A B S T R A C T A high speed bandpass continuous-time biquad filter is implemented in a 0.8l_tm BiCMOS technology. It demonstrates a wide range of frequency tunability from 25MHz-1lOMHz. The filter intermodulation distortion stays below-52dB at 5OMHz with 1OOmVP input differential signals. The power consumption (& = 5OMHz) is 90mW with a single 5V supply. 1. INTRODUCTION The transconductor-capa...

We describe a custom-designed bio-amplifier and its use in teaching neurophysiology to undergraduate students. The amplifier has the following features: 1) differential amplification with driven shield inputs, which makes it workable even in electrically unshielded environments, 2) high input impedance to allow recordings of small signals through high signal source impedance, 3) dual fixed freq...

In high speed ADC, speed limiting element is comparator. This paper describes a very high speed and low offset preamplifierlatch comparator. The threshold and width of the new comparator can be reduced to the mV range, the resolution and the dynamic characteristics are good. Based on TSMC 0.18um CMOS process model, simulated results show the comparator can work under ultra high speed clock freq...

A high performance monolithic 4:1 analog multiplexer implemented in an 8 GHz dielectrically isolated complementary bipolar process was designed and simulated. It is useful in many general purpose high-speed applications such as driving an 150 Q cable or an analog to digital (A/D) converter. This switched transconductance amplifier 4:1 video multiplexer has a current mode decoder, a voltage feed...

Simulation of phase sensitive amplifier (PSA) of differential phase shift keying (DPSK) data signal in dual pump is presented. The PSA is designed and simulated using OptiSystem software. A dual pump PSA based on cascaded fiber optic parametric amplifier (FOPA) of 80Gbit/s DPSK data signal is investigated in detail on its gain and noise figure. Results show that PSA has higher gain and lower no...

This paper presents a switched-capacitor (SC) band-pass biquad using a simple quasi-unity gain amplifier. In sub-nanometer CMOS technologies the intrinsic gain of the transistors is low; this increases the difficulty of designing high gain amplifiers. The proposed SC filter is based on the Sallen-Key biquad and it requires only a simple low gain amplifier. A differential filter circuit, includi...

Signal transmission experiments were performed at 170 Gbit/s in an integrated Al(2)O(3):Er(3+) waveguide amplifier to investigate its potential application in high-speed photonic integrated circuits. Net internal gain of up to 11 dB was measured for a continuous-wave 1532 nm signal under 1480 nm pumping, with a threshold pump power of 4 mW. A differential group delay of 2 ps between the TE and ...

This paper deals with the design of low power low noise neural signal amplifier for Epileptic Seizure Prediction. The advent of Micro-electro Arrays has driven the need for implantable electronic circuitry to detect those Extracellular neural signals (ENG). We proposed a preamplifier of fully differential Low Noise Amplifier (LNA) with gm boosting in order to enhance the gain as well as reduce ...