C. A 10 mV/°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.

Package Type

3-Pin SOT-23B

TC1047/1047A

®

1

(NOTE)

V

SS

3

2

V

DD

TC1047A

V

SS

© 2005 Microchip Technology Inc. DS21498C-page 1

A/D

Converter

Note: 3-Pin SOT-23B is equivalent to JEDEC TO-236

V

DD

V

OUT

TC1047/TC1047A

1.0 ELECTRICAL CHARACTERISTICS

Absolute Maximum Ratings*

Supply Voltage ......................................................+7V

Voltage on Any Pin with Respect to Supplies:

..................................................V

Operating Temperature ......................-40°C to +125°C

Storage Temperature Range..............-55°C to +150°C

ELECTRICAL CHARACTERISTICS

Electrical Specifications: Unless otherwise indicated,

and for T

Supply Voltage V

Supply Current, Operating I
Average Slope of Output Voltage A
Temperature Accuracy TMP

Output V oltage V

Output Source and Sink Current I

= -40°C to +125°C.

A

Parameters Sym Min Typ Max Units Conditions

-0.3 to VDD +0.3V

SS

DD

Q

V

ACY

OUT

1720 1750 1780 mV T

OUT

2.7 — 4.4 V TC1047

2.5 — 5.5 V TC1047A
—3560µA
— 10 — mV/°C

-2 ±0.5 +2 °C TA = 25°C

-3 ±0.5 +3 °C TA = +125°C
—1.0— °CT
—100— mVTA = -40°C

730 750 770 mV TA = 25°C

100 — — µA

*Stresses above those listed under "Absolute Maximum Rat­ings" may cause permanent damage to the device. These are
stress ratings only and functional operation of t he 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.

these specifications apply for the entire supply voltage range

= -40°C

A

= +125°C

A

TEMPERATURE CHARACTERISTICS

Electrical Specifications: Unless otherwise indicated, V

Parameters Sym Min Typ Max Units Conditions

Temperature Ranges

Specified Temperature Range T
Operating Temperatu re Ra nge T
Storage Temperature Range T

-40 — +85 °C

A

-40 — +125 °C Note 1

A

-65 — +150 °C

A

Thermal Package Resistances

Thermal Resistan ce , 3L -SO T-23B θ

—336 — °C/W

JA

Note 1: The TC1047/TC1047A operate over this extended temperature range, but with reduced performa nce . In

any case, the Junction Temperatur e (T

) must not exceed the Absolute Maximum specification of +150°C.

J

= +2.3V to +5.5V and VSS= GND.

DD

DS21498C-page 2 © 2005 Microchip Technology Inc.

TC1047/TC1047A

5

2.0 TYPICAL PERFORMANCE CURVES

Note: The graphs and tables provided following this note are a statistical summary b as ed 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 or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.

Note: Unless otherwise indicated, VDD = 2.7V thru 4.4V

3

2

1

0

Temp Accy (°C)

–1

–2

–3

–40

–25

5

20

35

50

–10

Temperature (°C)

65

VDD = 2.5V

=

5.5V

V

DD

80

95

110

125

FIGURE 2-1: Temperature Accuracy vs. Temperature.

and TA = -40°C to +125°C.

50

40

30

(μA)

DD

I

20

10

0

-40 -25 -10 5 20 35 50 65 80 95 110 12

VDD = 5.5V

VDD = 2.5V

Temp. (°C)

FIGURE 2-2: Supply Current vs. Temperature.

© 2005 Microchip Technology Inc. DS21498C-page 3

TC1047/TC1047A

3.0 PIN DESCRIPTIONS

The descriptions of the pins are listed in Table 3-1.

TABLE 3-1: PIN FUNCTION TABLE

Pin No. Symbol Description

1V
2V
3V

DD

OUT

SS

4.0 DETAILED DESCRIPTION

The TC1047 and TC10 47A have an out put vol tage th at
varies linearly with temperature in degrees Celsius.
Figure 4-1 shows a plot of the output voltage versus
temperature for the TC1047 and TC1047A. The
temperature slope is fixed at 10 mV/°C and the output
voltage at 0°C is 500 mV.

V

Input Supp ly Voltage
Temperature Sensor Output Terminal
Ground Terminal

= (10 mV/°C) (Temperature °C) + 500 mV

OUT

1.75

1.7

1.5

1.3

1.1

(Volts)

0.9

OUT

V

0.7

0.5

0.3

0.1

–40

–30

–20 –10

0

10 20

30

40

T emperature (°C)

FIGURE 4-1: Output Voltage vs. Temperature.

50

60

70

80

90

100

110 120 125

DS21498C-page 4 © 2005 Microchip Technology Inc.

5.0 PACKAGE INFORMATION

5.1 Package Marking Information

3-Pin SOT-23B

!"#$

1 & 2 = part number co de + temperature range a nd
voltage

Part Number Code

TC1047 AL

TC1047A BL

3 = year and quarter code
4 = lot ID number

TC1047/TC1047A

Legend: XX...X Customer-specific information*

Y Year code (last digit of calendar year)
YY Year code (last 2 digits of calendar year)
WW Week code (week of January 1 is week ‘01’)
NNN Alphanumeric traceability code

3

e

Pb-free JEDEC designator for Matte Tin (Sn)
* This package is Pb-free. The Pb-free JEDEC designator ( )

can be found on the outer packaging for this package.

