The preamplifier block is crucial in bio-medical signal processing. The power intensive Operational Transconductance Amplifier (OTA) is considered, and the performance of preamplifier is studied. A low noise and low power telescopic OTA is proposed in this work. To reduce the noise contribution in the active load transistors, source degeneration technique is incorporated in the current stealing...

In this paper the development of a capacitive microphone with integrated preamplifier is described. The condenser microphone is made by micromachining of polyimide on silicon, and is compatible with CMOS technology. Therefore, the structure can be realised by post processing on substrates containing integrated circuits, independently of the IC process. Microphones with a required DC bias voltag...

This thesis first discusses the design, fabrication, and test results of UHF preamplifier designed to operate from 400 to 500 MHz. The preamplifier integrates a single-pole double-throw (SPDT) switch, tapped-line interdigital filter, balanced lownoise amplifier, and gain stage in a compact, multilayer package. The switch and amplification stages are realized on one layer, and the stripline filt...

The results of engineering an intelligent preamplifier for high purity germanium gamma-detectors are presented. An is a low-noise, speed resistive feedback charge-sensitive with built-in microcontroller and additional units that enable control detector parameters. It also allows the performance managing internal testing pulser, sensor liquid nitrogen level in Dewar, humidity, pressure temperatu...

This article presents the development of a cost-effective and efficient electronic module for silicon photodetectors (SiPM). The combines essential functionalities, such as high voltage power supply, preamplifier, signal comparator, into compact circuit. A supply with range 30 to 140 V provides stable bias 0.01 accuracy, while preamplifier 40 gain 250 MHz bandwidth enables amplification necessa...

The CARIOCA front-end is an amplifier discriminator chip, using 0.25Pm CMOS technology, developed with a very fast and low noise preamplifier. This prototype was designed to have input impedance below 10:. Measurements showed a peaking time of 14ns and noise of 450e at zero input capacitance, with a noise slope of 37.4 e/pF. The sensitivity of 8mV/fC remains almost unchanged up to a detector ca...

In this paper, we present a CMOS preamplifier for use with magnetoresistive (MR) read elements in disk drives. The performance of the CMOS design is competitive with the more expensive current generation of BiCMOS MR preamplifiers. The measured gain for the preamplifier is 43 dB and the measured 3-dB bandwidth is greater than 273 MHz corresponding to a 455-Mb/s data rate. Likewise, the measured...