Help finding the logic driver for SPDT Switch MASW-000936

[globalone]

Hello,

I am building a bi-directional amplifier and I am trying to integrate the SPDT Switch MASW-000936 into the circuit, but I couldn't find a Logic Driver for this switch.

Does anyone have an idea of something that would let me control Logics input -15v / +15v ?.

This is the link of the Switch
**broken link removed**

your recommendations are much appreciated


Ghassan

 

[biff44]

well, are u using high power? If so, u need the 28v and 100ma driver output. custom design...no chip to do that. if u need a fast switching time...things get very interesting. PM me if u need ideas.

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well, are u using high power? If so, u need the 28v and 100ma driver output. custom design...no chip to do that. if u need a fast switching time...things get very interesting. PM me if u need ideas.

 

[globalone]

Hello,

I have sent you a private message , but do you think that I can make the SPDT Switch MASW-000936 to work at switching times between 30 nano seconds to 65 nano seconds ?

 

[biff44]

not a prayer sport

 

[jiripolivka]

Hello,

I have sent you a private message , but do you think that I can make the SPDT Switch MASW-000936 to work at switching times between 30 nano seconds to 65 nano seconds ?

From the switch specifications I can read that the switching speed is 200 ns, so no external circuit can make it faster.

I made 7404 drivers for switches requiring +/- 5 V and -/+5 V to function. This switch needs +/- 15 V and up to 100 mA. I would use CMOS inverters that operate with 15 V, with +/- 15 V DC power supply, or fast operational amplifiers, plus power buffers at output. Like in audio amplifiers, a "totem-pole" stage with PNP and NPN transistors can deliver +/- 15 V at 100 mA. I would use RF power transistors to get he speed of 200 ns, but again, external parts do not make the switch faster.

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Maybe you can try to contact Mini-Circuits about the driver details.

 

[D.A.(Tony)Stewart]

100mA 28V switch in 200 ns requires a slew rate of ;

28v/200ns= 140 V/us

100mA/200ns= 500 mA/us

These can be expensive requirements.
https://www.ti.com/lit/ds/symlink/buf634.pdf