Re: AD8074 - Analog Devices: SR#: E12K100052

Document created by analog-archivist Employee on Feb 23, 2016
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The AD8074  offer  a high-speed disable feature that allows the outputs to be
put into a high 
impedance state. However parameters of time  of disable/enable  aren't
specified. What value these  parameters have?
 

 

I got the following spec’s from the designer, who ran a simulation:

Enable to Disable:  50% point of control signal to 50% point of output change:
63 ns; 50% point of control signal to 99% point of output change: 170 ns
Disable to Enable:  50% point of control signal to 99% point of output change:
27 ns
Load conditions:  RL = 1K, CL = 20 pF

You might consider using Muxes with a faster switching time like the
AD8186/AD8187
http://www.analog.com/en/switchesmultiplexers/multiplexers-muxes/ad8186/products
/product.html

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