TEXAS INSTRUMENTS TMP100, TMP101 Technical data

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TMP100
TMP101

SBOS231C – JANUARY 2002 – REVISED JULY 2003

Digital Temperature Sensor

with I2C Interface

FEATURES

● DIGITAL OUTPUT: I2C Serial 2-Wire

● RESOLUTION: 9- to 12-Bits, User-Selectable

● ACCURACY: ±2.0°C from –25°C to +85°C (max)

±

3.0°C from –55°C to +125°C (max)

● LOW QUIESCENT CURRENT: 45µA, 0.1µA Standby

● WIDE SUPPLY RANGE: 2.7V to 5.5V

● TINY SOT23-6 PACKAGE

APPLICATIONS

● POWER-SUPPLY TEMPERATURE MONITORING

● COMPUTER PERIPHERAL THERMAL PROTECTION

● NOTEBOOK COMPUTERS

● CELL PHONES

● BATTERY MANAGEMENT

● OFFICE MACHINES

● THERMOSTAT CONTROLS

● ENVIRONMENTAL MONITORING and HVAC

● ELECTROMECHANICAL DEVICE TEMPERATURE

DESCRIPTION

The TMP100 and TMP101 are 2-wire, serial output tempera­ture sensors available in SOT23-6 packages. Requiring no
external components, the TMP100 and TMP101 are capable
of reading temperatures with a resolution of 0.0625°C.

The TMP100 and TMP101 feature SMBus and I
face compatibility, with the TMP100 allowing up to eight
devices on one bus. The TMP101 offers SMBus alert func­tion with up to three devices per bus.

The TMP100 and TMP101 are ideal for extended tempera­ture measurement in a variety of communication, computer,
consumer, environmental, industrial, and instrumentation
applications.

The TMP100 and TMP101 are specified for operation over a
temperature range of –55°C to +125°C.

I2C is a registered trademark of Philips Incorporated.

2

C™ inter-

Temperature

Diode

1

2

3

Temp.

Sensor

∆Σ

A/D

Converter

OSC

TMP100

SCL

GND

ADD1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.

Control

Logic

Serial

Interface

Config

and T emp

Register

6

5

4

SDA

ADD0

V+

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Temperature

SCL

GND

ALERT

Diode

1

Temp.

Sensor

∆Σ

2

A/D

Converter

3

OSC

TMP101

Copyright © 2002-2003, Texas Instruments Incorporated

Control

Logic

Serial

Interface

Config

and T emp

Register

6

SDA

5

ADD0

4

V+

ABSOLUTE MAXIMUM RATINGS

SCL

GND

ALERT

SDA
ADD0
V+

1
2
3

6
5
4

T101

Power Supply, V+ ............................................................................... 7.5V

Input Voltage

Operating Temperature Range ......................................–55°C to +125°C

Storage Temperature Range ......................................... –60°C to +150°C

Junction Temperature (T

Lead Temperature (soldering)....................................................... +300°C

NOTES: (1) Stresses above those listed under “Absolute Maximum Ratings”
may cause permanent damage to the device. Exposure to absolute maximum
conditions for extended periods may affect device reliability. (2) Input voltage
rating applies to all TMP100 and TMP101 input voltages.

(2)

.................................................................... –0.5V to 7.5V

Max) .................................................... +150°C

J

(1)

ELECTROSTATIC
DISCHARGE SENSITIVITY

This integrated circuit can be damaged by ESD. Texas Instru­ments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.

ESD damage can range from subtle performance degradation
to complete device failure. Precision integrated circuits may be
more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.

PACKAGE/ORDERING INFORMATION

PRODUCT PACKAGE-LEAD DESIGNATOR

PACKAGE TEMPERATURE PACKAGE ORDERING TRANSPORT

TMP100 SOT23-6 DBV –55°C to +125°C T100 TMP100NA/250 Tape and Reel, 250

(1)

"" "" "TMP100NA/3K Tape and Reel, 3000

TMP101 SOT23-6 DBV –55°C to +125°C T101 TMP101NA/250 Tape and Reel, 250

"" "" "TMP101NA/3K Tape and Reel, 3000

NOTE: (1) For the most current specifications and package information, refer to our web site at www.ti.com.

