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Video Line Driver

circuit schematic

LT1206 is suitable for driving multiple video cables since it has 60MHz bandwidth, 250mA output current capability, and low output impedance. Please keep in mind about unterminated line effect when driving multiple cables. A reflected wave would propagate back to the driver an cause a crosstalk to other lines since the driver output is non [...]



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Split-Phase Data Synchronization and Decoding

circuit schematic

A split-phase data signal consists of a series of binary digits that occur at a periodic rate, as shown in waveform A in the timing chart. The weight of each bit, 0 or 1, is random, but the duration of each bit and, therefore, the periodic bit rate, essentially is constant.
A clock that is synchronized [...]



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Accelerometer Amplifier

circuit schematic

Precision accelerometers needs inverting mode amplifier since they are usually charge-output  devices. This amplifier convert charges into voltage output. The circuit below is an example of accelerometer with DC servo.

The charge from the transducer is converted to a voltage by C1, which should equal the transducer capacitance plus the input capacitance of the op amp. [...]



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Broadband Random Noise Generator

circuit schematic

Random noise source is often needed in testing many type of electronic systems such as filter, audio, or RF communication. The circuit presented here generates an RMS amplitude regulated noise source with selectable bandwidth.  With 1 KHz to 5 MHz decade ranges selectable   bandwidth and 300mV RMS output, this noise generator is suitable for wide [...]



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Fast Peak Detector

circuit schematic

Fast peak detector requires special amplifier features. The output stage must have high slew rate to keep up with the intermediate stages of the amplifier. This condition causes either a long overload or DC accuracy errors. The amplifier must deliver large currents into the capacitive load of the detector to maintain a high slew rate [...]



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Video Limiter

circuit schematic

To avoid exceeding luminance reference level standard or to avoid exceeding the input range of digitizer (ADC), video signal is often needed to be limited. The simple way to do this is by hard limiting the signal in the positive direction (white peak clipping), but this method completely destroy all information contained in the clipped [...]



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