| 摘要 |
A buffer input circuit, such as for use with a TTL level input, includes an additional or dummy input buffer stage in which the MOS devices are scaled and configured as in a real input buffer stage. The current produced in the dummy input buffer stage for an input voltage at a preset minimum high level is sensed and converted to a compensation voltage, which is applied to the real buffer stages, thereby to modify the current in the real buffer stages to a desired minimum level.
|
