Patent ID: 6885329

Claim:
An integrated circuit signal generator for generating an analog output signal representative of a square waveform, the signal generator comprising: an on-chip DAC having an analog output for outputting the analog output signal representative of the square waveform, an on-chip storing circuit comprising an on-chip first digital word storing register for storing a first digital word corresponding to a maximum analog value of the analog output signal, and an on-chip second digital word storing register for storing a second digital word corresponding to a minimum analog value of the analog output signal, an on-chip switch circuit for selectively and alternatively switching the first and second digital word storing registers to the DAC, and an on-chip control circuit for controlling the switch circuit for selectively and alternately loading the first and second digital words from the respective first and second digital word storing registers into the DAC for producing the analog output signal representative of the square waveform.