Bionic implants for the deaf require wide-dynamicrange low-power microphone preamplifiers with good wide-band rejection of the supply noise. Widely used low-cost implementations of such preamplifiers typically use the buffered voltage output of an electret capacitor with a built-in JFET source follower. We describe a design in which the JFET microphone buffer’s output current, rather than its o...

This paper presents a pre-amplifier latch based CMOS comparator design. This design is premeditated to be used as a comparator window. This design is attractive due to its low power dissipation and speed. Preamplifier implies a cascode structure which stabilizes the output voltage and latch with its regenerative feedback which makes comparison fast along with detection of small difference betwe...

All the preamplifiers dedicated for Quartz Enhanced PhotoAcoustic Spectroscopy (QEPAS) applications that have so far been reported in the literature have been based on operational amplifiers working in transimpedance configurations. Taking into consideration that QEPAS sensors are based on quartz tuning forks, and that quartz has a relatively high voltage constant and relatively low charge cons...

The strategy used to develop the NIF Integrated Computer Control System (ICCS) calls for incremental cycles of construction and formal test to deliver a total of 1 million lines of code. Each incremental release takes four to six months to implement specific functionality and culminates when offline tests conducted in the ICCS Integration and Test Facility verify functional, performance, and in...

In the control system of a quantum gravimeter, optical signal containing phase information is weak and usually at nV level. This situation puts forward high requirements for measurement performance system. As coupling input component system, noise level preamplifier has dramatic influence on performance. this paper, current provided by photodiode. According to photodiode output characteristics,...

A 1.2V 6mW 500MS/s 5-bit ADC for use in a UWB receiver has been fabricated in a pure digital 65nm CMOS technology. The ADC uses a 6-channel time-interleaved successive approximation register architecture. Each of the channels has a split capacitor array to reduce switching energy and sensitivity to digital timing skew. A variable delay line is used to optimize the instant of latch strobing to r...

A very Jow noise measurement system is described with a noise temperature of 0.5 K consisting of a mercury wetted reed switch, low noise preamplifier, and synchronous detector. The set-up can te tuned from 20 kHz up to 3.15 GHz corresponding to the bandwidth of relay and prcamplifieI'. The shot noise of CdSjCulnSe2-photodiode,s has been investigated. Deviations from the expected behaviour indic...

A low noise, low power, radiation hard, full custom integrated circuit has been studied for coupling with photodetectors of the CMS electromagnetic calorimeter. A new version of the prototype preamplifier has been designed with improved performances (noise, dynamic range, consumption). Irradiation tests on this monolithic circuit have been performed at CERN with a Xray SEIFERT RP149 generator u...

A fully differential transimpedance amplifier has been designed and implemented in 0.18 μm standard digital CMOS technology. The parallel feedback circuit topology is adopted to broaden the bandwidth. It can operate at 10 Gb/s with the dynamic range from 25 μA up to 2.5 mA. The power consumption is only 88 mW under 2 V supply voltage.