Patent ID: 9240812
Filing Date: 2016-01-19
CPC Classification: H03F,H04B

Claim Text:
1. A power amplification device comprising: a first power-amplifier array including a plurality of first switching elements that constitute a plurality of class-D power amplifiers for a plurality of most significant bits respectively; a second power-amplifier array including a plurality of second switching elements that constitute a plurality of class-D power amplifiers for a plurality of least significant bits respectively, the plurality of second switching elements having a larger on-resistance than the plurality of first switching elements; and a capacitor array including a plurality of capacitors that include a plurality of first capacitors that are connected to the plurality of first switching elements respectively and are driven when the plurality of first switching elements are turned on and a plurality of second capacitors that are connected to the plurality of second switching elements respectively and are driven when the plurality of second switching elements are turned on, wherein the first power-amplifier array is arranged between the second power-amplifier array and the capacitor array.