Is ADA4610 fitted for audio Sample&Hold ?
Inverting S&H, Supply =/- 12V, Uin max 6Vpp, BW= 2--22kHz.
Holdcapacitors between 100---300pF, load12kOhm, resissive.
Apologies for the late response.
It looks like the ADA4610 would be a good fit for this application. It has high output current capability, relatively high slew rate and fast settling time, and low input bias current so the amplifier will have minimal effect on the charge of the hold cap. It also looks like it should be able to handle the value of hold capacitances you indicated. May I ask what configuration you plan to use for the sample and hold circuit? Could you provide a schematic?
Hi Kris, i will provide you the scematics next week; i am out of office right now. But thank you for your reply IP till now.
Met vriendelijke groet,
Hans Splinter, TS Solar Nederland.
( Vanaf mijn mobiele telefoon ).
Op 23 nov. 2017 om 05:05 heeft krisf <email@example.com<mailto:firstname.lastname@example.org>> het volgende geschreven:
Re: ADA4610 fitted for Sample&Hold ? Bandwith 2-22kHz, signals up to 6Vpp, Supply 2x 12V, Hold cap 120pF
reply from krisf<https://ez.analog.com/people/krisf?et=watches.email.thread> in Operational Amplifiers - View the full discussion<https://ez.analog.com/message/326637-re-ada4610-fitted-for-samplehold-bandwith-2-22khz-signals-up-to-6vpp-supply-2x-12v-hold-cap-120pf?commentID=326637&et=watches.email.thread#comment-326637>
Herby the cutout of the schematics in witch it would function.
See IC 212a and IC 212b as the ADA4610.
C259a and C259b would be 33pF, if necessary.
Please your opinion on this.
Good morning Kris.
Last week I had a question about applications of ADA4610.
You requested a schematic.
Hereby I send . ( attachement ).
IC 212a and IC 212b are the experimental ADA4620(-2).
Capacitors C265a and –b are optional and suggested to be <_ 33pF.
Met vriendelijke groet / Kind regards,
Technical Sales Engineer
Phone Direct +31 6 2280 4256
Fax +31 26 365 2254
Mobile +31 6 2280 4256
Solar Nederland B.V.
6921 RG Duiven
Sorry for the late reply and thank you for providing your schematic. Can you confirm these parameters just so we're on the same page?
IC 212 will be the ADA4610, C265a will be 33pF, the resistor will be 4k. What will the value of the other capacitor be?
That’s correct !
Oh, Kris, excuse me, forgot to mention:
The Hold-capacitor is 120pF, the filter cap C265a will be 33pF.
4k is the output-resistance of the Integrator, preliminary to the Sample-and-Hold, so feeding the Inverting Input of the OpAmp via a CMOS switch
For all the reasons I stated in my first response, I still do think the ADA4610 would be a good fit for the application. My main concern would be that you would effectively have capacitors at your output which might cause instability, but values below 200pF should not be a problem. That is, I do not think instability will be a problem.
Thanks a lot for your opinion.
I can count on the ada4610 and your advise.
Op 30 nov. 2017 om 13:23 heeft krisf <email@example.com<mailto:firstname.lastname@example.org>> het volgende geschreven:
reply from krisf<https://ez.analog.com/people/krisf?et=watches.email.thread> in Operational Amplifiers - View the full discussion<https://ez.analog.com/message/327463-re-ada4610-fitted-for-samplehold-bandwith-2-22khz-signals-up-to-6vpp-supply-2x-12v-hold-cap-120pf?commentID=327463&et=watches.email.thread#comment-327463>
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