SPECIFIED

RANGE MARKING NUMBER MEDIA, QUANTITY

PIN CONFIGURATIONS

Top View SOT23 Top View SOT23

T100

SCL

GND

ADD1

1
2
3

TMP100 TMP101

6

SDA

5

ADD0

4

V+

2

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TMP100, 101

SBOS231C

ELECTRICAL CHARACTERISTICS

At TA = –55°C to +125°C, and V+ = 2.7V to 5.5V, unless otherwise noted.

TMP100, TMP101

PARAMETER CONDITION MIN TYP MAX UNITS
TEMPERATURE INPUT

Range –55 +125 °C
Accuracy (Temperature Error) –25°C to +85°C ±0.5 ±2.0 °C

Resolution Selectable ±0.0625 °C

DIGITAL INPUT/OUTPUT

Input Logic Levels:

V

IH

V

IL

Input Current, I

Output Logic Levels:

V

SDA IOL = 3mA 0 0.15 0.4 V

OL

V

ALERT IOL = 4mA 0 0.15 0.4 V

OL

Resolution Selectable 9 to 12 Bits
Conversion Time 9-Bit 40 75 ms

Conversion Rate 9-Bit 25 s/s

POWER SUPPLY

Operating Range 2.7 5.5 V
Quiescent Current I

Shutdown Current I

TEMPERATURE RANGE

Specified Range –55 +125 °C
Storage Range –60 +150 °C
Thermal Resistance,

IN

Q

Serial Bus Active, SCL Freq = 400kHz 70 µA
Serial Bus Active, SCL Freq = 3.4MHz 150 µA

SD

Serial Bus Active, SCL Freq = 400kHz 20 µA
Serial Bus Active, SCL Freq = 3.4MHz 100 µA

θ

JA

–55°C to +125°C ±1.0 ±3.0 °C

0.7(V+) 6.0 V
–0.5 0.3(V+) V

0V ≤ VIN ≤ 6V 1 µA

10-Bit 80 150 ms
11-Bit 160 300 ms
12-Bit 320 600 ms

10-Bit 12 s/s
11-Bit 6 s/s
12-Bit 3 s/s

Serial Bus Inactive 45 75 µA

Serial Bus Inactive 0.1 1 µA

SOT23-6 Surface-Mount 150 °C/W

TMP100, 101

SBOS231C

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TYPICAL CHARACTERISTICS

At TA = +25°C, V+ = 5.0V, unless otherwise noted.

70

60

50

(µA)

Q

I

40

30

400

350

300

Conversion Time (ms)

250

QUIESCENT CURRENT vs TEMPERATURE

V+ = 5V

V+ = 2.7V

Serial Bus Inactive

–60 –40 –20 0 20 40 60 80 100 120 140

Temperature (°C)

CONVERSION TIME vs TEMPERATURE

V+ = 5V

V+ = 2.7V

NOTE: 12-bit resolution.

–60 –40 –20 0 20 40 60 80 100 120 140

Temperature (°C)

1.0

0.9

0.8

0.7

0.6

0.5

(µA)

0.4

SD

I

0.3

0.2

0.1

0.0

–0.1

2.0

1.5

1.0

0.5

0.0

–0.5
–1.0

Temperature Error (°C)

–1.5
–2.0

SHUTDOWN CURRENT vs TEMPERATURE

–60 –40 –20 0 20 40 60 80 100 120 140

Temperature (°C)

TEMPERATURE ACCURACY vs TEMPERATURE

3 Typical Units

–60 –40 –20 0 20 40 60 80 100 120 140

Temperature (°C)

NOTE: 12-bit resolution.

