Conceptually, sub-threshold means that you never exceed the turn on voltage of the transistor. Sub-threshold design was first conceived 30 years ago, but Ambiq was the first to build a comprehensive platform.
One of the other areas where we’ve seen incredible progress with circuit size is in dropping voltage. New transistor architectures are also being advanced, and because the structures themselves are much better than they’ve been in years past even lower power consumption is possible. Whether its performance, lower power, or less leakage, more choices mean greater freedom to design a device according to your needs. And since voltage is a primary energy knob in a system, huge energy gains are possible.Īs a designer, lower power transistors mean a great deal of flexibility. On top of that, because the transistor is faster the voltage can also be decreased. What’s commonly ignored though is that the decrease in transistor size means power consumption goes down as well. This means you can fit more transistors on a chip, the cost per transistor goes down, and the overall performance improves.
Will drop power consumption drivers#
Similar to the progress seen in the smartphone industry, Moore’s Law has been one of the strongest drivers of energy efficiency gains because it has allowed us to consistently decrease the size of the transistors. One area that’s helped drive the chip power down is Moore’s Law. The good news is there has been some notable progress developing over the last few years. When power consumption from components such as display, processors, sensors, radio, and the power management system are totaled, it’s easy to see why there’s a big problem-particularly in use cases when you want clothing wearables to have enough battery power to last a year or more. To begin understanding how battery technology can be progressed, it’s important to not only look at the energy being delivered to the system but also the components that are consuming energy. When you take a look at mobile computing improvements over a 10-year period, battery energy density has seen much less progress in terms of technology when you compare it to elements such as disk capacity, CPU speed, available RAM, and wireless transfer speed. When you factor in new functions such as cellular radios, new bio sensors, and additional sensor analysis constantly being added each year to these devices, there’s even more strain being placed on battery power to operate each of these additional features. Since batteries are what take up a majority of the space within a wearable, battery and chip size is commonly compromised in favor of sleeker designs. Though the battery life of high-end wearables has drastically improved recently, there is also more pressure within the industry to create smaller, thinner designs.
Will drop power consumption Bluetooth#
High resolution color displays, activity trackers, heart rate monitoring, GPS tracking, and Bluetooth radio are just a few of the functions that require more battery power to operate. While older sports wrist wearables had very basic functions like a stopwatch, alarm, and calendar contained a battery that would last for up to three years, current models from Garmin and Suunto are much more complex wrist-based computers and need to be charged much more frequently. One reason for this is the recent advancement in wearable technology. And while that’s exciting for the potential of wearables and the impact they will have over consumer’s lives, the need to replace billions of batteries every year and constantly charge throughout the day is a big problem that needs to be addressed. By 2020, it is estimated that over 50 billion devices will be in use. In the past five years, the number of connected devices in circulation has increased by over 20 billion. Fortunately, recent advancements in lower power consumption technology are changing what’s possible for the future of wearable devices. And while current technology continues to improve, there are still many obstacles that must be overcome to enhance the overall user experience.īattery life is one such problem that limits how wearables can be used due to the need to frequently recharged or replace the battery in these devices. From fitness to health monitoring devices, wearables have become a big part of many consumer’s daily lives.
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