![]() ![]() The goal is to see if this PDN can be improved and simplified, while ensuring its output noise does not cause any significant degradation in the DAC performance. The PDN comprises an ADP5054 discrete quad switcher and three low dropout (LDO) postregulators. Figure 1 shows the standard power distribution network for the AD9175 high speed DAC as installed on the off-the-shelf evaluation board. Let’s look at optimizing a PDN for this dual high speed DAC. Standard PDN of an AD9175 high speed DAC, which comes on the off-the-shelf evaluation board. The device features an 8-lane,15.4 Gbps JESD204B data input port a high performance, on-chip DAC clock multiplier and digital signal processing capabilities targeted at single-band and multiband direct to radio frequency (RF) wireless applications. The AD9175 is a high performance, dual, 16-bit digital-to-analog converter (DAC) that supports DAC sample rates up to 12.6 GSPS. Power System Optimization for the AD9175 Dual 12.6 GSPS High Speed Digital-to-Analog Converter Subsequent articles will explore specific optimization solutions for other signal chain devices, such as RF transceivers. We compare a standard PDN to an optimized PDN to see where gains can be made in space, time, and cost. Here, we dive deeper into the details of optimizing power distribution networks for high speed data converters. ![]() This article builds on the generalized overview of the effects of power supply ripple in high performance signal chains. Optimizing a power distribution network improves these parameters, while lowering noise to necessary levels. As noted in Part 1, a pure focus on minimizing noise can come at the cost of increased size, higher cost, or lower efficiency. The question was asked: What are the real noise limits to achieve superior performance of high performance analog signal processing devices? Noise is just one measurable parameter in designing a power distribution network (PDN). ![]() In Part 1 of this power system optimization series, we examined how power supply noise sensitivity can be quantified and how these quantities can be connected to real effects in the signal chain. Patrick Errgy Pasaquian Download PDF Introduction The dates of this longer outage will be announced on this page and by emailed notices to registered users as soon as they are known.Optimizing Power Systems for the Signal Chain-Part 2: High Speed Data Converters In addition to these dates, the signal is likely to be taken off-air for a two-week period during summer each year, though the transmission will be restored overnight whenever possible. The duration of each outage period will be kept to a minimum, and the signal may be back on-air prior to the times given above. The shutdowns will take place between 10:00 and 14:00 BST in June and September, and between 10:00 and 14:00 UTC in December. A radio-controlled clock will not be able to pick up the MSF signal during these periods, so may drift off from the correct time. The signal is occasionally taken off-air to allow maintenance work on the masts and antennas at Anthorn Radio Station to be carried out in safety. If the weather is unsuitable for work to be carried out, then the service will not be turned off. The transmission will be restored overnight whenever possible. ![]() A scheduled annual maintenance shutdown of the MSF service to allow safe working on the masts and antennas will take place from Monday 4 th April to Thursday 21 st April 2022.Ġ8:00 to 18:00 BST each day, including weekends ![]()
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