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TMP102のメーカーはBurr-Brown Corporationです、この部品の機能は「Low Power Digital Temperature Sensor」です。 |
部品番号 | TMP102 |
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部品説明 | Low Power Digital Temperature Sensor | ||
メーカ | Burr-Brown Corporation | ||
ロゴ | |||
このページの下部にプレビューとTMP102ダウンロード(pdfファイル)リンクがあります。 Total 19 pages
BurrĆBrown Products
from Texas Instruments
TMP102
SBOS397 – AUGUST 2007
Low Power Digital Temperature Sensor
With SMBus™/Two-Wire Serial Interface in SOT563
FEATURES
• TINY SOT563 PACKAGE
• ACCURACY: 0.5°C (–25°C to +85°C)
• LOW QUIESCENT CURRENT:
10μA Active (max)
1μA Shutdown (max)
• SUPPLY RANGE: 1.4V to 3.6V
• RESOLUTION: 12 Bits
• DIGITAL OUTPUT: Two-Wire Serial Interface
APPLICATIONS
• PORTABLE AND BATTERY-POWERED
APPLICATIONS
• POWER-SUPPLY TEMPERATURE
MONITORING
• COMPUTER PERIPHERAL THERMAL
PROTECTION
• NOTEBOOK COMPUTERS
• BATTERY MANAGEMENT
• OFFICE MACHINES
• THERMOSTAT CONTROLS
• ELECTROMECHANICAL DEVICE
TEMPERATURES
• GENERAL TEMPERATURE MEASUREMENTS:
Industrial Controls
Test Equipment
Medical Instrumentations
DESCRIPTION
The TMP102 is a two-wire, serial output temperature
sensor available in a tiny SOT563 package.
Requiring no external components, the TMP102 is
capable of reading temperatures to a resolution of
0.0625°C.
The TMP102 features SMBus and two-wire interface
compatibility, and allows up to four devices on one
bus. It also features an SMB alert function.
The TMP102 is ideal for extended temperature
measurement in a variety of communication,
computer, consumer, environmental, industrial, and
instrumentation applications. The device is specified
for operation over a temperature range of –40°C to
+125°C.
Temperature
SCL 1
Diode
Temp.
Sensor
Control
Logic
6 SDA
GND
2 DS
A/D
Converter
Serial
Interface
5
V+
ALERT
3
OSC
Config.
and Temp.
Register
4
ADD0
TMP102
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.
SMBus is a trademark of Intel, Inc.
All other 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 the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007, Texas Instruments Incorporated
1 Page www.ti.com
ELECTRICAL CHARACTERISTICS
At TA = +25°C and VS = +1.4V to +3.6V, unless otherwise noted.
PARAMETER
TEMPERATURE INPUT
Range
Accuracy (Temperature Error)
vs Supply
Resolution
DIGITAL INPUT/OUTPUT
Input Logic Levels:
VIH
VIL
Input Current
Output Logic Levels:
VOL SDA
VOL ALERT
Resolution
Conversion Time
Conversion Modes
Timeout Time
POWER SUPPLY
Operating Supply Range
Quiescent Current
Shutdown Current
TEMPERATURE RANGE
Specified Range
Operating Range
Thermal Resistance, SOT563
CONDITIONS
–25°C to +85°C
–40°C to +125°C
IIN 0 < VIN < 3.6V
V+ > 2V, IOL = 3mA
V+ < 2V, IOL = 3mA
V+ > 2V, IOL = 3mA
V+ < 2V, IOL = 3mA
CR1 = 0, CR0 = 0
CR1 = 0, CR0 = 1
CR1 = 1, CR0 = 0 (default)
CR1 = 1, CR0 = 1
IQ Serial Bus Inactive, CR1 = 1, CR0 = 0 (default)
Serial Bus Active, SCL Frequency = 400kHz
Serial Bus Active, SCL Frequency = 3.4MHz
ISD Serial Bus Inactive
Serial Bus Active, SCL Frequency = 400kHz
Serial Bus Active, SCL Frequency = 3.4MHz
θJA
TMP102
SBOS397 – AUGUST 2007
TMP102
MIN
TYP
MAX
–40 +125
