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Seeking Your Interest in Roadtesting a Digital Isolator Board

rscasny

Hi All.

imageI had a call with one of suppliers who is interested in roadtesting one of its digital isolator boards. We have not done much with digital isolators in the roadtest program. But given the need for circuit isolation and the safety they provide, I wanted the community to roadtest this product. In addition, another reason was the learning experience the roadtesters can provide community members on this product.

Here is some basic information on this board:

The evaluation kits are designed to evaluate the MAX22563−MAX22566, a family of reinforced, six-channel, galvanic digital isolators in a 20-pin SSOP package.

Two types of evaluation boards are available:

  • The MAX22565CAEVKIT# is fully assembled and tested, and comes populated with the MAX22565CAAP+ (Not used in this roadtest)
  • The MAX2256XAEVKIT# is a generic board that has U1 unpopulated, allowing to select a device from the MAX22563−MAX22566 family. This is the kit that will be used for this roadtest. The MAX2256XAEVKIT# comes with U1 unpopulated and supports the following digital isolators: MAX22563BAAP+, MAX22563CAAP+, MAX22564BAAP+, MAX22564CAAP+, MAX22565BAAP+, MAX22565CAAP+, MAX22566BAAP+, and MAX22566CAAP+.

imageEquipment needed for roadtesting:

You need some test equipment to roadtest the MAX2256XA EV kit:
• MAX22563−MAX22566 device if U1 is unpopulated on EV kit. (The roadtester and I will get together to order the desired device needed.)
• Two DC power supplies with output range of 1.71V to 5.5V
• Signal/function generator
• Oscilloscope
Note: The EV kit should be powered from two independent isolated power supplies with nominal output voltage in the range from 1.71V to 5.5V. To evaluate the electrical parameters of the device without any isolation between the two sides, a single power supply can also be used.

Element14 would not provide the test equipment.

Roadtesters would need to have the bench equipment for this roadtest. If you are an electronic design engineer, you likely have access to most of these equipment. This seems like a lot to ask, and it is. But I think this is a valuable roadtest to offer the community. The reviews the roadtesters write would not only be good learning experiences, but would also provide customers more than a datasheet to select a digital isolator when the need arises. 

Here's some documentation on the board:

Datasheet
Manufacturer's page

For Additional Information

Here's a couple of polls for which to vote:



Parents

  • It looks to me that this product needs roadtesters specialized in signal integrity, power integrity, noise coupling, and high voltage isolation testing.  This work is very specialized and requires quite some effort and lab equipment.  I am asking myself what is the goal that the manufacturer has setup for this roadtest?  I bet the goal is not unboxing the product and setting up a signal that goes through from the input to output.  Is the goal exercising the specs limits or finding any bug in the product?  Does anyone know? 

  • in reply to ciorga

    This is how the sponsor answered your questions:

    Agree with the comments in terms of signal integrity, power integrity, noise coupling and high voltage testing.

    These devices use ADI’s edge based differential architecture and capacitive isolation technology which enables lower power consumption per channel and the highest data rates supporting up to 200Mbps.

    The main features that should be called out are as follows:

    • High Channel Density ( 6 isolated channels available in multiple forward/reverse configurations.)
    • Edge based differential architecture ( Capacitive Isolation Technology) enabling:
      • Low Propagation Delay  (7ns )
      • Low Jitter  (11.1ps)
      • Low power consumption per channel (34mW per Channel at 1Mbps with VDD = 3.3V)
    • Highest Data Rate (200Mbps)
    • VISO = 3.75kVrms, VIOWM = 784 Vrms
    • CMTI = 50kV/us
Reply
  • in reply to ciorga

    This is how the sponsor answered your questions:

    Agree with the comments in terms of signal integrity, power integrity, noise coupling and high voltage testing.

    These devices use ADI’s edge based differential architecture and capacitive isolation technology which enables lower power consumption per channel and the highest data rates supporting up to 200Mbps.

    The main features that should be called out are as follows:

    • High Channel Density ( 6 isolated channels available in multiple forward/reverse configurations.)
    • Edge based differential architecture ( Capacitive Isolation Technology) enabling:
      • Low Propagation Delay  (7ns )
      • Low Jitter  (11.1ps)
      • Low power consumption per channel (34mW per Channel at 1Mbps with VDD = 3.3V)
    • Highest Data Rate (200Mbps)
    • VISO = 3.75kVrms, VIOWM = 784 Vrms
    • CMTI = 50kV/us
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