The AD8367ARUZ is a 45dB high performance Variable Gain Amplifier with linear-in-dB gain control for use from low frequencies up to several hundred megahertz. The range, flatness and accuracy of the gain response are achieved using Analog Devices' X-AMP? architecture, the most recent in a series of powerful proprietary concepts for variable gain applications, which far surpasses what can be achieved using competing techniques. The input is applied to a 9-stage, 200R resistive ladder network. Each stage has 5dB of loss, giving a total attenuation of 45dB. At maximum gain, the first tap is selected, at progressively lower gains, the tap moves smoothly and continuously toward higher attenuation values. The attenuator is followed by a 42.5dB fixed gain feedback amplifier-essentially an op-amp with a gain bandwidth product of 100GHz and is very linear, even at high frequencies.
- Gain up and gain down modes
- Resistive ground referenced input
- Linear-in-dB, scaled 20mV/dB
- 200R Nominal ZIN
信号处理, 工业
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