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參數(shù)資料
| 型號： | AD597AHZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 4/8頁 |
| 文件大?。?/td> | 772K |
| 描述： | IC THERMOCOUPLE COND TO-100-10 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 功能： | 熱電偶調(diào)節(jié)器 |
| 傳感器類型： | 外部 |
| 感應(yīng)溫度： | -200°C ~ 1250°C |
| 精確度： | ±4°C（最小值） |
| 拓?fù)洌?/td> | 冰點(diǎn)補(bǔ)償 |
| 輸出類型： | 電壓 |
| 輸出警報(bào)： | 是 |
| 輸出風(fēng)扇： | 無 |
| 電源電壓： | 5 V ~ 30 V |
| 工作溫度： | -55°C ~ 125°C |
| 安裝類型： | 通孔 |
| 封裝/外殼： | TO-100-10 金屬罐 |
| 供應(yīng)商設(shè)備封裝： | TO-100-10 |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 797 (CN2011-ZH PDF) |
AD596/AD597
REV. B
4
TEMPERATURE PROPORTIONAL OUTPUT MODE
The AD596/AD597 can be used to generate a temperature
proportional output of 10mV/癈 when operated with J and K
type thermocouples as shown in Figure 1. Thermocouples pro-
duce low level output voltages which are a function of both the
temperature being measured and the reference or cold junction
temperature. The AD596/AD597 compensates for the cold
junction temperature and amplifies the thermocouple signal to
produce a high level 10mV/癈 voltage output which is a func-
tion only of the temperature being measured. The temperature
stability of the part indicates the sensitivity of the output voltage
to changes in ambient or device temperatures. This is typically
0.02癈/癈 over the +25癈 to +100癈 recommended ambient
temperature range. The parts will operate over the extended
ambient temperature ranges from 55癈 to +125癈, but ther-
mocouple nonlinearity at the reference junction will degrade the
temperature stability over this extended range. Table I is a list of
ideal AD596/AD597 output voltages as a function of Celsius
temperature for type J and K ANSI standard thermocouples
with package and reference junction at 60癈. As is normally the
case, these outputs are subject to calibration and temperature
sensitivity errors. These tables are derived using the ideal trans-
fer functions:
AD596 output = (Type J voltage + 301.5礦) ?180.57
AD597 output = (Type K voltage) ?245.46
0.01F
1M
+15V
15V
100k
10k
100k
CONSTANTAN
(ALUMEL)
IRON
(CHROMEL)
OPTIONAL
OFFSET
ADJUST
0.01F
V
OUT
+5V TO +30V
0 TO 25V
SPAN OF
+5V TO +30V
AD596/
AD597*
*H PACKAGE PINOUT SHOWN
Figure 1. Temperature Proportional Output Connection
The offsets and gains of these devices have been laser trimmed
to closely approximate thermocouple characteristics over mea-
surement temperature ranges centered around 175癈 with the
AD596/AD597 at an ambient temperature between 25癈 and
100癈. This eliminates the need for additional gain or offset
adjustments to make the output voltage read:
V
OUT
= 10 mV/癈 ?(thermocouple temperature in 癈) (within
specified tolerances).
Excluding calibration errors, the above transfer function is accu-
rate to within 1癈 from +80癈 to +550癈 for the AD596 and
20癈 to +350癈 for the AD597. The different temperature
ranges are due to the differences in J and K type thermocouple
curves.
European DIN FE-CuNi thermocouple vary slightly from ANSI
type J thermocouples. Table I does not apply when these types
of thermocouples are used. The transfer functions given previ-
ously and a thermocouple table should be used instead.
Figure 1 also shows an optional trimming network which can be
used to change the devices offset voltage. Injecting or sinking
200 nA from Pin 3 will offset the output approximately 10 mV
(1癈).
The AD596/AD597 can operate from a single supply from 5V
to 36 V or from split supplies totalling 36 V or less as shown.
Since the output can only swing to within 2V of the positive
supply, the usable measurement temperature range will be re-
stricted when positive supplies less than 15 V for the AD597
and 10 V for the AD596 are used. If the AD596/AD597 is to be
used to indicate negative Celsius temperatures, then a negative
supply is required.
Common-mode voltages on the thermocouple inputs must
remain within the common-mode voltage range of the AD596/
AD597, with a return path provided for the bias currents. If the
thermocouple is not remotely grounded, then the dotted line
connection shown in Figure 1 must be made to one of the ther-
mocouple inputs. If there is no return path for the bias currents,
the input stage will saturate, causing erroneous output voltages.
In this configuration, the AD596/AD597 H package option has
circuitry which detects the presence of an open thermocouple. If
the thermocouple loop becomes open, one or both of the inputs
to the device will be deprived of bias current causing the output
to saturate. It is this saturation which is detected internally and
used to activate the alarm circuitry. The output of this feature
has a flexible format which can be used to source or sink up to
20 mA of current. The collector (+ALM) should not be allowed
to become more positive than (V
S
+ 36 V), however, it may be
permitted to be more positive than +V
S
. The emitter voltage
(ALM) should be constrained such that it does not become
more positive than 4V below +V
S
. If the alarm feature is not
used, this pin should be connected to Pins 4 or 5 as shown in
Figure 1. The alarm function is unavailable on the AR package
option.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD597AHZ | 制造商:Analog Devices 功能描述:Temperature Sensor IC |
| AD597AR | 制造商:Analog Devices 功能描述:Temp Sensor Analog 8-Pin SOIC N 制造商:Analog Devices 功能描述:Special Function IC Package/Case:8-SOIC |
| AD597ARZ | 功能描述:IC THERMOCOUPLE COND 8-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 功能:溫度開關(guān) 傳感器類型:內(nèi)部 感應(yīng)溫度:85°C 分界點(diǎn) 精確度:±6°C（最小值） 拓?fù)?ADC（三角積分型），比較器，寄存器庫 輸出類型:開路漏極 輸出警報(bào):是 輸出風(fēng)扇:是 電源電壓:2.7 V ~ 5.5 V 工作溫度:-55°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:帶卷 (TR) 其它名稱:ADT6501SRJZP085RL7-ND |
| AD597ARZ | 制造商:Analog Devices 功能描述:Temperature Sensor IC |
| AD598 | 制造商:AD 制造商全稱:Analog Devices 功能描述:LVDT Signal Conditioner |
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