TE6650HN Datasheet, PDF (5/6 Pages) MORNSUN Science& Technology Ltd. – Two-terminal isolation

Isolated Transmitter
TExxxxHN Series
Typical application——Multi-channel voltage signal acquisition
Application circuit for typical multi-channel voltage signal acquisition is as below:
R1
TExxxxHN amplifier
Fig. 6 Multi-channel signal acquisition application circuit
Function
In the figure 6, Sin1~Sin4 are external input voltage signal,A0~A1 are strobe signal, and signal out is an external input signal of control
system to accept.
The optocoupler in the circuit implements the isolated transmission of strobe signals. Amplifier of TExxxxHN series implements the isolated
transmission of signals and isolated power supplement. The multi-channel strobe chips 4052 implements selective transmission of multiplex
signals.
Working principle
When the circuit works, the control system sends out the strobe signal A0~A1. Optical coupling isolation circuit transfers strobe signal
to multi-channel strobe chips 4052, and control the chip to correspond channel. External signal Sin1~Sin4 input to multi-channel strobe chips
4052. After a chip strobe, strobe signal transfers to the signal input of TExxxxHN transmitter. TExxxxHN transmitter output the isolated input
signal to control system, thus it implements the control system and the external signal isolation circuit. Input power of TExxxxHN transmitter
and the input Vcc of strobe signal transmission circuit are provided by control system. After strobe signal is isolated, transmission circuit power
and multi-channel strobe chips 4052 power supply ISOVCC are provided by isolation power output Pout+.
Notice
When the input signal is open, if the output signal value need near 0, please connect a resistor R1(R1＜100KΩ ) in parallel at the signal
input port of the model.
2. Recommended EMC circuit

Components
TVS1
C1
TVS2
TVS3
Recommended parameters
SMCJ30A
220uF/35V
SMBJ6.5A
SMBJ6.5A
Fig. 7
3. For more information please find the application notes on www.mornsun-power.com
2016.03.24-A/0
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