TE6650HN Datasheet, PDF (3/6 Pages) MORNSUN Science& Technology Ltd. – Two-terminal isolation

Isolated Transmitter
TExxxxHN Series
2) Wiring diagram for product application
Power input ⁺
-
28 27 26
ISO Power output
17 16 15 ^-
-
Signal output
1 23
13 14
Signal input
Fig. 2
Note：15、16 pin of the product without ISO power output can not have any electrical connection to a external circuit.
3) Typical application of the product without ISO power output
Typical application 1—common application
Application circuit for common application is as below:
Fig. 3 application circuit for common application
Function
In the figure 3, signal source outputs a common voltage signal, Amplifier of TExxxxHN series achieve signal transmission and 4000VAC
voltage isolation function, then output the isolated input signal to control system.
Typical application 2—high voltage signal acquisition
Application circuit for high voltage signal acquisition is as below:
Fig. 4 application circuit for high voltage signal acquisition
Function
In the figure 4, Signal in is detected high valtage signals, divided by resistance R1 and R2,then be detected by TExxxxHN. Amplifier of
TExxxxHN series achieve signal transmission and isolation function,then output the isolated input signal to ADC of the control system.The
signal input and signal output of TExxxxHN are isolated , insure the control system against common mode interference from detection port.
Working principle
Supposing detected high valtage signal is 0~1000V. divided by resistance R1 and R2,then input 0~5V to TExxxxHN. We can choose the
amplifier has 0~5V input and 0~5V output. R3 and C3 compose the first-order filter circuit.
Parameter
The Input impedance of TExxxxHN ＞ 10M Ω ,typical value of R2 is 10KΩ. Value of R1 selected based on the input high voltage
signals,also needs to consider power dissipation and maximum operating voltage of resistance R1.When have no suitable resistance, R1
can form by several resistance in series. R3 and C3 compose the first-order filter circuit. Value of R3 and C3 selected based on bandwidth,
typical value of R3 is 2kΩ, C3 is10nF.
2016.03.24-A/0
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