| Summary | ||||
|---|---|---|---|---|
| Parameter | My Opinion Digital/Analog |
Mode of Operation |
||
| Analog Input to Digital Output | Buffered Analog Input to Digital Output | |||
| Frequency Response | Excellent/Excellent | 20-20kHz +0.0/-0.4 dB | 20-20kHz +0.0/- 0.25 dB | |
| 1 kHz Total Harmonic Distortion | Excellent/Excellent | 0.0017% @ -0.2 dB | 0.0018% @ -0.7 dB | |
| Signal to Noise Ratio | Excellent/Excellent | 87 dB | 88 dB | |
| 20 Hz Total Harmonic Distortion | Excellent/Excellent |
|||
| 19 & 20 kHz Intermodulation Distortion | Excellent/Excellent | 0.0027% @ -1 dB | 0.0036% @-1.5 dB | |
| Dynamic Range | Excellent/Excellent | 90 dB | 90 dB | |
| Jitter Distortion | Excellent/Excellent | <-113 dB | -110 dB | |
| Equipment Used: | Signals generated and processed into computer using an LynxONE. Signal analysis with SpectraLab 3.32.14. | |||
reference level = 0.72 volts
Discussion Of Results
The input buffer (Composed of a MC33202P dual opamp chip) improved high the frequency response of the CS5330AKS ADC chip, with negligable adverse effects.
Overall, the "ackDAC" Analog-to-Digital Converter seemed very well suited to its intended purpose of adding two (switchable) analog inputs to consumer equipment with spare digital inputs.
| Holtmods ackDAC-ADC Frequency response (Analog Input to Digital Output) |
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| Holtmods ackDAC-ADC Frequency response (Analog Input to Digital Output) |
| Holtmods ackDAC-ADC 1 kHz Total Harmonic Distortion and Noise (Analog Input to Digital Output) |
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| Holtmods ackDAC-ADC 1 kHz Total Harmonic Distortion and Noise (Analog Input to Digital Output) |
| Holtmods ackDAC-ADC 20 Hz Total Harmonic Distortion and Noise, Media to Output |
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| Holtmods ackDAC-ADC 20 Hz Total Harmonic Distortion and Noise (Analog Input to Digital Output) |
| Holtmods ackDAC-ADC Residual Noise - (Dynamic Range) ( Analog Input to Digital Output) |
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| Holtmods ackDAC-ADC Residual Noise - (Dynamic Range) ( Analog Input to Digital Output) |
| Holtmods ackDAC-ADC IM Distortion ( Analog Input to Digital Output) |
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| Holtmods ackDAC-ADC IM Distortion; (Analog Input to Digital Output) |
| Holtmods ackDAC-ADC FM Distortion - "Jitter" ( Media to Signal Output) |
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| Holtmods ackDAC-ADC FM Distortion - "Jitter" (Analog Input to Digital Output) |
| Holtmods ackDAC-ADC Frequency Response, Buffered Analog Input to Digital Output |
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| Holtmods ackDAC-ADC Frequency Response, Buffered Analog Input to Digital Output |
| Holtmods ackDAC-ADC Total Harmonic Distortion and Noise, Buffered Analog Input to Digital Output |
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| Holtmods ackDAC-ADC Total Harmonic Distortion and Noise, Buffered Analog Input to Digital Output |
| Holtmods ackDAC-ADC Intermodulation, Buffered Analog Input to Digital Output |
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| Holtmods ackDAC-ADC Intermodulation, Buffered Analog Input to Digital Output |
| Holtmods ackDAC-ADC Dyanic Range, Buffered Analog Input to Digital Output |
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| Holtmods ackDAC-ADC Dynamic Range, Buffered Analog Input to Digital Output |
| Holtmods ackDAC-ADC 20 Hz Total Harmonic Distortion and Noise, Buffered Analog Input to Digital Output |
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| Holtmods ackDAC-ADC 20 Hz Total Harmonic Distortion and Noise Buffered Analog Input to Digital Output |
| Holtmods ackDAC-ADC Jitter, Buffered Analog Input to Digital Output |
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| Holtmods ackDAC-ADC Jitter, Buffered Analog Input to Digital Output |
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