adder circuit - Electronic Circuits Projects Diagrams Free

ramu01 · 31st July 2008, 06:17 AM

ppl,

we all know the simple opamp adder circuit. this works fine with DC sources. this works well with AC sources with freq range of 0 to 1MHz too..

but can you suggest me an efficient high speed adder circuit to instantly add two signals of freq 250 MHz ??

Mikebits · 31st July 2008, 06:54 AM

Just google High speed op amps. There are op amps that operate at 250MHz.
Here is one example.
http://www.analog.com/en/amplifiers-...tml#quicklinks

Hero999 · 31st July 2008, 05:54 PM

Do you need any amplification?

Is some attenuation acceptable?

Is the impedance of the load constant?

You don't need an op-amp, just join the two sources together with a couply of resistors.

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31st July 2008, 06:17 AM	(permalink)
ramu01	adder circuit ppl, we all know the simple opamp adder circuit. this works fine with DC sources. this works well with AC sources with freq range of 0 to 1MHz too.. but can you suggest me an efficient high speed adder circuit to instantly add two signals of freq 250 MHz ??

31st July 2008, 06:54 AM	(permalink)
Mikebits	Just google High speed op amps. There are op amps that operate at 250MHz. Here is one example. http://www.analog.com/en/amplifiers-...tml#quicklinks __________________ Pay it forward.

31st July 2008, 05:54 PM	(permalink)
Hero999	Do you need any amplification? Is some attenuation acceptable? Is the impedance of the load constant? You don't need an op-amp, just join the two sources together with a couply of resistors. __________________ I also post at the following sites: http://www.stop-microsoft.org http://www.heated-debates.com Screen name: Aloone_Jonez And http://www.silicontronics.com, same screen name as here.