Georgia Tech inventors have created a reconfigurable mixed signal distributed arithmetic system, which includes three parts. The first part involves an array of tunable voltage references operable for receiving a delayed digital input signal. The second part involves a combination device in electrical communication with the array of tunable floating-gate voltage references that selectively combines an output of the array of tunable voltage references into an analog output signal. Lastly, a feedback element in electrical communication with the combination device, wherein the array of tunable voltages and the delayed digital input signal combine to perform a distributed arithmetic function. This results in the reconfigurable mixed signal distributed arithmetic system responsively generates the analog output signal.
- Less power required
- Use less memory
- Less chip area
- High throughput
- Simple – requires less inputs
- Low-power hearing aids
- Low-power audio applications
- High-speed equalizers
- Channel equalization
- Filter reconstruction
- Noise cancellation, suppression, and shapers
- Radar and sonar applications
The battery life of portable electronics has become a major design concern as greater functionality is incorporated into portable electronic devices. The shrinking power budget of modern portable devices requires the use of low-power circuits for signal processing applications. These devices include, but are not limited to, flash memory and hard disk based audio players. The data, or media, in these devices is generally stored in a digital format, but the output is still synthesized as an analog signal. The signal processing functions employed in such devices have traditionally been performed using digital signal processing (DSP). DSP implementations typically make use of multiply-and-accumulate (MAC) units for the calculation of these operations, and as a result the computation time increases linearly as the length of the input vector grows.