phase sensitive detection

[diane80]

hi,
pls, i need help for a experiment in optical biosensor i 'd like to set up
a system that can carry out phase sensitive detection. i learnt that one
can use the AD630 from Analog. how can design a circuit for that.
thx

 

[John Popelish]

hi,
pls, i need help for a experiment in optical biosensor i 'd like to set up
a system that can carry out phase sensitive detection. i learnt that one
can use the AD630 from Analog. how can design a circuit for that.
thx

Have you reviewed the application notes on the data sheet?
http://www.analog.com/UploadedFiles/Data_Sheets/106127811AD630_e.pdf

If you have the actual modulation frequency source available, the most
you should have to do is add a phase shift trim to get the maximum
sensitivity out of the amplifier.

 

[Jamie]

hi,
pls, i need help for a experiment in optical biosensor i 'd like to set up
a system that can carry out phase sensitive detection. i learnt that one
can use the AD630 from Analog. how can design a circuit for that.
thx

http://eecs.evansville.edu/pdf/lm1496.pdf
you may want to look at, its cheaper and and
has examples of use.

 

[diane80]

thanks john, i ve read the data sheets. i think that is quite easy.

 

[diane80]

thanks jamie. this ic is quite new for me. i ll check it. do u know other
sources of applications?

 

[Rene Tschaggelar]

http://eecs.evansville.edu/pdf/lm1496.pdf
you may want to look at, its cheaper and and
has examples of use.

At least at digikey, this LM1496 is considered obsolete.
You wouldn't have a commercial source ?

Rene

 

[Jim Thompson]

At least at digikey, this LM1496 is considered obsolete.
You wouldn't have a commercial source ?

Rene

ON Semi shows it on their site (MC1496).

...Jim Thompson

 

[Rene Tschaggelar]

ON Semi shows it on their site (MC1496).

Thanks Jim,
it is 0.74$ @1 at digikey. It would be interesting how it
compares to the AD630. I'll have a look at it.

Rene

 

[Jim Thompson]

Thanks Jim,
it is 0.74$ @1 at digikey. It would be interesting how it
compares to the AD630. I'll have a look at it.

Rene

The xx1496 is meant primarily for mixer use, the AD630 is a precision
demodulator... it's going to depend on what kind of signal processing
you're doing.

...Jim Thompson

 

[John Woodgate]

I read in sci.electronics.design that Rene Tschaggelar <[email protected]>

Thanks Jim,
it is 0.74$ @1 at digikey. It would be interesting how it
compares to the AD630. I'll have a look at it.

Be careful what you do at the inputs. It can oscillate for no apparent
reason if you deviate too far from the data sheet recommendations.