Clockworks’ TechNotes cover a wide range of topics related to Clockworks products. Most of them are developed during the engineering verification stage of testing the various modules in the SignalBlox design. They document the good, the bad, and the just plain ugly mistakes that can happen during product development.
They also provide more details about module performance than a basic datasheet can provide. While not perfect, we feel there’s more to be gained by sharing these than there is just leaving them sitting on a hard drive somewhere. In many cases information about new hardware will appear here before the datasheet and other information as generally we like to test our Rev 1 boards to know the design is OK before offering it up as a purchasable item.
General information and rambling on other topics can be found in the Blog section of the Clockworks website.
Clockworks also publishes AppNotes, these are on a wider range of technical subjects and may not be as in depth as the TechNotes. Or it may be we flipped a coin to decide between the two categories.
The AppNote list can be found here.
| Number | Title | Summary |
|---|---|---|
| TN001 | PWR001 power supply noise sensitivity analysis | A primary supply is used to go from AC power to the 12V input of the Clockworks PWR001 module. This report looks at potential noise feed through from the primary supply. |
| TN002 | Power supply sequencing on the PWR001 triple output module | Looks at the supply sequencing and hold up times relative to the power fail signal. |
| TN003 | Power supply noise sensitivity in an op-amp circuit | Using the PWR001 module with different filters, the impact of supply noise on system noise is measured. |
| TN004 | Power supply noise evaluation in the PWR002 seven output supply | Measurement of output noise under different load conditions with the seven output supply. |
| TN005 | Comparison of noise from 3.3V regulators | Compares ADI's LTC7151 EVM to the CUI and Murata modules currently used |
| TN006 | Power supply load transient response | Documents the measured transient response of the existing power supplies |
| TN007 | LTspice simulation of analog A2B filtering components suggested by ADI. | LTspice files are also posted for download. |
| TN008 | A2B I2S Clock jitter | Analysis of jitter from AD2428 A2B transceiver I2S clock outputs and consideration for impact on ADC and DAC performance. |
| TN009 | AK4490 DAC and A2B I2S clock jitter | Analysis of the effect of AD2428 A2B transceiver I2S clock jitter on AKM's AK4490 stereo DAC, a commonly used audio DAC for high performance audio applications. |
| TN010 | AK4619 4 channel ADC/DAC and A2B I2S clock jitter | Analysis of the effect of AD2428 A2B transceiver I2S clock jitter on AKM's AK4619 quad ADC/DAC, a typical mid performance part for audio applications. |
| TN011 | A2B performance with a custom power scheme | A custom application using local powered AD2437 with galvanic isolation from the A2B bus but also had to forward bus power to the downstream node to allow use of conventional bus powered nodes. |