![]() ![]() As a result, the analog circuit in the converter consumes most of the power and current. In this block diagram, the sample/hold, comparator, most of the digital-to-analog converters and 12-bit SAR are all analog the rest of the circuit is digital. To estimate the different block structure of the circuit system and the chip, the SAR converter is obviously an analog device. These components need to pay more attention to avoid the digital feedback of the serial or parallel output interface of the converter. Except for high-resolution components, the basic way of wiring remains the same. However, these components have recently become CMOS manufacturing processes that use capacitor charging and distribution technology, and the system wiring of these converters will not change with this transition. In the beginning, the manufacturing process and structure of these converters were two-carrier and R-2R ladder resistor networks, respectively. The resolution of the SAR analog-digital converter is 8-bit, 10-bit, 12-bit, 16-bit, and sometimes 18-bit. This article will discuss the use of continuous approximation buffer (SAR) and Sigma-Delta analog-to-digital converter circuit board wiring methods.Ĭontinuous approximation buffer type converter wiring When a wiring designer deals with mixed-signal circuits, he still needs basic wiring knowledge if he wants to make the wiring work well. Even if it changes from analog to digital in the chip, the circuit board wiring work has not changed. Due to the improvement of the pcb design, slow analog-to-digital converters have mostly become digital. At first, most of the analog-to-digital converters in the chip are still composed of analog circuits. This article will introduce the wiring method of using continuous approximation buffer type and Sigma-Delta type analog-to-digital converter. Even with such changes, the PCB circuit wiring design has not changed. In the new design of the converter, most of the analog-digital converters have become digital. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
December 2022
Categories |