| 摘要 |
<p>A multi-stage current feedback amplifier having a first stage and a second stage. The multi-stage amplifier comprises a transistor device (Q4') having a base, an emitter, and a collector, as well as a replicating device (Q5') having a base, an emitter, and a collector. The base of the replicating device (Q5') is coupled to the base of the transistor device, wherein a voltage in the emitter of the transistor device (Q4') is substantially replicated in the emitter of the replicating device (Q5'). Further, the inventive multi-stage feedback amplifier comprises a current mirror circuit (Q7' and Q8') having a current mirror circuit input and a current mirror circuit output, which current mirror circuit (Q7' and Q8') input is coupled to the collector of the replicating device (Q5'). The current mirror circuit output is coupled to the collector of the transistor device (Q4').</p> |
