Patent ID: 6130569
Filing Date: 2000-10-10
Classification: H03K

Abstract:
A driver circuit having a controlled transition rate, the driver circuit comprising:a first device operable to switch a supply voltage to load;a second device coupled to an input of the first device in source follower arrangement;a third device coupled to the input of the first device and an output of the second device, the third device operable to function as a first Miller amplifier in conjunction with the first device;a fourth device coupled to an input of the second device, the fourth device operable to function as a second Miller amplifier in conjunction with the first device and the second device;a capacitor coupled between an output of the first device and inputs of the third and fourth devices, the capacitor operable to function as a Miller capacitor to control transition rates at the output of the first device;a first current source having a first value;a first switch operable to connect the first current source to the inputs of the third and fourth devices;a second current source having a second value; anda second switch operable to connect the second current source to the inputs of the third and fourth devices.