A simple microprocessor controlled mini-electrochemical (EC) instrument integrating with square wave voltammetry (SWV) was designed nd fabricated. Direct digital frequency synthesizer (DDFS) was exploited in the circuit design to generate a linear and very low frequency canning waveform for SWV. An ultra-low bias current, a high performance operational amplifier, a lock-in amplifier, and severa...

The IEICE Electronics Express Editorial Committee has concluded that the technical content, a large part of sentences, English expressions, and figures in this letter [1] are almost or completely identical as those in the previously published papers [2, 3]. We seriously consider this piracy-friendly problem. According to the ethic code of IEICE, we decided that it is appropriate to delete the p...

A key issue in the design of biomedical implants is the design of low-power area-efficient circuits that allow for highdensity neural recording. This paper presents an ultra low-power (<1.4μW ), area efficient low-noise neural amplifier that utilizes current-feedback miller-compensation technique and occupies <0.08mm silicon area. Integrating the large input capacitor within the electrodes save...

Recently, Low noise amplifier versatile used in modern wireless communication like Wi-Max, WLAN, GSM, Bluetooth and satellite communication. Low Noise amplifier have important feature like amplify the signal with rejection of noise. Low noise amplifier in modern communication used as filter with amplifier. In recent scenario low noise amplifier available in wide band, single band, multi-band fr...

This paper shows the design of a broadband low noise amplifier (LNA) for ultra-wideband (UWB) system on 0.18um CMOS process. The proposed LNA uses resistive shunt feedback technique and an inter-stage inductor as an inductive peaking to realize the flat gain throughout the UWB band. The designed UWB LNA has a noise figure lower than 3.5dB, gain above 20dB in the frequency range 3. 1-10.2GHz. It...

This paper describes a straightforward methodology for ultra low power design of a radiofrequency building block in CMOS technology. This design methodology is based on two parameters: First, the inversion coefficient of the transistor and the extracted equations from the radiofrequency circuits. Second, an optimum tradeoff between the performance key parameters such power consumption, gain, no...

A design and optimization of 3-5 GHz single ended Radio Frequency (RF) Low Noise Amplifier (LNA) for ultra-wide-band (UWB) applications using standard UMC 0.18 μm CMOS technology is reported. Designing of RF circuit components is a challenging job, since even after performing lengthy calculations and finding parameter values it is less guarantee that the design performs as expected. In view of ...

This brief presents an ultra-low-power low-noise chopped capacitively coupled instrumentation amplifier (CCIA) that is suitable for neural recording applications. An active highpass filter is embedded in the ripple reduction loop (RRL) to suppress the residual noise and relax the capacitor size. Multiple chopping is employed to further reduce the residual output ripple due to the RRL offsets. A...