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參數(shù)資料
| 型號： | AD590JFZ |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | ANALOG TEMP SENSOR-CURRENT, 298.2uA, RECTANGULAR, THROUGH HOLE MOUNT |
| 封裝： | CERAMIC, FP-2 |
| 文件頁數(shù)： | 2/16頁 |
| 文件大小： | 339K |
| 代理商： | AD590JFZ |
AD590
Rev. E | Page 10 of 16
GENERAL APPLICATIONS
Figure 16 demonstrates the use of a low cost digital panel meter
for the display of temperature on either the Kelvin, Celsius, or
Fahrenheit scales. For Kelvin temperature, Pin 9, Pin 4, and
Pin 2 are grounded; for Fahrenheit temperature, Pin 4 and Pin 2
are left open.
00
53
3-
0
14
6
5
9
4
2
OFFSET
CALIBRATION
5V
GAIN
SCALING
OFFSET
SCALING
3
8
AD2040
GND
AD590
+
–
Figure 16. Variable Scale Display
The above configuration yields a 3-digit display with 1°C or 1°F
resolution, in addition to an absolute accuracy of ±2.0°C over
the 55°C to +125°C temperature range, if a one-temperature
calibration is performed on an AD590K, AD590L, or AD590M.
Connecting several AD590 units in series, as shown in Figure 17,
allows the minimum of all the sensed temperatures to be
indicated. In contrast, using the sensors in parallel yields the
average of the sensed temperatures.
00
53
3-
0
15
AD590
+
–
AD590
+
–
AD590
+
–
+
VT MIN
10k
(0.1%)
–
+
–
AD590
+
–
+
–
+
VT AVG
333.3
(0.1%)
–
5V
15V
Figure 17. Series and Parallel Connection
The circuit in Figure 18 demonstrates one method by which
differential temperature measurements can be made. R1 and R2
can be used to trim the output of the op amp to indicate a
desired temperature difference. For example, the inherent offset
between the two devices can be trimmed in. If V+ and V are
radically different, then the difference in internal dissipation
causes a differential internal temperature rise. This effect can be
used to measure the ambient thermal resistance seen by the
sensors in applications such as fluid-level detectors or anemometry.
00
53
3-
01
6
AD590L
#2
+
–
AD590L
#1
+
–
R4
10k
R3
10k
R1
5M
R2
50k
V+
(T1 – T2) × (10mV/°C)
V–
AD707A
–
+
Figure 18. Differential Measurements
Figure 19 is an example of a cold junction compensation circuit
for a Type J thermocouple using the AD590 to monitor the
reference junction temperature. This circuit replaces an ice-bath
as the thermocouple reference for ambient temperatures
between 15°C and 35°C. The circuit is calibrated by adjusting RT
for a proper meter reading with the measuring junction at a
known reference temperature and the circuit near 25°C. Using
components with the TCs as specified in Figure 19, compensation
accuracy is within ±0.5°C for circuit temperatures between
15°C and 35°C. Other thermocouple types can be accommodated
with different resistor values. Note that the TCs of the voltage
reference and the resistors are the primary contributors to error.
00
53
3-
01
7
+
–
REFERENCE
JUNCTION
IRON
+
–
7.5V
AD590
AD580
CONSTANTAN
MEASURING
JUNCTION
RESISTORS ARE 1%, 50ppm/°C
METER
+
–
+
CU
52.3
8.66k
VOUT
RT
1k
Figure 19. Cold Junction Compensation Circuit for Type J Thermocouple
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD590JH | 功能描述:IC TEMP TRANSDUCER 2-TERM TO52-3 RoHS:是 類別:傳感器，轉(zhuǎn)換器 >> 溫度 系列:- 其它有關(guān)文件:DS1820 Digital Thermometer 標(biāo)準(zhǔn)包裝:500 系列:- 感應(yīng)溫度:-55°C ~ 125°C 輸出類型:開路漏極 電源電壓:3 V ~ 5.5 V 精確度:±0.5°C 封裝/外殼:TO-226-3、TO-92-3 標(biāo)準(zhǔn)主體 供應(yīng)商設(shè)備封裝:TO-92 包裝:散裝 |
| AD590JH | 制造商:Analog Devices 功能描述:SEMICONDUCTORSLINEAR |
| AD590JH/+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Temperature Transducer/Sensor |
| AD590JH/883 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| AD590JH/883B | 功能描述:板上安裝溫度傳感器 TEMPERATURE TRANSDUCER IC RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
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