MCU1201 ADUM-1201 ADUM1201ARZ Magnetic Isolator Replaces OptocouplerItem NO.: MCU1201

ADUM1201 Magnetic Isolator

Product Description:

The iCoupler digital isolator based on ADI patents adopts planar magnetic field patented isolation technology. ICoupler technology is a patented isolation technology based on chip size transformers, rather than a combination of LEDs and photodiodes used in optocouplers. Due to the cancellation of the photoelectric conversion process in optocouplers and the use of iCoupler transformer patented technology to integrate transformer driver and receiver circuits, iCoupler technology achieves performance advantages that cannot be compared to optoisolators. Due to the use of chip level manufacturing processes to directly manufacture iCouple transformers on chips, iCoupler channels are more effective in integrating channels and easily implementing other semiconductor functions than optocouplers.

Due to the absence of photoelectric conversion links that affect efficiency in optocouplers, iCoupler digital isolators do not require external circuits to drive LEDs, and their power consumption is only 1/10 to 1/50 of that of optocouplers. This new electromagnetic based isolation method is far superior to optocouplers in terms of resistance to high temperature effects. The performance and reliability of iCoupler digital isolators do not decrease under high temperature environments of 125 ℃. Therefore, low-cost and small-sized SOIC packaging can be used, which not only reduces costs but also reduces the size of the chip. In addition, the isolation channel of iCoupler digital isolators has higher data transmission rate, timing accuracy, and transient common mode suppression ability than optocouplers. Its rated isolation voltage is twice that of a high isolation optocoupler, and its data transmission rate and timing accuracy are 10 times higher. In addition, unlike optocouplers, multi-channel iCoupler digital isolators can provide forward and reverse communication channels within the same chip, making the signal transmission direction more flexible and simplifying the hardware connection lines between chips.

Due to its iCoupler technology, ADUM1201 has many advantages over optoelectronic isolators:

The speed can reach 125Mbps at a higher rate.

The power consumption is lower than 1/10 of traditional optoelectronic isolators at the same data transmission rate, and the small working current is 0.8mA.

Higher timing accuracy, transient common mode suppression, and better matching between channels compared to traditional optoelectronic isolators.

Smaller in size and higher in integration, the area of printed circuit boards (PCBs) is 40% that of traditional optoelectronic isolators.

Unlike traditional optoelectronic couplers, multi-channel iCoupler digital isolators can provide forward and reverse communication channels within the same chip for more flexible applications.

The two isolated ends of ADUM1201 have their own power supply and reference ground, and the power supply voltage range is between 2.7V and 5.5V, which can achieve low voltage power supply and further reduce system power consumption. 0.01 needs to be connected between the power supply and reference ground μ F to 0.1 μ F capacitor to filter out high-frequency interference, the distance between the capacitor and the power supply should be within 20mm, which can achieve better filtering effect. Due to the high matching of the two isolation channels, the crosstalk between the channels is very small, and the reverse design of the two input and output channels is adopted, which is very suitable for the bidirectional transmission and reception characteristics of the RS232 bus, greatly simplifying the hardware connection between the isolators and the isolated ends. It should be noted that GND1 and GND2 are two different reference points, otherwise the isolation effect will not be achieved.

Additionally, it should be noted that during normal operation of ADUM1201, both ends of the power supply need to be powered on simultaneously to ensure that both channels of ADUM1201 can work properly. If one of them is not powered on, it can cause the entire chip to malfunction