— The paper considers some basic problems in the design of tunable fully differential gyrator resonance circuit. First is presented briefly the theory of the parallel gyrator tank with emphasizing on the effects from the amplifier imperfections. Then is considered the design of a single stage operational transconductance amplifier (OTA) with source degeneration for better linearity. It is demon...

The paper proposes fourth order Butterworth complex filter for the Global Positioning System (GPS) receiver, which the center frequency of complex filter is 2MHz and bandwidth is 2 MHz. The operational amplifier (OPA) is designed as twostage fully differential OPA. The gain bandwidth (GBW) of operation amplifier reaches 300MHz, the gain of the DC is 58.3dB, the phase margin is 5 7  and the pow...

Howland circuits have been widely used as powerful source for exciting tissue over a wide frequency range. When a Howland source is designed, the components are chosen so that the designed source has the desired characteristics. However, the operational amplifier limitations and resistor tolerances cause undesired behaviors. This work proposes to take into account the influence of the random di...

A novel design technique employing CMOS Current Feedback Operational Amplifier (CFOA) is presented. The feature of consumption very low power in designing pseudo-OTA is used to decreasing the total power consumption of the proposed CFOA. This design approach applies pseudo-OTA as input stage cascaded with buffer stage. Moreover, the DC input offset voltage and harmonic distortion (HD) of the pr...

In the present study single channel operational amplifier IS-OU1 with 15 V supply voltage (open loop gain ~100-110 dB) design is based on n-p-n type bipolar transistors has been developed. It shown that proposed macromodel sufficiently describes behaviour of amplifier. established obtained electrical parameters characteristics have good agreement requirements. Consequently can be applied in ind...