This document discusses the power consumption of the ADSP-21262S SHARC® DSPs based on characterization data measured over power supply voltage, core frequency (CCLK) and ambient operating temperature (TA). The intent of this document is to assist board designers in estimating their power budget for power supply design and thermal relief designs using the ADSP-21262S DSP.
This document is an Engineer-to-Engineer Note (EE-216) from Analog Devices that discusses power consumption of the ADSP-21262S SHARC DSP. It details how to estimate total power consumption by calculating internal circuitry power and external output driver switching power based on characterization data.
| Core Clock Frequency | up to 200MHz |
|---|---|
| Core Operating Voltage | 1.2V |
| I/O Operating Voltage | 3.3V |
| Maximum Junction Temperature | +125°C |
| Max Power (mBGA package) | 1.95W |
| Max Power (LQFP package) | 1.69W |
The power dissipation should not exceed 1.95W in the mBGA package for proper DSP operation.
The power dissipation should not exceed 1.69W in the LQFP package for proper DSP operation.
The junction temperature is calculated as Tj = Ptotal x ThetaJA + Ta.