ADG604Production
The ADG604 is a CMOS analog multiplexer, comprising four
single channels. It operates from a dual supply of ± 2.7 V to
±5.5 V, or from a single supply...
Datasheet ADG604 on Analog.com
The user inquired about harmonic distortion data for the ADG604. The support engineer confirmed that no harmonic distortion data is available for this older part. Another user provided THD measurements using an Audio Precision APX525, showing THD under 0.02% for 1 Vrms input from 20 Hz to 80 kHz, and up to 3.5 Vrms at 1 kHz, with higher distortion at 40 kHz due to the instrument's limitations.
AI Generated Content
Unfortunately there are no available harmonic distortion info/data for the ADG604. This is an old part and harmonic distortion was not characterized before.
May I know the application on how you would want to use ADG604?
I know this is rather old thread, but I plan to use ADG604 in one project and I needed to know its distortion too, so I measured it with Audio Precision APX525. It's basically a network analyzer, except it's designed specifically for audio applications. I used these conditions during measurement:
-Symmetrical supply voltage +-5 V, sourced from Agilent E3630A -ADG604 soldered on SMD breakout board which was then then inserted into standard solderless breadboard -2x 100 nF decoupling capacitors -Unbalanced output and input (BNC connectors) used on APX525 -Output connected to S1 pin, input connected to D pin of ADG604 -Output impedance 20 ohm -Input impedance 100 kohm -Input bandwidth 90 kHz (APX525 maximum, it's an audio analyzer)
First I measured THD vs. frequency from 20 Hz to 80 kHz, source level was 1 Vrms (my project will use this level). THD was under 0.02% in the entire band. I didn't find any way how to directly attach images in this forum, so here is link to Imgur:
Then I measured THD vs. input level, first for 1 kHz and then for 40 kHz. The input level was sweeped from 1 mVrms to 6.3 Vrms. I'm attaching the results below, distortion is under 0,02% up to 3.5 Vrms at 1 kHz. It gets worse at 40 kHz, but keep in mind that 40 kHz is at the usable limit of the instrument, it can't process any harmonics beyond 90 kHz. Overally, i consider that a great result (at least for my project).
