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기능 1.5C Accurate Programmable Digital Temperature Sensors with SPI Interface
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TMP124AIDR 데이터시트, 핀배열, 회로
TMP122
TMP124
SBOS272B – JUNE 2003 – REVISED DECEMBER 2003
1.5°C Accurate Programmable
Digital Temperature Sensors
with SPI™ Interface
FEATURES
q DIGITAL OUTPUT: SPI-Compatible Interface
q PROGRAMMABLE RESOLUTION:
9- to 12-Bits + Sign
q ACCURACY:
±1.5°C from –25°C to +85°C (max)
±2.0°C from –40°C to +125°C (max)
q LOW QUIESCENT CURRENT: 50µA
q WIDE SUPPLY RANGE: 2.7V to 5.5V
q TINY SOT23-6 AND SO-8 PACKAGES
q OPERATION TO 150°C
q PROGRAMMABLE HIGH/LOW SETPOINTS
APPLICATIONS
q POWER-SUPPLY TEMPERATURE MONITORING
q COMPUTER PERIPHERAL THERMAL PROTECTION
q NOTEBOOK COMPUTERS
q CELL PHONES
q BATTERY MANAGEMENT
q OFFICE MACHINES
q THERMOSTAT CONTROLS
q ENVIRONMENTAL MONITORING and HVAC
q ELECTROMECHANICAL DEVICE TEMPERATURE
Temperature
ALERT
1
Diode
Temp.
Sensor
Control
Logic
6 SO/I
GND
2 ∆Σ
A/D
Converter
Serial
Interface
5
CS
V+ 3
OSC
Config
and Temp
Register
4
SCK
DESCRIPTION
The TMP122 and TMP124 are SPI-compatible temperature
sensors available in SOT23-6 and SO-8 packages. Requir-
ing only a pull-up resistor for complete function, the TMP122
and TMP124 temperature sensors are capable of measuring
temperatures within 2°C of accuracy over a temperature
range of –40°C to +125°C, with operation up to 150°C.
Programmable resolution, programmable set points and shut
down function provide versatility for any application. Low
supply current and a supply range from 2.7V to 5.5V make
the TMP122 and TMP124 excellent candidates for low-
power applications.
The TMP122 and TMP124 are ideal for extended thermal
measurement in a variety of communication, computer, con-
sumer, environmental, industrial, and instrumentation appli-
cations.
Temperature
SO/I
1
Diode
Temp.
Sensor
SCK
2 ∆Σ
A/D
Converter
NC 3
GND
4
OSC
Control
Logic
8 V+
Serial
Interface
7
CS
Config
and Temp
Register
6
5
NC
ALERT
TMP122
TMP124
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.
SPI is a registered trademark of Motorola. 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 Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
www.ti.com
Copyright © 2003, Texas Instruments Incorporated




TMP124AIDR pdf, 반도체, 판매, 대치품
TYPICAL CHARACTERISTICS
At TA = +25°C, and V+ = 5.0V, unless otherwise noted.
QUIESCENT CURRENT vs TEMPERATURE
70
60
V+ = 5V
50
V+ = 2.7V
40
Serial Bus Inactive
30
60 40 20 0 20 40 60 80 100 120 140
Temperature (°C)
CONVERSION TIME vs TEMPERATURE
400
300
V+ = 5V
200
V+ = 2.7V
100
60 40 20
12-bit resolution.
0 20 40 60 80 100 120 140
Temperature (°C)
SHUTDOWN CURRENT vs TEMPERATURE
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0.1
60 40 20 0 20 40 60 80 100 120 140
Temperature (°C)
TEMPERATURE ACCURACY vs TEMPERATURE
2.0
1.5
1.0
0.5
0.0
0.5
1.0
1.5
3 typical units 12-bit resolution.
2.0
60 40 20 0 20 40 60
80 100 120 140 160
Temperature (°C)
4 TMP122, TMP124
www.ti.com
SBOS272B

