Texas Instruments TMP100, TMP101 Schematic [ru]

SBOS231G − JANUARY 2002 − REVISED NOVEMBER 2007

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments

Digital Temperature Sensor

with I2Ct Interface

TMP100
TMP101

FEATURES

D DIGITAL OUTPUT: I
D RESOLUTION: 9- to 12-Bits, User-Selectable
D ACCURACY:

±2.0°C from −25°C to +85°C (max)
±3.0°C from −55°C to +125°C (max)

D LOW QUIESCENT CURRENT:

45µA, 0.1µA Standby

D WIDE SUPPLY RANGE: 2.7V to 5.5V
D TINY SOT23-6 PACKAGE

2

C Serial 2-Wire

APPLICATIONS

D POWER-SUPPLY TEMPERATURE

MONITORING

D COMPUTER PERIPHERAL THERMAL

PROTECTION

D NOTEBOOK COMPUTERS
D CELL PHONES
D BATTERY MANAGEMENT
D OFFICE MACHINES
D THERMOSTAT CONTROLS
D ENVIRONMENTAL MONITORING AND HVAC
D ELECTROMECHANICAL DEVICE

TEMPERATURE

DESCRIPTION

The TMP100 and TMP101 are two-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
interface 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.

2

C

Temperature

Diode

1

2

3

Temp.

Sensor

∆Σ

A/D

Converter

OSC

TMP100

SCL

GND

ADD1

semiconductor products and disclaimers thereto appears at the end of this data sheet.

I2C is a trademark of NXP Semiconductors. All other trademarks are the property of their respective owners.

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Control

Logic

Serial

Interface

Config

and Temp

Register

6

SDA

5

ADD0

4

V+

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Temperature

SCL

GND

ALERT

Diode

1

Tem p.

Sensor

∆Σ

2

A/D

Converter

3

OSC

TMP101

Copyright  2002−2007, Texas Instruments Incorporated

Control

Logic

Serial

Interface

Config

and Temp

Register

6

SDA

5

ADD0

4

V+

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TMP100

SOT23-6

DBV

T100

TMP101

SOT23-6

DBV

T101

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SBOS231G − JANUARY 2002 − REVISED NOVEMBER 2007

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This integrated circuit can be damaged by ESD. Texas
Instruments recommends that all integrated circuits be
handled with appropriate precautions. Failure to observe

(1)

(1)

−0.5V to 7.5V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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 t o damage because very small parametric changes could
cause the device not to meet its published specifications.

ABSOLUTE MAXIMUM RATINGS

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 (TJ max) +150°C. . . . . . . . . . . . . . . . . . . . . .

ESD Rating, Human Body Model 2000V. . . . . . . . . . . . . . . . . . . . .

(1)

Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods
may degrade device reliability. These are stress ratings only , an d
functional operation of the device at these or any other conditions
beyond those specified is not supported.

(2)

Input voltage rating applies to all TMP100 and TMP101 input
voltages.

(2)

Machine Model 200V. . . . . . . . . . . . . . . . . . . . . . .

ORDERING INFORMATION

PRODUCT PACKAGE-LEAD PACKAGE DESIGNATOR PACKAGE MARKING

(1)

For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site
at www .ti.com.

PIN CONFIGURATION

Top View SOT23 Top View SOT23

SCL

GND

ADD1

1
2
3

T100

TMP100

SDA

6
5

ADD0

4

V+

SCL

GND

ALERT

1
2
3

T101

TMP101

6

SDA

5

ADD0

4

V+

2

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PARAMETER

TEST CONDITIONS

UNIT

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SBOS231G − JANUARY 2002 − REVISED NOVEMBER 2007

ELECTRICAL CHARACTERISTICS

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

TMP100, TMP101

MIN TYP MAX

TEMPERATURE INPUT

Range −55 +125 °C
Accuracy (temperature error) −25°C to +85°C ±0.5 ±2.0 °C

−55°C to +125°C ±1.0 ±3.0 °C

Resolution Selectable ±0.0625 °C

DIGIT AL INPUT/OUTPUT

Input Logic Levels:

