[sdiy] AD633: Z inputs and W Loops

alfred.pear at gmail.com alfred.pear at gmail.com
Wed Feb 20 03:14:52 CET 2013

Got it...thank you.

On Tue, Feb 19, 2013 at 1:47 PM, Tim Ressel <timr at circuitabbey.com> wrote:
> The resistor network adds gain. Look at figure 16 of the data sheet. It has R1 between W and Z, and R2 from Z to a point called "s", which we will ground for this. The gain is shown as (R1+R2)/R1.
> Tim Ressel
> Circuit Abbey
> 503-750-9331
> timr at circuitabbey.com
>> From: "alfred.pear at gmail.com" <alfred.pear at gmail.com>
>>To: synthdiy diy <synth-diy at dropmix.xs4all.nl>
>>Sent: Tuesday, February 19, 2013 7:43 AM
>>Subject: [sdiy] AD633: Z inputs and W Loops
>>Hi all -
>>Apologies for chronic beginner questions -
>>but I'm working a bit on revising my AD633 ring modulator schematic
>>and I don't fully understand the relationship re: the resistor from
>>the W output to the Z output and from the Z output to ground.
>>I understand that there is some sort of gain addition (+ Z, according
>>to the datasheet) - but I don't totally understand how to do the math
>>to determine this gain, nor do I understand how the resistor from W
>>factors in to this equation.
>>Hope you are all having productive mornings!
>>Synth-diy mailing list
>>Synth-diy at dropmix.xs4all.nl
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