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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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CLC5523IM Fiches technique(PDF) 1 Page - National Semiconductor (TI) |
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CLC5523IM Fiches technique(HTML) 1 Page - National Semiconductor (TI) |
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1 / 12 page  Typical Application Variable Gain Amplifier Circuit CLC5523 Low-Power, Variable Gain Amplifier March 2000 Features s Low power: 135mW s 250MHz, -3dB bandwidth s Slew rate 1800V/ ms s Gain flatness 0.2dB @ 75MHz s Rise & fall times 2.0ns s Low input voltage noise 4nV/ ÖHz Applications s Automatic gain control s Voltage controlled filters s Automatic signal leveling for A/D s Amplitude modulation s Variable gain transimpedance General Descriptions The CLC5523 is a low power, wideband, DC-coupled, voltage- controlled gain amplifier. It provides a voltage-controlled gain block coupled with a current feedback output amplifier. High impedance inputs and minimum dependence of bandwidth on gain make the CLC5523 easy to use in a wide range of applications. This amplifier is suitable as a continuous gain control element in a variety of electronic systems which benefit from a wide bandwidth of 250MHz and high slew rate of 1800V/ ms, with only 135mW of power dissipation. Input impedances in the megaohm range on both the signal and gain control inputs simplify driving the CLC5523 in any application. The CLC5523 can be configured to use pin 3 as a low impedance input making it an ideal interface for current inputs. By using the CLC5523’s inverting configuration in which RG is driven directly, inputs which exceed the device’s input voltage range may be used. The gain control input (VG), with a 0 to 2V input range, and a linear-in-dB gain control, simplifies the implementation of AGC circuits. The gain control circuit can adjust the gain as fast as 4dB/ns. Maximum gains from 2 to 100 are accurately and simply set by two external resistors while attenuation of up to 80dB from this gain can be achieved. The extremely high slew rate of 1800V/ ms and wide bandwidth provides high speed rise and fall times of 2.0ns, with settling time for a 2 volt step of only 22ns to 0.2%. In time domain applications where linear phase is important with gain adjust, the internal cur- rent mode circuitry maintains low deviation of delay over a wide gain adjust range. Frequency Response with Changes in Vg Frequency (Hz) 30 20 10 0 -10 -20 -30 -40 -50 1M 10M 100M © 2000 National Semiconductor Corporation http://www.national.com Printed in the U.S.A. + - CLC5523 Rf Vo Vin Rg 2 3 4 1 VG RL 5 -5V 8 +5V 6 7 25 W VG VIN Rg GND I- VO -VCC +VCC X1 Pinout DIP & SOIC |
Numéro de pièce similaire - CLC5523IM |
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Description similaire - CLC5523IM |
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