b***n
发帖数: 13455 | 1 ☆─────────────────────────────────────☆
chenxiaoer (chenxiaoer) 于 (Wed Feb 14 14:39:24 2007) 提到:
This is a variable-gain amplifier. Assume M1-M2 are same size, and M3-M6 are
same size. Ignore the channel length modulation, can you
1) explain the principle of this circuit for varying the gain?
2) calculate the gain in terms of gm1-gm6?
☆─────────────────────────────────────☆
chenxiaoer (chenxiaoer) 于 (Wed Feb 14 14:40:49 2007) 提到:
sorry I don't know how to post a jpeg file here, but I t |
|
