Engineering Projects

In this article we will discuss about programmable operational amplifier IC, its key parameters, applications, parts number and comments. Programmable Operational Amplifier Description Some general-purpose op amps are available with an external tab that can be connected to a “set” or programmable current. This external terminal can control such important parameters as the power dissipation, bandwidth, slew rate, output current, input impedance, and input noise. While the programming current controls some of these parameters, other parameters will remain fixed. Externally supplied programming current can be in the form of a…

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In this article we will discuss about Isolation amplifier, its key parameters, applications and comments. So let’s start with description. Isolation Amplifier Description: Consisting of several stages of amplification, the input amplifier is either electrically or optically isolated from the output. The input amplifier is usually a differential amplifier, the output of which is RF modulated and then transferred through an RF transformer to the second stage, where it is demodulated and filtered. The DC power supply for the input amplifier section must also be isolated so that there is…

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In this article, we will discuss about Sample and Hold Amplifier IC, its key parameters and its applications. But before that, let us see what a sample and hold circuit is. The principle underlying the digital signal processing is that of sampling the analog signal. Sampling basically means obtaining the discrete time signals from the reduction of the continuous time signals. The Nyquist–Shannon sampling theorem is one of the well-known and commonly used sampling theorem in signal processing. A sample and hold circuit obtains samples of an analog signal and…

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In this article we will see details like key parameters , applications and parts number of Class B, Class C and Class AB amplifier IC. Description of Class B Amplifier: In this type of amplifier, the quiescent (Q) point is set exactly at the cutoff of the IC curve, resulting in amplification of only one half-cycle of the input sinewave. Class B amplifiers are invariably connected back to back in push-pull circuits. In this arrangement one amplifier is operating during the positive cycle of the sinewave and is cut off…

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In this article we all learn about comparator IC, it’s key parameter, applications and comments. So let’s first start with what is comparator IC or it’s description Description of Compartor IC Essentially a very fast-acting high-gain differential amplifier, a comparator senses the difference between two voltages and, by rapid amplification, provides maximum output immediately. De-signed for low-input current, most comparators are essentially voltage devices that interface with digital logic circuits. The various types of comparators differ primarily in the emphasis of some key parameters, such as low power consumption, fast…

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In the Anti-logarithmic Amplifier IC the output voltage is proportional to the log or to the exponential function (antilog) of the input signal. Most logarithmic amplifier ICs are available with an external strapping option that makes them operable in either the algorithmic or the exponential (antilog) mode, as indicator in figure 1. The antilog element consists of semiconductors stage in which the input voltage procedures a current that is an exponential function. To produce a logarithmic output, the antilog element is connected as part of the feedback circuit as shown…

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The demand for high-density, cost-effective printed circuit boards has promoted the electronic industry to seek alternative methods to traditional plated-through-hole technology. One such alternative is surface mounting, a technology traditionally used in hybrid fabrication. The advantage of surface mounting is numerous but the button line is that it is cost effective and will begin to displace plated-through-hole technology as the availability of surface-mount components increases. Texas Instruments is fully supporting the growth of the surface-mount industry with its line of plastic leaded chip carriers. An introduction to the surface-mount components…

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