QUIESCENT CURRENT WITH

180
160
140
120
100

(µA)

Q

80

I

60
40
20

FAST MODE Hs MODE

0

10k 100k 1M 10M

4

BUS ACTIVITY vs TEMPERATURE

125°C

25°C

–55°C

SCL Frequency (Hz)

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125°C

25°C

–55°C

TMP100, 101

SBOS231C

APPLICATIONS INFORMATION

The TMP100 and TMP101 are digital temperature sensors
optimal for thermal management and thermal protection
applications. The TMP100 and TMP101 are I
interface compatible and are specified over a temperature
range of –55°C to +125°C.

The TMP100 and TMP101 require no external components
for operation except for pull-up resistors on SCL, SDA, and
ALERT, although a 0.1µF bypass capacitor is recommended,
as shown in Figure 1 and Figure 2.

V+

2

C and SMBus

POINTER REGISTER

Figure 3 shows the internal register structure of the TMP100
and TMP101. The 8-bit Pointer Register of the TMP100 and
TMP101 is used to address a given data register. The Pointer
Register uses the two LSBs to identify which of the data
registers should respond to a read or write command. Table
I identifies the bits of the Pointer Register byte. Table II
describes the pointer address of the registers available in the
TMP100 and TMP101. Power-up Reset value of P1/P0 is 00.

Pointer

Register

0.1µF

3

5

NOTE: (1) SCL, SDA and ALERT
require pull-up resistors for

2

I

C bus applications.

ALERT
(Output)

ADD0
(Input)

To I

Controller

4
SCL
SDA

1

6

TMP101

2

GND

2

C

FIGURE 1. Typical Connections of the TMP101.

V+

0.1µF

3

5

NOTE: (1) SCL and SDA
require pull-up resistors for

2

I

C bus applications.

ADD1
(Input)

ADD0
(Input)

To I

Controller

4
SCL
SDA

1

6

TMP100

2

GND

2

C

FIGURE 2. Typical Connections of the TMP100.

The die flag of the lead frame is connected to pin 2. The
sensing device of the TMP100 and TMP101 is the chip itself.
Thermal paths run through the package leads as well as the
plastic package. The lower thermal resistance of metal causes
the leads to provide the primary thermal path. The GND pin
of the TMP100 or TMP101 is directly connected to the metal
lead frame, and is the best choice for thermal input.

To maintain the accuracy in applications requiring air or
surface temperature measurement, care should be taken to
isolate the package and leads from ambient air temperature.
A thermally conductive adhesive will assist in achieving
accurate surface temperature measurement.

Temperature

Register

Configuration

Register

T

LOW

Register

T

HIGH

Register

I/O

Control

Interface

SCL

SDA

FIGURE 3. Internal Register Structure of TMP100 and TMP101.

P7 P6 P5 P4 P3 P2 P1 P0

0 0 0 0 0 0 Register Bits

TABLE I. Pointer Register Byte.

P1 P0 REGISTER

0 0 Temperature Register (READ Only)
0 1 Configuration Register (READ/WRITE)
10T
11T

Register (READ/WRITE)

LOW

Register (READ/WRITE)

HIGH

TABLE II. Pointer Addresses of the TMP100 and TMP101

Registers.

TEMPERATURE REGISTER

The Temperature Register of the TMP100 or TMP101 is a 12­bit read-only register that stores the output of the most recent
conversion. Two bytes must be read to obtain data and are
described in Table III and Table IV. The first 12 bits are used
to indicate temperature with all remaining bits equal to zero.
Data format for temperature is summarized in Table V.
Following power-up or reset, the Temperature Register will
read 0°C until the first conversion is complete.

D7 D6 D5 D4 D3 D2 D1 D0

T11 T10 T9 T8 T7 T6 T5 T4

TABLE III. Byte 1 of Temperature Register.

D7 D6 D5 D4 D3 D2 D1 D0

T3 T2 T1 T0 0 0 0 0

TABLE IV. Byte 2 of Temperature Register.

TMP100, 101

SBOS231C

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