ADG1636 Suitability

I am looking for analog switches.

The first is SPDT two channel. It must be capable of switching between a 0 to 14v square wave signal and a -5 to +14v zero crossing square wave  signal. Current less then 10mA

The second is SPDT two channel. It must be capable of switching high and low. The high voltage is 14 volts. Low is 0 volts. Current 100 mA.or more.

I have found the ADG1636.  Is this suitable for both. If not, what do  recommend.

Ray.

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  • 0
    •  Analog Employees 
    on Nov 6, 2017 6:23 PM

    Hi Ray,

    By high and low  voltages of the RELUCTOR1 to 6 adjusted, do you mean you don't know when will they provide +18V high edge? OR you can control the nodes to always have +14V at high edge? I'm concerned with the high edge level because this will determine the voltage supply we'll be operating the switch with.

    I'm looking into the dual supply SPDT switches which is more suitable for your application:

    1. If the analog input goes as high as 18V, then I would recommend the ADG5436 which is a High Voltage Latch-Up Proof Dual SPDT Switches. It can operate at Vdd/Vss dual supplies = +/-20V and will cater the +18V high edge at RELUCTOR1 to 6.  However, on resistance is 10 ohms so you might want to consider this in your design. It also has a current carrying capability of 130mA to 229mA at 25C operation at +/-20V supply, depending on the package.
    2. The ADG1636 could be an option but is only operational up to +/-8V voltage supplies, thus will not cater the  +18V high edge.
    3. Another option that I would recommend is the ADG1436 which has a low on resistance of 1.5ohms great for precision. However, the ADG1436 is operational up to +/-16.5V sual supply only and will not cater the +18V high edge. It also has a current carrying capability of 260mA to 400mA at 25C operation at +/-15V supply, depending on the package.

    Let me know your thoughts.

    Best Regards,

    May 

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  • 0
    •  Analog Employees 
    on Nov 6, 2017 6:23 PM

    Hi Ray,

    By high and low  voltages of the RELUCTOR1 to 6 adjusted, do you mean you don't know when will they provide +18V high edge? OR you can control the nodes to always have +14V at high edge? I'm concerned with the high edge level because this will determine the voltage supply we'll be operating the switch with.

    I'm looking into the dual supply SPDT switches which is more suitable for your application:

    1. If the analog input goes as high as 18V, then I would recommend the ADG5436 which is a High Voltage Latch-Up Proof Dual SPDT Switches. It can operate at Vdd/Vss dual supplies = +/-20V and will cater the +18V high edge at RELUCTOR1 to 6.  However, on resistance is 10 ohms so you might want to consider this in your design. It also has a current carrying capability of 130mA to 229mA at 25C operation at +/-20V supply, depending on the package.
    2. The ADG1636 could be an option but is only operational up to +/-8V voltage supplies, thus will not cater the  +18V high edge.
    3. Another option that I would recommend is the ADG1436 which has a low on resistance of 1.5ohms great for precision. However, the ADG1436 is operational up to +/-16.5V sual supply only and will not cater the +18V high edge. It also has a current carrying capability of 260mA to 400mA at 25C operation at +/-15V supply, depending on the package.

    Let me know your thoughts.

    Best Regards,

    May 

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