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AD592AN

更新时间： 2024-02-16 11:33:36

品牌	Logo	应用领域
罗彻斯特 - ROCHESTER		传感器换能器
页数	文件大小	规格书
9页	1471K
描述
ANALOG TEMP SENSOR-CURRENT, 0.15Cel, RECTANGULAR, THROUGH HOLE MOUNT, TO-92, 3 PIN

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AD592AN 技术参数

Source Url Status Check Date：	2013-05-01 14:56:15.021	是否无铅：	含铅
是否Rohs认证：	不符合	生命周期：	Obsolete
包装说明：	TO-92, 3 PIN	针数：	3
Reach Compliance Code：	not_compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.18
最大精度（摄氏度）：	0.15 Cel	主体宽度：	4.06 mm
主体高度：	4.85 mm	主体长度或直径：	5.08 mm
外壳：	PLASTIC	JESD-609代码：	e0
线性度（Cel）：	0.35 Cel	安装特点：	THROUGH HOLE MOUNT
端子数量：	3	最高工作温度：	105 °C
最低工作温度：	-25 °C	输出电流标称：	298.2 µA
封装主体材料：	PLASTIC/EPOXY	封装等效代码：	SIP3,.1,50
封装形状/形式：	ROUND	电源：	5 V
传感器/换能器类型：	TEMPERATURE SENSOR,ANALOG,RESISTANCE BASED	子类别：	Other Sensors
最大供电电压：	30 V	最小供电电压：	4 V
表面贴装：	NO	技术：	BIPOLAR
端子面层：	Tin/Lead (Sn85Pb15)	端接类型：	SOLDER
Base Number Matches：	1

AD592AN 数据手册

AD592

THEORY OF OPERATION

resistor. Note that the maximum error at room temperature,

over the commercial IC temperature range, or an extended

range including the boiling point of water, can be directly read

from the specifications table. All three error limits are a combi-

nation of initial error, scale factor variation and nonlinearity de-

viation from the ideal 1 µA/K output. Figure 2 graphically

depicts the guaranteed limits of accuracy for an AD592CN.

The AD592 uses a fundamental property of silicon transistors

to realize its temperature proportional output. If two identical

transistors are operated at a constant ratio of collector current

densities, r, then the difference in base-emitter voltages will be

(kT/q)(ln r). Since both k, Boltzman’s constant and q, the

charge of an electron are constant, the resulting voltage is

directly Proportional To Absolute Temperature (PTAT). In the

AD592 this difference voltage is converted to a PTAT current

by low temperature coefficient thin film resistors. This PTAT

current is then used to force the total output current to be pro-

portional to degrees Kelvin. The result is a current source with

an output equal to a scale factor times the temperature (K) of

the sensor. A typical V-I plot of the circuit at +25°C and the

temperature extremes is shown in Figure 1.

+1.0

MAXIMUM ERROR

+0.5

OVER TEMPERATURE

TYPICAL ERROR

CALIBRATION

ERROR LIMIT

–0.5

MAXIMUM ERROR

OVER TEMPERATURE

–1.0

+105 C

378

–25

+25

+70

+105

+25 C

298

TEMPERATURE –

–25 C

248

Figure 2. Error Specifications (AD592CN)

UP TO

30V

The AD592 has a highly linear output in comparison to older

technology sensors (i.e., thermistors, RTDs and thermo-

couples), thus a nonlinearity error specification is separated

from the absolute accuracy given over temperature. As a maxi-

mum deviation from a best-fit straight line this specification rep-

resents the only error which cannot be trimmed out. Figure 3 is

a plot of typical AD592CN nonlinearity over the full rated tem-

perature range.

SUPPLY VOLTAGE – Volts

Figure 1. V-I Characteristics

Factory trimming of the scale factor to 1 µA/K is accomplished

at the wafer level by adjusting the AD592’s temperature reading

so it corresponds to the actual temperature. During laser trim-

ming the IC is at a temperature within a few degrees of 25°C

and is powered by a 5 V supply. The device is then packaged

and automatically temperature tested to specification.

+0.2

+0.1

TYPICAL NONLINEARITY

–0.1

–0.2

FACTORS AFFECTING AD592 SYSTEM PRECISION

The accuracy limits given on the Specifications page for the

AD592 make it easy to apply in a variety of diverse applications.

To calculate a total error budget in a given system it is impor-

tant to correctly interpret the accuracy specifications, non-

linearity errors, the response of the circuit to supply voltage

variations and the effect of the surrounding thermal environ-

ment. As with other electronic designs external component se-

lection will have a major effect on accuracy.

–25

+25

+70

+105

TEMPERATURE –

CALIBRATION ERROR, ABSOLUTE ACCURACY AND

NONLINEARITY SPECIFICATIONS

Figure 3. Nonlinearity Error (AD592CN)

Three primary limits of error are given for the AD592 such that

the correct grade for any given application can easily be chosen

for the overall level of accuracy required. They are the calibra-

tion accuracy at +25°C, and the error over temperature from

0°C to +70°C and –25°C to +105°C. These specifications cor-

respond to the actual error the user would see if the current out-

put of an AD592 were converted to a voltage with a precision

TRIMMING FOR HIGHER ACCURACY

Calibration error at 25°C can be removed with a single tempera-

ture trim. Figure 4 shows how to adjust the AD592’s scale fac-

tor in the basic voltage output circuit.

–4–

REV. A

1 2 3 456 7 8 9

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与AD592AN相关器件

型号	品牌	描述	获取价格	数据表
AD592ANZ	ADI	Low Cost, Precision IC Temperature Transducer	获取价格
AD592BN	ADI	Low Cost, Precision IC Temperature Transducer	获取价格
AD592BN	ROCHESTER	ANALOG TEMP SENSOR-CURRENT, 0.15Cel, RECTANGULAR, THROUGH HOLE MOUNT, TO-92, 3 PIN	获取价格
AD592BNZ	ADI	LOW COST, PRECISION IC TEMPERATURE TRANSDUCER	获取价格
AD592CN	ADI	Low Cost, Precision IC Temperature Transducer	获取价格
AD592CN	ROCHESTER	ANALOG TEMP SENSOR-CURRENT, 0.15Cel, RECTANGULAR, THROUGH HOLE MOUNT, TO-92, 3 PIN	获取价格

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