This paper reviews the major contributions proposed in literature for implementing multi-band low noise amplifiers in CMOS technology. Concurrent, switched and switched concurrent low noise amplifiers are investigated. Advantages and drawbacks are also discussed. The article tries to offer good insights on the implementation of multi-band low noise amplifiers. Keywords-CMOS; low noise amplifier...

A new continuous-time CMOS current comparator having high speed and low power is proposed as an important component of current mode signal processing unit. It comprises of CMOS complementary amplifier with a feedback MOS resistor, two resistive load amplifiers and two CMOS inverters. Short response delay, low power consumption and small area are some of its features. Due to the absence of bias ...

In this research paper, Simulation and Analysis of innovative folded cascode Operational Amplifier based on carbon nanotubes (CNT) has been performed using 45 nm technology. DC voltage gain, average power, bandwidth and output resistance have been computed. CNT based folded cascode Op Amp results in high performance with the increase of CNTs. For example, the increase in DC gain is 41.48% in pC...

This paper describes a symmetric ultra lowvoltage (ULV) rail-to-rail CMOS amplifiers using floating gates. Simulation of a compact differential ULV amplifier is presented.

An s-domain analysis of the full dynamics of the pole-zero pair (frequency doublet) associated with the broadly used CMOS active-cascode gain-enhancement technique is presented. Quantitative results show that three scenarios can arise for the settling behavior of a closed-loop active-cascode operational amplifier depending on the relative locations of the unity-gain frequencies of the auxiliary...

This paper describes the Q enhancement of inductor or resonance circuit based on the controlled CMOS transonductance, which is applicable to either on-chip inductor or off-chip inductor. The proposed circuit configuration of high Q enhancement is evaluated for the RF transmit filter of a LTE mobile comm’s micro base station, with the Q factor of over 3000 and the capacity of 10W. A tunable filt...

The first frame-transfer CMOS active pixel sensor (APS) is reported. The sensor architecture integrates an array of active pixels with an array of passive memory cells. Charge integration amplifier-based readout of the memory cells permits binning of pixels for variable resolution imaging. A 32 32 element prototype sensor with 24m pixel pitch was fabricated in 1.2m CMOS and demonstrated.

This paper presents a capacitor-less low drop-out (LDO) regulator with current mode transconductance amplifier & slew-rate enhancement circuit. The proposed current mode transconductance amplifier as error amplifier improves the slew rate & slewrate enhancement circuit further senses the transient voltage at the output of the LDO to increase the bias current of the error amplifier for a short d...

Sense amplifiers are one of the most vital circuits in the margin of CMOS memories. Their performance influences both memory access time and overall memory power dissipation. The existing Current-Mode Sense Amplifier coupled with a simplified read-cycle-only memory system has the ability to quickly amplify a small differential signal on the Bit-Lines (BLs) and Data-Lines (DLs) to the full CMOS ...

–This paper presents a highly linear Operational Transconductance Amplifier (OTA) that combines two linearization techniques, one with adaptive biasing of differential pairs and second with resistive source degeneration. The Operational Transconductance Amplifier has ±0.9v power supply. Operational Transconductance Amplifier has been simulated with TANNER 0.18μm CMOS technology in Tspice. The s...