3results about How to "Reduce circuit complexity" patented technology

The utility model discloses a heat management controller, include: main control chip, first step -down module, first high side drive module, second step -down module and second high side drive module, first step -down module reduces first direct current voltage and exports second direct current voltage, and first high side drive module receives second direct current voltage and provides first load under the control of main control chip, and second step -down module is connected with first step -down module, main control chip and second high side drive module, and second step -down module is used for reducing second direct current voltage and provides third direct current voltage for main control chip and second high side drive module, and second high side drive module provides third direct current voltage for second load under the control of main control chip.The utility model discloses heat management controller has integrated the power supply function of traditional need low voltage battery direct power supply's first load, both convenient for power supply management, also be favorable to reduce heat management system's circuit complexity and reduce system electronic cost.

The application belongs to the field of analog integrated circuit design, and particularly relates to a redundant current range current steering DAC based on digital pre-distortion. The application carries out rotation correction through an improved DEM decoding circuit, measures and quantizes error codes corresponding to the static mismatch error of each current unit, and reduces the circuit area and the influence of additional circuit parasitic on the DAC speed without additional control circuit. A redundant current unit is introduced at the highest bit to expand the quantization range, and the error code and clipping problem introduced by DPD correction are solved. Only a simple algorithm of a 14-bit adder and a 14-bit subtractor is needed to directly operate on binary codes, and a secondary decoding is used to realize thermometer code addition operation compatible with DEM, so that the timing delay and circuit complexity of the thermometer code addition circuit are greatly reduced. The circuit timing delay of the application meets the speed requirement of high-speed and high-precision current steering DAC, and compared with DEM correction only, the application significantly improves the SFDR without raising the noise floor.

This application provides a multi-channel air pressure acquisition system, method, device, and medium for semiconductor devices. A MEMS air pressure sensor detects the air pressure in a corresponding gas pipeline, converts the air pressure into a raw electrical signal, and sends it to a signal processing circuit. The signal processing circuit processes the received raw electrical signals to obtain multiple target electrical signals. A multi-channel selection switch circuit sequentially connects each target electrical signal according to a preset order corresponding to the channel selection signal. An AD acquisition circuit converts each selected target electrical signal into digital air pressure data and sends the digital air pressure data to an FPGA circuit. The FPGA circuit processes the multiple digital air pressure data and sends the processed target air pressure data to a host computer through the data interface circuit. This system and method achieve time-division multiplexing and centralized acquisition of multiple air pressure sensor signals, which is beneficial for improving integration and maintenance convenience.