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TMP17 반도체 회로 부품 판매점

Low Cost/ Current Output Temperature Transducer



Analog Devices 로고
Analog Devices
TMP17 데이터시트, 핀배열, 회로
a
FEATURES
Operating Temperature Range: ؊40؇C to ؉105؇C
Single Supply Operation: ؉4 V to ؉30 V
Excellent Repeatability and Stability
High Level Output: 1 A/K
Monolithic IC: Temperature In/Current Out
Minimal Self-Heating Errors
APPLICATIONS
Appliance Temperature Sensor
Automotive Temperature Measurement and Control
HVAC System Monitoring
Industrial Temperature Control
Thermocouple Cold Junction Compensation
GENERAL DESCRIPTION
The TMP17 is a monolithic integrated circuit temperature
transducer that provides an output current proportional to
absolute temperature. For a wide range of supply voltages the
transducer acts as a high impedance temperature dependent
current source of 1 µA/K. Improved design and laser wafer
trimming of the IC’s thin-film resistors allows the TMP17 to
achieve absolute accuracy levels and nonlinearity errors
previously unattainable at a comparable price.
The TMP17 can be employed in applications between Ϫ40°C
to ϩ105°C where conventional temperature sensors (i.e.,
thermistor, RTD, thermocouple, diode) are currently being
used. Expensive linearization circuitry, precision voltage
references, bridge components, resistance measuring circuitry
and cold junction compensation are not required with the
TMP17.
378
343
1µA/K
273
248
45 25 0
70
TEMPERATURE – C
105 125
Figure 1. Transfer Characteristic
Low Cost, Current Output
Temperature Transducer
TMP17*
FUNCTIONAL DIAGRAM
NC NC
V NC
V NC
NC NC
PACKAGE DIAGRAM
SO-8
NC 1
8 NC
V2
7 NC
TOP VIEW
V 3 (Not to Scale) 6 NC
NC 4
5 NC
NC = NO CONNECT
The TMP17 is available in a low cost SO-8 surface-mount
package.
PRODUCT HIGHLIGHTS
1. A wide operating temperature range (Ϫ40°C to ϩ105°C)
and highly linear output make the TMP17 an ideal substi-
tute for older, more limited sensor technologies (i.e., therm-
istors, RTDs, diodes, thermocouples).
2. The TMP17 is electrically rugged; supply irregularities and
variations or reverse voltages up to 20 V will not damage
the device.
3. Because the TMP17 is a temperature dependent current
source, it is immune to voltage noise pickup and IR drops in
the signal leads when used remotely.
4. The high output impedance of the TMP17 provides greater
than 0.5°C/V rejection of supply voltage drift and ripple.
5. Laser wafer trimming and temperature testing insures that
TMP17 units are easily interchangeable.
6. Initial system accuracy will not degrade significantly over
time. The TMP17 has proven long term performance and
repeatability advantages inherent in integrated circuit design
and construction.
*Protected by U.S. Patent No. 4,123,698
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.
© Analog Devices, Inc., 1996
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703


TMP17 데이터시트, 핀배열, 회로
TMP17F/G–SPECIFICATIONS (VS = ؉5.0 V, ؊40؇C TA 105؇C, unless otherwise noted)
Parameter
Symbol
Conditions
Min Typ Max
Units
ACCURACY
TMP17F
TMP17G
TMP17F
TMP17G
Power Supply Rejection Ratio
ϩ4 V < VS < ϩ5 V
ϩ5 V < VS < ϩ15 V
ϩ15 V < VS < ϩ30 V
Nonlinearity
PSRR
PSRR
PSRR
TA = ϩ25°C1
TA = ϩ25°C1
Over Rated Temperature
Over Rated Temperature
Over Rated Temperature2
Ϯ2.5
Ϯ3.5
Ϯ3.5
Ϯ4.5
0.5
0.3
0.3
0.5
°C
°C
°C
°C
°C/V
°C/V
°C/V
°C
OUTPUT
Nominal Current Output
Scale Factor
Repeatability
Long Term Stability
TA = ϩ25°C (298.2K)
Over Rated Temperature
Note 3
TA = ϩ150°C for 500 Hrs4
298.2
1
0.2
0.2
POWER SUPPLY
Supply Range
ϩVS
4 30
NOTES
1An external calibration trim can be used to zero the error @ ϩ25°C.
2Defined as the maximum deviation from a mathematically best fit line.
3Maximum deviation between ϩ25°C readings after a temperature cycle between Ϫ40°C and ϩ105°C. Errors of this type are noncumulative.
4Operation at ϩ150°C. Errors of this type are noncumulative.
Specifications subject to change without notice.
µA
µA/°C
°C
°C/month
V
ABSOLUTE MAXIMUM RATINGS*
Maximum Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . ϩ30 V
Operating Temperature Range . . . . . . . . . . Ϫ40°C to ϩ105°C
Maximum Forward Voltage (ϩ to Ϫ) . . . . . . . . . . . . . . ϩ44 V
Maximum Reverse Voltage (Ϫ to ϩ) . . . . . . . . . . . . . . . ϩ20 V
Dice Junction Temperature . . . . . . . . . . . . . . . . . . . . . ϩ175°C
Storage Temperature Range . . . . . . . . . . . . Ϫ65°C to ϩ160°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . ϩ300°C
NOTES
*Stresses above those listed under “Absolute Maximum Ratings” may cause
permanent damage to the device. This is a stress rating only and functional
operation at or above this specification is not implied. Exposure to the above
maximum rating conditions for extended periods may affect device reliability.
V+
V–
METALIZATION DIAGRAM
62MILS
37MILS
TEMPERATURE SCALE CONVERSION EQUATIONS
؇C
=
5
9
(؇F
؊
32)
؇F
=
9
5
؇C
؉ 32
K = ؇C ؉ 273.15
ORDERING GUIDE
Model
Max Cal Error @ +25؇C Max Error –40؇C to +105؇C Nonlinearity –40؇C to +105؇C Package Option
TMP17FS 2.5°C
TMP17GS 3.5°C
3.5°C
4.5°C
0.5°C
0.5°C
SO-8
SO-8
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the TMP17 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
–2– REV. 0




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