I have a question regarding the DAC output compliance voltage specification of the AD9910.
The datasheet specifies a recommended compliance voltage of ±0.5 V for the IOUT/IOUTB pins. However, in my application:
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IOUT is terminated with 50 Ω, IOUT Current 20mA
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The single‑ended waveform measures approximately 0 V to 1 V (about 1 V peak)
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Despite this, no noticeable distortion is observed in the measured waveform or spectrum
Given this behavior, I would like to confirm the following:
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Does a single‑ended swing of 0 V to 1 V exceed the ±0.5 V compliance voltage specification?
In other words, should this operating condition be considered outside the recommended compliance range?
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If the output voltage exceeds ±0.5 V, is the internal current‑source cascode likely to leave its compliance region, potentially degrading linearity? Or is there some practical margin that allows limited over‑swing without immediate distortion?
- For a 50‑Ω load, what is the recommended maximum single‑ended (and differential) voltage swing to ensure the DAC remains within its linear operating region?
Although the device appears to operate without visible distortion at 1 V peak single‑ended,
I would like to confirm the official safe operating limits considering temperature, process variation, and long‑term reliability.