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參數資料
| 型號： | TMP04 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Serial Digital Output Thermometers |
| 中文描述： | 串行數字輸出溫度計 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 375K |
| 代理商： | TMP04 |
FUNCTIONAL BLOCK DIAGRAM
D
OUT
V+
GND
1
2
3
VPTAT
V
REF
DIGITAL
MODULATOR
TEMPERATURE
SENSOR
TMP03/04
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
Serial Digital Output Thermometers
TMP03/TMP04*
Analog Devices, Inc., 1995
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
FEATURES
Low Cost 3-Pin Package
Modulated Serial Digital Output
Proportional to Temperature
±
1.5
8
C Accuracy (typ) from –25
8
C to +100
8
C
Specified –40
8
C to +100
8
C, Operation to 150
8
C
Power Consumption 6.5 mW Max at 5 V
Flexible Open-Collector Output on TMP03
CMOS/TTL Compatible Output on TMP04
Low Voltage Operation (4.5 V to 7 V)
APPLICATIONS
Isolated Sensors
Environmental Control Systems
Computer Thermal Monitoring
Thermal Protection
Industrial Process Control
Power System Monitors
PACKAGE TYPES AVAILABLE
TO-92
D
OUT
V+
GND
1
2
3
TMP03/04
BOTTOM VIEW
(Not to Scale)
SO-8 and RU-8 (TSSOP)
1
2
3
4
8
7
6
5
TOP VIEW
(Not to Scale)
NC = NO CONNECT
TMP03/04
D
OUT
NC
NC
NC
NC
V+
GND
NC
GENERAL DESCRIPTION
The TMP03/TMP04 is a monolithic temperature detector that
generates a modulated serial digital output that varies in direct
proportion to the temperature of the device. An onboard sensor
generates a voltage precisely proportional to absolute temperature
which is compared to an internal voltage reference and input to a
precision digital modulator. The ratiometric encoding format of
the serial digital output is independent of the clock drift errors
common to most serial modulation techniques such as voltage-
to-frequency converters. Overall accuracy is
±
1.5
°
C (typical)
from –25
°
C to +100
°
C, with excellent transducer linearity. The
digital output of the TMP04 is CMOS/TTL compatible, and is
easily interfaced to the serial inputs of most popular micro-
processors. The open-collector output of the TMP03 is capable
of sinking 5 mA. The TMP03 is best suited for systems requiring
isolated circuits utilizing optocouplers or isolation transformers.
The TMP03 and TMP04 are specified for operation at supply
voltages from 4.5 V to 7 V. Operating from +5 V, supply current
(unloaded) is less than 1.3 mA.
The TMP03/TMP04 are rated for operation over the –40
°
C to
+100
°
C temperature range in the low cost TO-92, SO-8, and
TSSOP-8 surface mount packages. Operation extends to
+150
°
C with reduced accuracy.
(continued on page 4)
*
Patent pending.
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