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Compact low-power receiver including transimpedance amplifier, digitally controlled interface circuit, and low pass filter
Compact low-power receiver including transimpedance amplifier, digitally controlled interface circuit, and low pass filter
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机译:紧凑型低功耗接收器,包括互阻放大器,数控接口电路和低通滤波器
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摘要
According to one embodiment, a compact low-power receiver comprises first and second analog circuits connected by a digitally controlled interface circuit. The first analog circuit has a first direct-current (DC) offset and a first common mode voltage at an output, and the second analog circuit has a second DC offset and a second common mode voltage at an input. The digitally controlled interface circuit connects the output to the input, and is configured to match the first and second DC offsets and to match the first and second common mode voltages. In one embodiment, the first analog circuit is a variable gain control transimpedance amplifier (TIA) implemented using a current mode buffer, the second analog circuit is a second-order adjustable low-pass filter, whereby a three-pole adjustable low-pass filter in the compact low-power receiver is effectively produced.
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