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TMP124AIDR 전자부품, 판매, 대치품
READ ADDRESS REGISTER
Figure 7 shows the internal register structure of the
TMP122/TMP124. Table III describes the addresses of the
registers available. The READ address register uses the two
bits to identify which of the data registers should respond to
a read command. Following a complete 16-bit read, the
READ address register is reset to the default power-up state
of P1/P0 equal 0/0.
READ Address
Register
Temperature
Register
Configuration
Register
TLOW
Register
THIGH
Register
I/O
Control
Interface
CS
SCK
SO/I
FIGURE 7. Internal Register Structure of the TMP122 and
TMP124.
P1 P0 REGISTER
0 0 Temperature Register (READ Only)
0 1 Configuration Register (READ/WRITE)
1 0 TLOW Register (READ/WRITE)
1 1 THIGH Register (READ/WRITE)
TABLE III. Pointer Addresses of the TMP122 and TMP124
Registers.
TEMPERATURE REGISTER
The Temperature Register of the TMP122/TMP124 is a 16-
bit, signed read-only register that stores the output of the
most recent conversion. The TMP122/TMP124 are speci-
fied for the temperature range of 40°C to +125°C with
operation from 55°C to +150°C. Up to 16 bits can be read
to obtain data and are described in Table IV. The first 13 bits
are used to indicate temperature where bit D2 is 1, and D1,
D0 are in a high impedance state. Data format for tempera-
ture is summarized in Table V. Following power-up or reset,
the Temperature Register will read 0°C until the first conver-
sion is complete.
D15 D14 D13 D12 D11 D10 D9
T12 T11 T10
T9
T8
T7 T6
D7 D6 D5 D4 D3 D2 D1
T4 T3 T2 T1 T0 1 Z
TABLE IV. Temperature Register.
D8
T5
D0
Z
TEMPERATURE
(°C)
DIGITAL OUTPUT(1)
(BINARY)
HEX
150
125
25
0.0625
0
0.0625
25
55
0100 1011 0000 0111
0011 1110 1000 0111
0000 1100 1000 0111
0000 0000 0000 1111
0000 0000 0000 0111
1111 1111 1111 1111
1111 0011 1000 0111
1110 0100 1000 0111
4B07
3E87
0C87
000F
0007
FFFF
F387
E487
NOTE: (1) The last 2 bits are high impedance and are shown as 11 in the table.
TABLE V. Temperature Data Format.
The user can obtain 9, 10, 11, or 12 bits of resolution by
addressing the Configuration Register and setting the reso-
lution 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 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 of the Configuration Register for the
TMP122/TMP124 is shown in Table VI, followed by a break-
down of the register bits. The power-up/reset value of the
Configuration Register bits R1/R0 equal 1/1, all other bits
equal zero.
D15 D14 D13 D12 D11 D10 D9
0 0 0 0 D1 D0 R1
D8
R0
D7 D6 D5 D4 D3 D2 D1 D0
F1 F0 POL TM1 TM0 0 1 0
TABLE VI. Configuration Register.
SHUTDOWN MODE (SD)
The Shutdown Mode of the TMP122/TMP124 can be used to
shut down all device circuitry except the serial interface.
Shutdown mode occurs when the last 8 bits of the WRITE
command are equal to 1, and will occur once the current
conversion is completed, reducing current consumption to
less than 1µA. To take the part out of shutdown, send any
command or pattern after the 16-bit read with the last 8 bits
not equal to one. Power on default is in active mode.
TMP122, TMP124
SBOS272B
www.ti.com
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관련 데이터시트

부품번호상세설명 및 기능제조사
TMP124AID

1.5C Accurate Programmable Digital Temperature Sensors with SPI Interface

Burr-Brown Corporation
Burr-Brown Corporation
TMP124AIDR

1.5C Accurate Programmable Digital Temperature Sensors with SPI Interface

Burr-Brown Corporation
Burr-Brown Corporation

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