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부품번호 TMP102 기능
기능 Low Power Digital Temperature Sensor
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TMP102 데이터시트, 핀배열, 회로
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




TMP102 pdf, 반도체, 판매, 대치품
TMP102
SBOS397 – AUGUST 2007
TYPICAL CHARACTERISTICS
At TA = +25°C and V+ = 3.3V, unless otherwise noted.
www.ti.com
QUIESCENT CURRENT vs TEMPERATURE
(4 Conversions per Second)
20
18
16
14
12
10
3.6V Supply
8
6
4 1.4V Supply
2
0
-60 -40 -20 0 20 40 60 80 100 120 140 160
Temperature (°C)
Figure 1.
SHUTDOWN CURRENT vs TEMPERATURE
10
9
8
7
6
5
3.6V Supply
4
3
1.4V Supply
2
1
0
-60 -40 -20 0 20 40 60 80 100 120 140 160
Temperature (°C)
Figure 2.
CONVERSION TIME vs TEMPERATURE
40
38
36
34
32
1.4V Supply
30
28
26
3.6V Supply
24
22
20
-60 -40 -20 0 20 40 60 80 100 120 140 160
Temperature (°C)
Figure 3.
QUIESCENT CURRENT vs BUS FREQUENCY
(Temperature at 3.3V Supply)
100
90
80
70
60
50
40
30 +25°C -55°C
20
+125°C
10
0
1k 10k 100k 1M 10M
Bus Frequency (Hz)
Figure 4.
TEMPERATURE ERROR vs TEMPERATURE
2.0
1.5
1.0
0.5
0
-0.5
-1.0
-1.5
-2.0
-60 -40 -20 0
20 40 60 80 100 120 140 160
Temperature (°C)
Figure 5.
TEMPERATURE ERROR AT +25°C
Temperature Error (°C)
Figure 6.
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TMP102 전자부품, 판매, 대치품
TMP102
www.ti.com
TEMPERATURE (°C)
150
128
127.9375
100
80
75
50
25
0.25
0
–0.25
–25
–55
Table 6. 13-Bit Temperature Data Format
DIGITAL OUTPUT (BINARY)
0 1001 0110 0000
0 1000 0000 0000
0 0111 1111 1111
0 0110 0100 0000
0 0101 0000 0000
0 0100 1011 0000
0 0011 0010 0000
0 0001 1001 0000
0 0000 0000 0100
0 0000 0000 0000
1 1111 1111 1100
1 1110 0111 0000
1 1100 1001 0000
SBOS397 – AUGUST 2007
HEX
0960
0800
07FF
0640
0500
04B0
0320
0190
0004
0000
1FFC
1E70
1C90
CONFIGURATION REGISTER
The Configuration Register is a 16-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 and
power-up/reset value of the Configuration Register is
shown in Table 7. For compatability, the first byte
corresponds to the Configuration Register in the
TMP75 and TMP275. All registers are updated byte
by byte.
Table 7. Configuration and Power-Up/Reset
Format
BYTE D7 D6 D5 D4 D3 D2 D1 D0
OS R1 R0 F1 F0 POL TM SD
1
01100000
CR1 CR0 AL EM 0 0 0 0
2
10100000
EXTENDED MODE (EM)
The Extended mode bit configures the device for
Normal mode operation (EM = 0) or Extended mode
operation (EM = 1). In Normal mode, the
Temperature Register and high- and low-limit
registers use a 12-bit data format. Normal mode is
used to make the TMP102 compatible with the
TMP75.
Extended mode (EM = 1) allows measurement of
temperatures above +128°C by configuring the
Temperature Register, and high- and low-limit
registers, for 13-bit data format.
ALERT (AL Bit)
The AL bit is a read-only function. Reading the AL bit
will provide information about the comparator mode
status. The state of the POL bit inverts the polarity of
data returned from the AL bit. For POL = 0, the AL
bit will read as '1' until the temperature equals or
exceeds THIGH for the programmed number of
consecutive faults, causing the AL bit to read as '0'.
The AL bit will continue to read as '0' until the
temperature falls below TLOW for the programmed
number of consecutive faults, when it will again read
as '1'. The status of the TM bit does not affect the
status of the AL bit.
CONVERSION RATE
The conversion rate bits, CR1 and CR0, configure
the TMP102 for conversion rates of 8Hz, 4Hz, 1Hz,
or 0.25Hz. The default rate is 4Hz. The TMP102 has
a typical conversion time of 26ms. To achieve
different conversion rates, the TMP102 makes a
conversion and after that powers down and waits for
the appropriate delay set by CR1 and CR0. Table 8
shows the settings for CR1 and CR0.
Table 8. Conversion Rate Settings
CR1
0
0
1
1
CR0
0
1
0
1
CONVERSION RATE
0.25Hz
1Hz
4Hz (default)
8Hz
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