| 摘要 |
<p>An apparatus with a logarithmic detector performs the following operations: receiving an input voltage (10), generating a series of subsequently amplified versions (12, 14..20) of the input voltage, rectifying the versions (22, 24...30), thereupon rescaling and converting the versions into currents (32,34...,40), summing the currents and applying the summed current to a resistor (58). With regard to the prior art the order of rectification and rescaling has been interchanged. As a result, the design is simplified, the circuit's supply voltage is lower than that of the prior art, and the circuit is more accurate and easier to compensate for temperature dependence. <IMAGE></p> |
