Programmable gain amplifiers spiegel

Skip to search form Skip to main content Skip to account menu You are currently offline. Some features of the site may not work correctly. DOI: Spiegel Published Computer Science High-quality neural recording lays the foundation of neuroscience research. The last two decades have witnessed remarkable advances in neural recording front-end design. However, there are two challenges remaining: the increasing bandwidth requirement for modern high-density microelectrode arrays, and the high dynamic range requirement in advanced low voltage and low power systems.

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• Predicting EVM in the RFIC Design Flow
• Frank Ellinger
• High-Fidelity and High-Efficiency Digital Class-D Audio Power Amplifier
• Integrated Circuits and Systems Master’s Degree Program
• Conference Papers
• Systematic design of RSSI and logarithmic amplifiers circuits

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Predicting EVM in the RFIC Design Flow

To browse Academia. Log in with Facebook Log in with Google. Remember me on this computer. Enter the email address you signed up with and we'll email you a reset link. Need an account? Click here to sign up. Download Free PDF. Systematic design of RSSI and logarithmic amplifiers circuits Solon Spiegel. A short summary of this paper. Systematic design of RSSI and logarithmic amplifiers circuits. Melamed, A. Even-Chen and Solon J.

A close optimizes the gain, bandwidth and current consumption expression for the maximum detection error using a piece as function of the common mode voltage. The tail wise linear approximation of the logarithmic function was derived. The design methodology has been proposed that current, device geometries and load resistance of a optimizes the power consumption and 3dB bandwidth of a single stage limiting amplifier are estimated assuming single stage CMOS limiting amplifier according to the constant common mode voltage conditions.

The overall common mode voltages in order to meet the voltage gain RSSI power consumption and bandwidth are and detection error requirements. The results for the determined by scaling the results for n-stages. Excellent RSSI circuit indicate 70dB dynamic range, 3dB agreement between the theoretical model and physical bandwidth of MHz and maximum detection error of implementation has been obtained. The overall power consumption equals to These circuits provide a logarithmic to linear conversion which in terms of electrical quantities is translated to an output current or voltage information proportional to the input power level defined in dBm.

Figure 1 shows a typical block Figure 1 Example of a simplified block diagram of a receiver chain diagram of the receiver unit with the RSSI circuit. The and the RSSI circuit. RSSI circuit dynamic range, bandwidth and detection error depend on the specific system requirement. The mathematical treatment of a piece wise II. To between the input signal level and the output voltage as determine the number of amplification stages and the well as the maximum deviation from an ideal associated detection error, the logarithmic function was logarithmic function are described.

The single stage decomposed into n-linear segments, meeting the limiting amplifier with gain equals to A can be specified detection error. The cord represents small enough that all the limiting stages operate in the the linear piecewise approximation of the logarithmic linear mode, the output signal can be expressed as amplifier circuit. Using 8 and 9 , the slope of the cord N N of Fig. Substituting the above actual input value in dB scale.

From the requirements, determine the maximum error III. Single stage gain vs. Maximum error vs. Bandwidth in log scale vs. The requirements of the systems. The linear are illustrated in Figures 6 and 7 respectively. The results demonstrates 10 a very close agreement with the theoretical values described in For 70dB dynamic range, the 8 detection error is approximately 0.

Noise figure vs. Detection error vs. Input voltage in dBv 10 0 The complete circuit consumes Device width um Figure 7. Power consumption vs. Tsukahara and M. Solid-State Circuit Conference, Huang, Y. Chen, and C. Tao et al. Input voltage dBv [5] C. Holdenried et al. Output voltage vs. IEEE Analysis and design of the true piecewise approximation logarithmic amplifiers By A. Download PDF.

Frank Ellinger

Reliable, multi-channel neural recording is critical to the neuroscience research and clinical treatment. However, most hardware development of fully integrated, multi-channel wireless neural recorders to-date, is still in the proof-of-concept stage. To be ready for practical use, the trade-offs between performance, power consumption, device size, robustness, and compatibility need to be carefully taken into account. This paper presents an optimized wireless compressed sensing neural signal recording system. The system takes advantages of both custom integrated circuits and universal compatible wireless solutions. The proposed system includes an implantable wireless system-on-chip SoC and an external wireless relay.