V

IH

V

IL

Input Current, I

Output Logic Levels:

VOL SDA IOL = 3mA 0 0.15 0.4 V

VOL ALERT IOL = 4mA 0 0.15 0.4 V
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 q

IN

Q

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

SD

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

JA

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 200 °C/W

0.7(V+) 6.0 V

−0.5 0.3(V+) V

3

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SBOS231G − JANUARY 2002 − REVISED NOVEMBER 2007

TYPICAL CHARACTERISTICS

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

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70

60

A)

µ

50

(

Q

I

40

30

400

350

300

Conversion Time (ms)

250

−60−40−

−60−40−

QUIESCENT CURRENTvs TEMPERATURE

V+=5V

Serial Bus Inactive

200 20406080100120140

Temperature (_C)

CONVERSION TIME vsTEMPERATURE

V+ = 5V

V+ = 2.7V

NOTE: 12−bit resolution.

200 20406080100120140

Temperature (_C)

V+=2.7V

1.0

0.9

0.8

0.7

0.6

A)

0.5

µ

(

0.4

SD

I

0.3

0.2

0.1

0.0

−

0.1

2.0

1.5

C)

1.0

_

0.5

0.0

−

0.5

−

1.0

Temperature Error(

−

1.5

−

2.0

SHUTDOWN CURRENT vs TEMPERATURE

−60−40−

3 Typical Units

−60−40−

20 0 20 40 60 80 100 120 140

Temperature (_C)

TEMPERATURE ACCURACY vs TEMPERATURE

NOTE: 12−bit resoluti on.

20 0 20 40 60 80 100 120 140

Temperature (_C)

QUIESCENT CURRENTWITH

180
160
140
120
100

A)

µ

(

Q

80

I

60
40
20

FAST MODE Hs MODE

0

10k 100k 1M 10M

BUS ACTIVITY vs TEMPERATURE

125_C

25_C

−55_

C

SCL Frequency (Hz)

125_C

−55_

25_C

C

4

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SBOS231G − JANUARY 2002 − REVISED NOVEMBER 2007

APPLICATIONS INFORMATION

The TMP100 and TMP101 are digital temperature sensors
optimal for thermal management and thermal protection
applications. The TMP100 and TMP101 are I2C and
SMBus 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+

4

1

SCL

2

To I

Controller

C

SDA

6

TMP101

2

GND

Figure 1. Typical Connections of the TMP101

0.1µF

3

5

NOTE: (1) SCL, SDA and ALERT
require pull−up resistorsfor

2

C bus applications.

I

ALERT
(Output)

ADD0
(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.

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 1 identifies the bits of the
Pointer Register byte. Table 2 describes the pointer
address of the registers available in the TMP100 and
TMP101. Power-up Reset value of P1/P0 is 00.

Pointer

Register

Temperature

Register

Configuration

Register

T

LOW

Register

I/O

Control

Interface

SCL

SDA

V+

0.1µF

3

5

NOTE: (1) SCL andSDA
require pull−up resistorsfor

2

C bus applications.

I

ADD1
(Input)

ADD0
(Input)

2

To I

Controller

4

1

SCL

C

SDA

6

TMP100

2

GND

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.

T

HIGH

Register

Figure 3. Internal Register Structure of the

TMP100 and TMP101

Table 1. Pointer Register Type

P7 P6 P5 P4 P3 P2 P1 P0

0 0 0 0 0 0 Register Bits

Table 2. Pointer Addresses of the TMP100 and

TMP101 Registers

P1 P0 REGISTER

0 0 Temperature Register (READ O n l y )
0 1 Configuration Register (READ/WRITE)
1 0 T
1 1 T

Register (READ/WRITE)

LOW

Register (READ/WRITE)

HIGH

TEMPERATURE REGISTER

The Temperature Register of the TMP100 or TMP101 is a
12-bit 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 3 and Table 4. The first 12 bits
are used to indicate temperature with all remaining bits

5

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SBOS231G − JANUARY 2002 − REVISED NOVEMBER 2007

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equal to zero. Data format for temperature is summarized
in Table 5. Following power-up or reset, the Temperature
Register will read 0°C until the first conversion is complete.

