參數(shù)資料
型號: MX566AJN+
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: DAC
英文描述: PARALLEL, WORD INPUT LOADING, 0.25 us SETTLING TIME, 12-BIT DAC, PDIP24
封裝: PLASTIC, DIP-24
文件頁數(shù): 11/13頁
文件大?。?/td> 877K
代理商: MX566AJN+
MAX31855
Cold-Junction Compensated
Thermocouple-to-Digital Converter
11
Maxim Integrated
Applications Information
Noise Considerations
Because of the small signal levels involved, thermocou-
ple temperature measurement is susceptible to power-
supply coupled noise. The effects of power-supply noise
can be minimized by placing a 0.1
F
F ceramic bypass
capacitor close to the V
CC
pin of the device and to GND.
The input amplifier is a low-noise amplifier designed to
enable high-precision input sensing. Keep the thermo-
couple and connecting wires away from electrical noise
sources. It is strongly recommended to add a 10nF
ceramic surface-mount differential capacitor, placed
across the T+ and T- pins, in order to filter noise on the
thermocouple lines.
Thermal Considerations
Self-heating degrades the device’s temperature measure-
ment accuracy in some applications. The magnitude of the
temperature errors depends on the thermal conductivity
of the device package, the mounting technique, and the
effects of airflow. Use a large ground plane to improve the
device’s temperature measurement accuracy.
The thermocouple system’s accuracy can also be
improved by following these precautions:
Usethelargestwirepossiblethatdoesnotshuntheat
away from the measurement area.
Ifasmallwireisrequired,useitonlyintheregion
of the measurement, and use extension wire for the
region with no temperature gradient.
Avoidmechanicalstressandvibration,whichcould
strain the wires.
Whenusinglongthermocouplewires,useatwisted
pair extension wire.
Avoidsteeptemperaturegradients.
Trytousethethermocouplewirewellwithinitstem
-
perature rating.
Usethepropersheathingmaterialinhostileenviron
-
ments to protect the thermocouple wire.
Useextensionwireonlyatlowtemperaturesandonly
in regions of small gradients.
Keepaneventlogandacontinuousrecordofthermo
-
couple resistance.
相關(guān)PDF資料
PDF描述
MX7542JC/D PARALLEL, 4 BITS INPUT LOADING, 12-BIT DAC, UUC16
12508HR-04A00 1.25mm PITCH CONNECTOR
12508HR-05A00 1.25mm PITCH CONNECTOR
12508HR-06A00 1.25mm PITCH CONNECTOR
12508HR-07A00 1.25mm PITCH CONNECTOR
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