0.5 2
13
0.2 0.5
0.0625
UNIT
°C
°C
°C
°C/V
°C
0.7 (V+)
–0.5
0
0
0
0
+1.4
–40
–55
12
26
0.25
1
4
8
30
7
15
85
0.5
10
80
142
3.6
0.3 (V+)
1
V
V
μA
0.4
0.2 (V+)
0.4
0.2 (V+)
35
40
V
V
V
V
Bit
ms
Conv/s
Conv/s
Conv/s
Conv/s
ms
+3.6
10
1
V
μA
μA
μA
μA
μA
μA
+125
+150
°C
°C
°C/W
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3
3Pages TMP102
SBOS397 – AUGUST 2007
TEMPERATURE REGISTER
The Temperature Register of the TMP102 is
configured as a 12-bit, read-only register
(Configuration Register EM bit = '0', see the
Extended Mode section), or as a 13-bit, read-only
register (Configuration Register EM bit = '1') 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. Note that byte 1 is the most
significant byte, followed by byte 2, the least
significant byte. The first 12 bits (13 bits in Extended
mode) are used to indicate temperature. The least
significant byte does not have to be read if that
information is not needed. The data format for
temperature is summarized in Table 5 and Table 6.
One LSB equals 0.0625°C. Negative numbers are
represented in binary two's complement format.
Following power-up or reset, the Temperature
Register will read 0°C until the first conversion is
www.ti.com
complete. Bit D0 of byte 2 indicates Normal mode
(EM bit = '0') or Extended mode (EM bit = '1') and
can be used to distinguish between the two
temperature register data formats. The unused bits in
the Temperature Register always read '0'.
Table 3. Byte 1 of Temperature Register(1)
D7 D6 D5 D4 D3 D2 D1 D0
T11 T10 T9 T8 T7 T6 T5 T4
(T12) (T11) (T10) (T9) (T8) (T7) (T6) (T5)
(1) Extended mode 13-bit configuration shown in parenthesis.
Table 4. Byte 2 of Temperature Register(1)
D7 D6 D5 D4 D3 D2 D1 D0
T3 T2 T1 T0
0
0
0
0
(T4) (T3) (T2) (T1) (T0) (0) (0) (1)
(1) Extended mode 13-bit configuration shown in parenthesis.
Table 5. 12-Bit Temperature Data Format(1)
TEMPERATURE (°C)
128
127.9375
100
80
75
50
25
0.25
0
–0.25
–25
–55
DIGITAL OUTPUT (BINARY)
0111 1111 1111
0111 1111 1111
0110 0100 0000
0101 0000 0000
0100 1011 0000
0011 0010 0000
0001 1001 0000
0000 0000 0100
0000 0000 0000
1111 1111 1100
1110 0111 0000
1100 1001 0000
HEX
7FF
7FF
640
500
4B0
320
190
004
000
FFC
E70
C90
(1) The resolution for the Temp ADC in Internal Temperature mode is 0.0625°C/count.
For positive temperatures (for example, +50°C):
Two's complement is not performed on positive numbers. Therefore, simply convert the number to binary
code with the 12-bit, left-justified format, and MSB = 0 to denote a positive sign.
Example: (+50°C)/(0.0625°C/count) = 800 = 320h = 0011 0010 0000
For negative temperatures (for example, –25°C):
Generate the Two's Complement of a negative number by complementing the absolute value binary number
and adding 1. Denote a negative number with MSB = 1.
Example: (|–25°C|)/(0.0625°C/count) = 400 = 190h = 0001 1001 0000
Two's complement format: 1110 0110 1111 + 1 = 1110 0111 0000
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6 Page | |||
ページ | 合計 : 19 ページ | ||
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PDF ダウンロード | [ TMP102 データシート.PDF ] |
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