Digital-to-analog converter (DAC) data generator circuit

Patent metadata

Field	Value
Publication number	US-12283970-B2
Application number	US-202318101597-A
Country	US
Kind code	B2
Filing date	Jan 26, 2023
Priority date	Jan 27, 2022
Publication date	Apr 22, 2025
Grant date	Apr 22, 2025

Abstract

A device having a digital-to-analog converter (DAC) data generator circuit to perform a function upon an event and generate digital DAC data based on the function and the event, and a DAC circuit to generate an analog waveform signal from the digital DAC data.

First claim

The invention claimed is:

1. A device, comprising:
a digital-to-analog converter (DAC) data generator circuit to:
perform a function upon an event; and
generate DAC data based on the function and the event; and
a DAC circuit to generate an analog waveform signal from the digital DAC data,
wherein the function is performed on a digital input data series, wherein:
the digital input data series includes a first digital input value and a second digital input value; and
generating DAC data comprises performing a mathematical operation on the first digital input value and the second digital input value.

2. The device of claim 1 , wherein the function clones a value of a selectable register and the event comprises an event selected from:
(a) a pulse width modulation (PWM) event,
(b) a configurable custom logic event,
(c) a data signal modulator event,
(d) a capture compare PWM event,
(e) comparator output (CMP) event, and
(f) timer event.

3. The device of claim 2 , wherein the selectable register is a timer count register.

4. The device of claim 2 , wherein the selectable register is an analog-to-digital converter register.

5. The device of claim 2 , wherein the function increments, or decrements, a DAC data register with a selectable value and the event comprises an event selected from:
(a) a data signal modulator event;
(b) a configurable custom logic event;
(c) an input, or output, event;
(d) a pulse width modulation event;
(e) a timer event;
(f) a comparator output (CMP) event; and
(g) a clock frequency event.

6. The device of claim 5 , wherein the selectable value is a value stored in an increment or decrement register, a value stored in a timer count register, or a value stored in an analog-to-digital register value.

7. The device of claim 1 , wherein the function increments, or decrements, a DAC data register with a selectable value and the event comprises an event selected from:
(a) a data signal modulator event;
(b) a configurable custom logic event;
(c) an input, or output, event;
(d) a pulse width modulation event;
(e) a timer event;
(f) a comparator output (CMP) event; and
(g) a clock frequency event.

8. The device of claim 7 , wherein the selectable value is stored in an increment or decrement register.

9. The device of claim 7 , wherein the selectable value is a timer count register value.

10. The device of claim 7 , wherein the selectable value is an analog-to-digital converter data register value.

11. The device of claim 1 , wherein the analog waveform signal generated from the DAC data is a waveform selected from: a sawtooth waveform signal, a triangular waveform signal, a trapezoidal waveform signal, and a sinusoidal waveform signal.

12. A method, comprising:
performing a function upon an event via a digital-to-analog converter (DAC) data generator circuit;
generating DAC data based on the function and the event; and
generating an analog waveform signal from the DAC data via a DAC circuit,
wherein performing the function is on digital input data series wherein the digital input data series includes a first digital input value and a second digital input value; and
wherein generating the digital DAC data comprises a performing a mathematical operation on the first digital input value and the second digital input value.

13. The method of claim 12 , wherein performing the function comprises selecting a register and cloning a value of the selected register and the event comprises an event selected from:
(a) pulse width modulation (PWM) event,
(b) configurable custom logic event,
(c) data signal modulator event,
(d) capture compare PWM event,
(e) comparator output (CMP) event, and
(f) timer event.

14. The method of claim 13 , wherein selecting the register comprises selecting a timer count register.

15. The method of claim 13 , wherein selecting the register comprises selecting an analog-to-digital converter register.

16. The method of claim 13 , wherein performing the function comprises selecting a value and incrementing or decrementing a register with the selected value and the event comprises an event selected from:
(a) data signal modulator event;
(b) configurable custom logic event;
(c) input/output event;
(d) pulse width modulation event;
(e) timer event;
(f) comparator output (CMP) event; and
(g) clock frequency event.

17. The method of claim 12 , wherein performing the function comprises selecting a value and incrementing or decrementing a register with the selected value and the event comprises an event selected from:
(a) data signal modulator event;
(b) configurable custom logic event;
(c) input/output event;
(d) pulse width modulation event;
(e) timer event;
(f) comparator output (CMP) event; and
(g) clock frequency event.

18. The method of claim 17 , wherein selecting the value comprises selecting a value that is stored in an increment or decrement register.

19. The method of claim 17 , wherein selecting the value comprises selecting a timer count register value.

20. The method of claim 17 , wherein selecting the value comprises selecting an analog-to-digital converter register value.

Assignees

• Microchip Tech Inc
• Microship Tech Incorporated

Inventors

• Turcan Gheorghe

Classifications

• H03M1/10

  Calibration or testing · CPC title

• H03M1/0626

  by filtering · CPC title

• H03M1/66 Primary

  Digital/analogue converters ({H03M1/001 – } H03M1/10 take precedence) · CPC title

• G06F1/022 Primary

  Waveform generators, i.e. devices for generating periodical functions of time, e.g. direct digital synthesizers (G06F1/025, G06F1/03 take precedence) · CPC title