• List of Articles body effect

      • Open Access Article

        1 - Design and implementation of a low voltage regulator and stabilized output using the body power supply solution
        vahid dahideh hamed aminzadeh عبدالرسول Ghasemi
        In this paper, we have designed and implemented low voltage drop regulators and very small output changes using new solutions. In the regulator circuit structure, for the first time, two solutions of body power supply and variable voltage reference have been used. The p More
        In this paper, we have designed and implemented low voltage drop regulators and very small output changes using new solutions. In the regulator circuit structure, for the first time, two solutions of body power supply and variable voltage reference have been used. The power supply of the body, with the aim of increasing the gain of the regulation loop and using the variable voltage reference, has been done with the aim of further stabilizing the output voltage and increasing the power supply removal ratio (PSRR). Another important point in this paper is the implementation of the error amplifier with the help of three single-headed operational amplifiers with PMOS input, which significantly increases the accuracy of the regulation loop. The obtained PSRR value is equal to 46dB at a frequency of 1KHz. The input voltage can vary between 1.8V to 2.5V and the stabilized output voltage is 1.6V. The maximum output voltage ripple is equal to 1mV, which is equivalent to 0.03%. The output ohmic load is equal to 20  and the average capacitive load is equal to 100pF. The maximum output current for the desired output impedance and voltage drop of 0.2V is equal to 80mA. Manuscript profile
      • Open Access Article

        2 - Design of Low-Power CMOS OTA Using Bulk-Drive Technique
        Maryam Ghadiri Modarres
        This paper presents the design of low power CMOS- OTA (operational transconductance amplifier) using bulk drive (BD) technique with broad band. This technique is used for design of low power circuits with broad band for high frequency users, for example communication sy More
        This paper presents the design of low power CMOS- OTA (operational transconductance amplifier) using bulk drive (BD) technique with broad band. This technique is used for design of low power circuits with broad band for high frequency users, for example communication systems, mobile communication and communication forming of medical electronics. OTA is the base of amplifier .It is a fundamental building part of analog systems. Recently analog designer has been paid to low voltage (LV),low power (LP) integrated circuits. Many techniques are used for the design of LV LP circuits, the bulk driven offers principle this designs. This paper suggests a bulk driven OTA in standard CMOS processes and supply voltage 0.8 volt DC. It used of improved wilson current mirror. The simulation results have been carried out by the HSPICE simulator in 180 nm CMOS technology. The open loop gain is enhanced to 17.4dB at unity gain band with (UGB) of 26.1 MHZ with sufficient output swing. Power consumption of the OTA is in range of few hundreds of nanowatts (6%). Manuscript profile