Table 3. Byte 1 of Temperature Register

D7 D6 D5 D4 D3 D2 D1 D0

T11 T10 T9 T8 T7 T6 T5 T4

Table 4. Byte 2 of Temperature Register

D7 D6 D5 D4 D3 D2 D1 D0

T3 T2 T1 T0 0 0 0 0

Table 5. Temperature Data Format

TEMPERATURE

(°C)

128 0111 1111 1111 7FF

127.9375 0111 1111 1111 7FF
100 0110 0100 0000 640

80 0101 0000 0000 500
75 0100 101 1 0000 4B0
50 001 1 0010 0000 320
25 0001 1001 0000 190

0.25 0000 0000 0100 004

0.0 0000 0000 0000 000

−0.25 1111 1111 1100 FFC

−25 1110 0111 0000 E70

−55 1100 1001 0000 C90

−128 1000 0000 0000 800

DIGIT AL OUTPUT

(BINARY)

HEX

The user can obtain 9, 10, 11, or 12 bits of resolution by
addressing the Configuration Register and setting the
resolution bits accordingly. For 9-, 10-, or 11-bit resolution,
the most significant bits in the Temperature Register are
used with the unused LSBs set to zero.

CONFIGURATION REGISTER

The Configuration Register is an 8-bit read/write register
used to store bits that control the operational modes of the
temperature sensor. Read/write operations are performed
MSB first. The format of the Configuration Register for the
TMP100 and TMP101 is shown in Table 6, followed by a
breakdown of the register bits. The power-up/reset value
of the Configuration Register is all bits equal to 0. The
OS/ALERT bit will read as 1 after power-up/reset.

Table 6. Configuration Register Format

BYTE D7 D6 D5 D4 D3 D2 D1 D0

1 OS/ALERT R1 R0 F1 F0 POL TM SD

SHUTDOWN MODE (SD)

The Shutdown Mode of the TMP100 and TMP101 allows
the user to save maximum power by shutting down all
device circuitry other than the serial interface, which
reduces current consumption to less than 1µA. For the
TMP100 and TMP101, Shutdown Mode is enabled when

the SD bit is 1. The device will shutdown once the current
conversion is completed. For SD equal to 0, the device will
maintain continuous conversion.

THERMOSTAT MODE (TM)

The Thermostat Mode bit of the TMP101 indicates to the
device whether to operate in Comparator Mode (TM = 0)
or Interrupt Mode (TM = 1). For more information on
comparator and interrupt modes, see the HIGH and LOW
Limit Registers section.

POLARITY (POL)

The Polarity Bit of the TMP101 allows the user to adjust the
polarity of the ALERT pin output. If POL = 0, the ALER T pin
will be active LOW, as shown in Figure 4. For POL = 1 the
ALERT pin will be active HIGH, and the state of the ALERT
pin is inverted.

T

Read

T

HIGH

LOW

Measured

Temperature

TMP101 ALERT PIN

(Comparator Mode)

POL = 0

TMP101 ALERT PIN

(Interrupt Mode)

POL = 0

TMP101 ALERT PIN

(Comparator Mode)

POL = 1

TMP101 ALERT PIN

(Interrupt Mode)

POL = 1

Read Read

Time

Figure 4. Output Transfer Function Diagrams

FAULT QUEUE (F1/F0)

A fault condition occurs when the measured temperature
exceeds the user-defined limits set in the T
Registers. Additionally, the number of fault conditions
required to generate an alert may be programmed using
the Fault Queue. The Fault Queue is provided to prevent
a false alert due to environmental noise. The Fault Queue
requires consecutive fault measurements in order to
trigger the alert function. If the temperature falls below
T

, prior to reaching the number of programmed

LOW

consecutive faults limit, the count is reset to 0. Table 7
defines the number of measured faults that may be
programmed to trigger an alert condition in the device.

HIGH

and T

LOW

6