| 摘要 |
<p>An integrated circuit (100) for squaring an original input signal (VIN) includes a pair of dual-ended difference amplifiers (110, 120) to each of which the input signal is delivered, a pair of dual-to-single-ended converters (130, 140), each receiving the respective dual-ended output of the respective difference amplifier, and a summing network (150) for summing the squares of the outputs of the dual-to-single-ended converters. One of the dual-to-single-ended converters (140) receives the dual-ended output of the corresponding dual-ended amplifier (120) in opposite (cross-coupled) order from that of the other, whereby the output of the summing network is, except for an additive constant, proportional to the square of the original input signal independently of power supply voltage fluctuations within reasonable limits.</p> |
