Analog circuit design steps

[omartaoufik]

Hello everybody
i am new to analog design and i was assigned to do an analog design to sensor interfaces(LVDT , 4-20mA , differential 485) . the problem i am facin g right know is that i don't know exactly from where to start, (for example i don't know if i need a filter or not, and if i need one then what type of filter should i design) it's like i don't know the right steps or procedure to design an analog cicruit,can you help me with ideas even a book or an article can help

 

[Harald Kapp]

i don't know exactly from where to start

Usually by clearly defining the requirements, for example:

• What are your inputs?
• What are your expected outputs?
• What operations are to be performed?
• What are possible boundary conditions (like power consumption, data rate, size, monetary budget etc. etc.)

Harald

 

[omartaoufik]

the problems i don't have a clear idea about the operations to be preformed,should i look to similar circuits

 

[Harald Kapp]

should i look to similar circuits

Similar to what?

 

[Laplace]

i don't have a clear idea about the operations to be preformed

You need to know what is outside the box before you can design what goes inside the box. Texas Instruments has an Application Report (SPRA946 - August 2003) that may inspire some ideas...