Note: In the event the full Microchip part numb er cann ot be mark ed on one line, it wil l

be carried over to the next line, thus limiting the number of available
characters for customer-specific information.

© 2005 Microchip Technology Inc. DS21498C-page 5

3

e

TC1047/TC1047A

3-Lead Plastic Small Outline Transistor (TT) (SOT-23)

E

E1

2

B

n

1

c

b

Number of Pins
Pitch
Outside lead pitch (basic)

Foot Angle
Lead Thickness

Mold Draft Angle Top

Mold Draft Angle Bottom
*Controll ing Parameter
Notes:

Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not
exceed .005" (0.127mm) per side.

JEDEC Equivalent: TO-236
Drawing No. C04-104

n
p

p1

f
c

a
b

p1

D

p

A

f

L

A1

.038

a

A2

MILLIMETERSINCHES*Units

MAXNOMMINMAXNOMMINDimension Limits

33

0.96

1.92.076

1.121.010.89.044.040.035AOverall Height

1.020.950.88.040.037.035A2Molded Package Thickness

0.100.060.01.004.002.000A1Standoff

2.642.372.10.104.093.083EOverall Width

1.401.301.20.055.051.047E1Molded Package Width

3.042.922.80.120.115.110DOverall Length

0.550.450.35.022.018.014LFoot Length
10501050

0.180.140.09.007.006.004

0.510.440.37.020.017.015BLead Width
10501050
10501050

Revised 03-11-05

DS21498C-page 6 © 2005 Microchip Technology Inc.

APPENDIX A: REVISION HISTORY

Revision C (May 2005)

The following is the list of modifications:

1. Added Appendix A: Revision History.

Revision B (May 2002)
Revision A (March 2001)

• Original Release of this Document.

TC1047/TC1047A

© 2005 Microchip Technology Inc. DS21498C-page 7

TC1047/TC1047A

NOTES:

DS21498C-page 8 © 2005 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

Device: TC1047: Precision Temp-to-Voltage Converter

Temperature Range: V = -40°C to +125°C

Package: NB = Plastic Small Outline Transistor, SOT-23B, 3-lead

Temperature

Range

TC1047xTR: Precision Temp-to-Voltage Converter

XX

Package

(Tape and Reel)

Examples:

a) TC1047VNBTR: Precision Temp-to-Volt-

age Converter

b) TC1047AVNBTR: Precision Temp-to-Volt-

age Converter

© 2005 Microchip Technology Inc. DS21498C-page 9

TC1047/TC1047A

NOTES:

DS21498C-page 10 © 2005 Microchip Technology Inc.

Note the following details of the code protection feature on Microchip devices:

• Microchip products meet the specification contained in their particular Microchip Data Sheet.

• Microchip believes that i ts family of products is one of the most secure families of its kind on t he market today, when used in the
intended manner and under normal conditions.

• There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.

• Microchip is willing to work with the customer who is concerned about the integrity of their code.

• Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”

Code protection is constantly evolving. We at Microchip are com mitted to continuously improving the code protect ion f eatures of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digit al Mill ennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.

Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR WAR­RANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED,
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RELATED TO THE INFORMATION, INCLUDING BUT NOT
LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE,
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Microchip disclaims all liability arising from this information and
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Trademarks

The Microchip name and logo, the Microchip logo, Accuron,
dsPIC, K

EELOQ, microID, MPLAB, PIC, PICmicro,

PICSTART, PRO MATE, PowerSma rt , rfPIC, and
SmartShunt are registered trademarks of Microchip
Technology Incorporated in the U.S.A. and other countries.

AmpLab, FilterLab, Migratable Memory, MXDEV , MXLAB,
PICMASTER, SEEVAL, SmartSensor and The Embedded
Control Solutions Company are registered trademarks of
Microchip Technology Incorporated in the U.S.A.

Analog-for-the-Digital Age, Application Maestro, dsPICDEM,
dsPICDEM.net, dsPICworks, ECAN, ECONOMONITOR,
FanSense, FlexROM, fuzzyLAB, In-Circuit Serial
Programming, ICSP, ICEPIC, Linear Active Thermistor,
MPASM, MPLIB, MPLINK, MPSIM, PIC kit, PICDEM,
PICDEM.net, PICLAB, PICtail, PowerCal, PowerInfo,
PowerMate, PowerTool, rfLAB, rfPICDEM, Select Mode,
Smart Serial, SmartTel, Total Endurance and WiperLock are
trademarks of Microchip Technology Incorporated in the
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SQTP is a service mark of Microchip T echnology Incorporated
in the U.S.A.

All other trademarks mentioned herein are property of their
respective companies.

© 2005, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.

Printed on recycled paper.

Microchip received ISO/TS-16949:2002 quality system certification for
its worldwide headquarters, design and wafer fabrication facilities in
Chandler and Tempe, Arizona and Mountain View, California in
October 2003. The Company’s quality system processes and
procedures are for its PICmicro
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.

®

8-bit MCUs, KEELOQ

®

code hopping

© 2005 Microchip Technology Inc. DS21498C-page 11

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DS21498C-page 12 © 2005 Microchip Technology Inc.