High-Fidelity and High-Efficiency Digital Class-D Audio Power Amplifier

Effective date : Kind code of ref document : A2. Extension state : BA ME. The invention relates to a sensor for optically detecting marks on a moving material web. The object of the invention is to produce a sensor which can be reliably used for all possible combinations of printing inks and backgrounds, without compromising the achievable accuracy. To achieve this the sensor comprises: a light source for generating a light spot on the moving material web, the intensity of the light spot being controllable by means of a driver; a light receiver for receiving the light reflected back by the light spot; a signal processing unit for evaluating the output signal of the light receiver; and a switching unit for switching between a teach mode, in which the intensity of the light spot is changed by the driver and a detection mode, in which the intensity of the light spot is maintained at a constant level by the driver. Sensor zur optischen Erfassung von Markierungen auf einer laufenden Sensor for the optical detection of markings on a running. Materialbahn web.

Integrated Circuits and Systems Master’s Degree Program

Amplifiers and Comparators Minimize menu. Please log in to show your saved searches. ST's operational amplifier portfolio provides a unique choice of high performance, low power, precision op amps and tiny packages. It addresses voltages from 1.

Conference Papers

Toggle navigation. Dijkstra number of four. Christian D. Scenario-based analysis of the carbon mitigation potential of 6G-enabled 3D videoconferencing in Paolo Valerio Testa.

Systematic design of RSSI and logarithmic amplifiers circuits

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Solon Spiegel has filed for patents to protect the following inventions. Analog base band unit for a RF receiver and method for using the same. Patent number:

Twee Vlaamse bedrijven hebben samen met Imec een badkamerspiegel ontwikkeld die zowel de voor- als achterkant van een persoon kan weergeven. Dit Me2-systeem is verwerkt in een badkamermeubel met twee deuren waar de gebruiker tussen kan gaan staan. Group De Keyzer, een keuken- en badmeubelfabrikant en Deknudt Mirrors, ontwikkelaar van spiegels voor b2b-toepassingen, riepen de hulp van Imecs innovatiedienst in om te helpen met de elektronica. Onder meer de zeer hoge luchtvochtigheid in badkamers, de wisselende belichting in de kosten waren daarbij belangrijke uitdagingen.

A CMOS high frequency variable gain amplifier with maximum high frequency operation and wide variable gain characteristics that is formed from an amplifier having a plurality of variable gain amplifier cells connected in series for continuously enabling wide gain variation; and a control voltage generator for generating and outputting the control voltage of the variable gain amplifier cells. By using both the saturation region and the linear region of input differential transistors constituting the variable gain amplifier cells in order to obtain wide ga By using both the saturation region and the linear region of input differential transistors constituting the variable gain amplifier cells in order to obtain wide gain variation characteristics, it is possible for the variable gain amplifier to operate in the saturation region when the input signal is small to obtain a high gain and to operate in the linear region when the input signal is large to obtain minimum distortion and a low gain. Also, it is possible for the gain to have the characteristics in the form of an exponential function to the gain control voltage. A CMOS variable gain amplifier comprising:an amplifier having a plurality of variable gain amplifier cells with substantially the same gains connected in series to continuously have a broad gain variation; anda control voltage generator for generating a control voltage of the variable gain amplifier cells to vary a gain of the amplifier by an external control voltage which is regulated according to input voltages and outputting the control voltage, wherein the control voltage generator comprises:an exponential function volta ScienceON Chatbot. CMOS variable gain amplifier and control method therefor.

Spiegel, Philadelphia, Pa. In the development of guided missiles and pilotless aircraft, guidance receivers are often used to receive signals which actuate automatic devices which in turn control various functions associated with a guided missile or aircraft. Such automatic devices generally include relays Which become operative when carrier signals of predetermined amplitudes are applied to the receiver.