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5 - Design Summary of Hardware and Software 5.1 Overview 2012
5 - Design Summary of Hardware and Software 5.1 Overview 2012

... prevent breaking in and entering. In this case most, if not all, doors and windows are fitted with sensors to detect if an entry is being accessed or not. Security systems can range from somewhat complex systems to simple systems. Most simple systems include an alarm system, a smoke detection system ...
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... rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. ...
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HMC290 数据资料DataSheet下载

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ADG719 数据手册DataSheet下载

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AD2S83: 数据手册DataSheet 下载

... ratio of the input signals. Consequently there is no need for accurate, stable oscillator to produce the reference signal. The inclusion of the phase sensitive detector in the conversion loop ensures high immunity to signals that are not phase or frequency coherent or are in quadrature with the refe ...
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... A 7-segment display is an assembly of light emitting diode-bars (segments). Each bar can be powered individually. They are arranged and labeled as shown in the diagram below. When all the segments are powered on, the display shows the number 8. Powering up segments a, b, c, d, and g will display the ...
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... dissipate the energy present in electrostatic (ESD) and electrical fast transients (EFT) discharges. A simplified schematic of the protection structure is shown in Figure 8 and Figure 9. Each input and output contains two back-to-back high speed clamping diodes. During normal operation with maximum ...
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... differential signaling (LVDS) to achieve signaling rates as high as 500 Mbps (per TIA/EIA-644 definition). These circuits are similar to TIA/EIA-644 standard compliant devices (SN65LVDS) counterparts, except that the output current of the drivers is doubled. This modification provides a minimum diff ...
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... The NTMB is a tone control preamp with fully independent Bass, Mid and Treble controls with very low noise and wide boost/cut range. It consists of 2 prewired modules for ease of installation. The main module (NTMB) is 2/3 the size of a 9 volt battery. The second module (NTMB3F) is 1/2 the size of t ...
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AVR182: Zero Cross Detector
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... where the zero crossing happens. By using this signal the AVR can be programmed to be a very accurate zero cross detector with a very small and interrupt-driven code. The square wave is the mains signal with its tops cut off and will have the same voltage from VCC - 0.5V to VCC + 0.5V as the mains s ...
LT1794 - Dual 500mA, 200MHz xDSL Line Driver Amplifier
LT1794 - Dual 500mA, 200MHz xDSL Line Driver Amplifier

... has been optimized to provide sufficient headroom when operating from ±12V power supplies in full-rate ADSL applications. The LT1794 also allows for an adjustment of the operating current to minimize power consumption. In addition, the LT1794 is available in small footprint surface mount packages to ...
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Heterodyne



Heterodyning is a radio signal processing technique invented in 1901 by Canadian inventor-engineer Reginald Fessenden, in which new frequencies are created by combining or mixing two frequencies. Heterodyning is used to shift one frequency range into another, new one, and is also involved in the processes of modulation and demodulation. The two frequencies are combined in a nonlinear signal-processing device such as a vacuum tube, transistor, or diode, usually called a mixer. In the most common application, two signals at frequencies f1 and f2 are mixed, creating two new signals, one at the sum f1 + f2 of the two frequencies, and the other at the difference f1 − f2. These new frequencies are called heterodynes. Typically only one of the new frequencies is desired, and the other signal is filtered out of the output of the mixer. Heterodynes are related to the phenomenon of ""beats"" in acoustics.A major application of the heterodyne process is in the superheterodyne radio receiver circuit, which is used in virtually all modern radio receivers.
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