This paper describes an instrumentation amplifier (INA) with three operational amplifier (op amp) topology, for biomedical applications. To achieve low offset new circuit technique is achieved by adding NMOS transistor and two phase clock scheme with a frequency of 20 KHz. With the unity gain bandwidth of 92 KHz , the open loop gain of this instrumentation amplifier is found to be 50 dB and hav...

A 2.4 GHz CMOS RF front-end using for ZigBee application is described. The front-end consists of a low noise amplifier and a down-mixer and uses a 2 MHz IF frequency. A common source with resistive feedback and an inductive degeneration are adopted for a low noise amplifier, and a 20 dB gain control step is digitally controlled. A passive mixer for low current consumption is employed. The RF fr...

A CMOS operational amplifier with input/output rail-to-rail range is presented. The circuit operates with a 1-V single supply. It uses dynamically biased input level shifters, controlled by a novel tuning scheme, to extend the input common-mode voltage range from one rail to the other. The tuning circuit takes the total biasing current of the amplifier input stage and, hence, its small-signal r...

A CMOS radio-frequency power amplifier including on-chip matching networks has been designed in a 0.6m n-well triple-metal digital CMOS process, and optimized using a simulated-annealing-based custom computer-aided design tool. A compact inductor model enables the incorporation of parasitics as an integral part of the parasitic-aware design and CAD optimization; low-Q metal3 spiral inductors ar...

This paper describes the design of a power amplifier (PA) for 802.11n WLAN fabricated in 65nm CMOS technology. The PA utilizes 3.3V thick gate oxide (5.2nm) transistors and a twostage differential configuration with integrated transformers for input and interstage matching. A methodology used to extract the layout parasitics from electromagnetic (EM) simulations is described. For a 72.2Mbit/s, ...

We propose a mode-locking method optimized for the cascode structure of an RF CMOS power amplifier. To maximize the advantage of the typical mode-locking method in the cascode structure, the input of the cross-coupled transistor is modified from that of a typical mode-locking structure. To prove the feasibility of the proposed structure, we designed a 2.4 GHz CMOS power amplifier with a 0.18 μm...

A 5GHz low power consumption LNA has been designed here for the receiver front end using 90nm CMOS technology. The ‘current reuse’ technique has been used here to reuse the bias current for two amplifier stages stacked upon each other. An inverter type amplifier acts the second stage to a common source first stage thereby giving a good gain for the amplifier. The gain achieved is around 13dB wi...

This paper describes the design of a current mode instrumentation amplifier using second generation current conveyor(CCII). The current mode approach offers several advantages such as high speed, better noise performance and lower power consumption as compared to conventional voltage mode approach. The design is implemented in standard 65 nm CMOS technology. Simulation is done in cadence enviro...

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