公开(公告)号：US09692445B1

公开(公告)日：2017-06-27

申请号：US15072837

申请日：2016-03-17

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Brent Peterson ,  Joonsung Park ,  Krishnaswamy Nagaraj ,  Tyler Witt

IPC: H03M1/10 ,  H03M3/00

CPC classification number: H03M3/30 ,  G06G7/26 ,  H03M3/50 ,  H03M7/3042

Abstract: A system includes a storage device containing machine instructions and a plurality of digital values of an oversampled sinuisoidal signal. The system also includes a core coupled to the storage. The core is configured to execute the machine instructions, wherein, when executed, the machine instructions cause the core to implement a sigma-delta modulator that retrieves the plurality of digital values from the storage device as input to the modulator. The sigma-delta modulator is configured compute an output bit stream. The system further includes an analog filter configured to receive the output bit stream from the core and to low-pass filter the output bit stream to produce a sinusoidal output signal.