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Wide dynamic range Avalanche photodiode Logarithmic scale analog-to-digital converter for current compression and decompression
Wide dynamic range Avalanche photodiode Logarithmic scale analog-to-digital converter for current compression and decompression
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机译:宽动态范围雪崩光电二极管对数模量模数转换为电流压缩和解压缩
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摘要
An electronic circuit comprises an analog-to-digital converter (ADC) circuit. The ADC circuit includes a pre-amplifying transistor and a quantizer circuit. The pre-amplifying transistor includes a base, an emitter and a collector. The pre-amplifying transistor is configured to receive an input voltage at the base that varies logarithmically; and produce an output voltage at the collector according to a comparison of a reference voltage and a difference between the input voltage and a voltage at the emitter. The quantizer circuit is operatively coupled to the pre-amplifying transistor and is configured to generate a digital value for the input voltage using the output voltage produced by the pre-amplifying transistor.
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