A new precision full-wave rectifier employing only two differential difference current conveyors, which is very suitable for CMOS technology implementation, is presented. The proposed rectifier is the voltage-mode cir...A new precision full-wave rectifier employing only two differential difference current conveyors, which is very suitable for CMOS technology implementation, is presented. The proposed rectifier is the voltage-mode circuit, which offers high-input and low-output impedance hence it can be directly connected to load without using any buffer circuits. PSPICE is used to verify the circuit performance. Simulated rectifier results based-on a 0.5 μm CMOS technology with ±2.5 V supply voltage demonstrates high precision rectification and excellent temperature stability. In addition, the application of proposed rectifier to pseudo RMS-to-DC conversion is also introduced.展开更多
A novel four-input three-output voltage-mode differential difference current conveyor (DDCC) based universal filter is presented. The circuit uses three DDCCs as active elements, two resistors and two capacitors as pa...A novel four-input three-output voltage-mode differential difference current conveyor (DDCC) based universal filter is presented. The circuit uses three DDCCs as active elements, two resistors and two capacitors as passive elements. The circuit along with its versatility enjoys the advantage of minimum number of passive elements employment. SPICE simulation results are given to confirm the theoretical analysis. The proposed circuit is a novel addition to the existing knowledge on the subject.展开更多
提出了一种具有宽电流可调谐范围的新型CMOS电调谐第二代电流传输器(ECCII),通过引入基于差分差动电流传输器(DDCC)的对数反对数电流放大器,使电流增益通过偏置电流连续可调,在一定偏置电流下,调节系数0<k≤10。输入端采用的轨对轨...提出了一种具有宽电流可调谐范围的新型CMOS电调谐第二代电流传输器(ECCII),通过引入基于差分差动电流传输器(DDCC)的对数反对数电流放大器,使电流增益通过偏置电流连续可调,在一定偏置电流下,调节系数0<k≤10。输入端采用的轨对轨结构通过在其第二级加入共源共栅电流镜,提高了电压跟随精度。采用SMIC 0.18μm CMOS工艺参数,在±1V的供电电源条件下,用Spectre对电路进行仿真。结果表明:vx/vy和iz/ix的-3 d B带宽分别为300 MHz和155 MHz,电压跟随精度为0.997,功耗为1.642 4 m W。经验证,该电路可用于设计可调谐连续时间电流模式滤波器,具有广泛的应用前景。展开更多
文摘A new precision full-wave rectifier employing only two differential difference current conveyors, which is very suitable for CMOS technology implementation, is presented. The proposed rectifier is the voltage-mode circuit, which offers high-input and low-output impedance hence it can be directly connected to load without using any buffer circuits. PSPICE is used to verify the circuit performance. Simulated rectifier results based-on a 0.5 μm CMOS technology with ±2.5 V supply voltage demonstrates high precision rectification and excellent temperature stability. In addition, the application of proposed rectifier to pseudo RMS-to-DC conversion is also introduced.
文摘A novel four-input three-output voltage-mode differential difference current conveyor (DDCC) based universal filter is presented. The circuit uses three DDCCs as active elements, two resistors and two capacitors as passive elements. The circuit along with its versatility enjoys the advantage of minimum number of passive elements employment. SPICE simulation results are given to confirm the theoretical analysis. The proposed circuit is a novel addition to the existing knowledge on the subject.
文摘提出了一种具有宽电流可调谐范围的新型CMOS电调谐第二代电流传输器(ECCII),通过引入基于差分差动电流传输器(DDCC)的对数反对数电流放大器,使电流增益通过偏置电流连续可调,在一定偏置电流下,调节系数0<k≤10。输入端采用的轨对轨结构通过在其第二级加入共源共栅电流镜,提高了电压跟随精度。采用SMIC 0.18μm CMOS工艺参数,在±1V的供电电源条件下,用Spectre对电路进行仿真。结果表明:vx/vy和iz/ix的-3 d B带宽分别为300 MHz和155 MHz,电压跟随精度为0.997,功耗为1.642 4 m W。经验证,该电路可用于设计可调谐连续时间电流模式滤波器,具有广泛的应用前景。
