| 摘要 |
The voltage regulator device has a wide band amplifier having an input reference voltage, Vref and an input feedback voltage, Vfbk. The device has a source follower coupled to the wide band amplifier, the source follower coupled to an output of the wide band amplifier. The device has a VDD source, a regulator output, and a current source coupled to the source follower and the VDD source. The device has a low frequency path comprising a first transistor. The first transistor has a first gate, a first source, and a first drain. The first source is coupled to the VDD source. The first gate is coupled to a slow node, and the first drain is coupled to the regulator output. The low frequency path comprises a RC network, which has a capacitor, a resistor, and the slow node configured between the resistor and the capacitor. The device has a high frequency path comprising a second transistor. The second transistor has a second gate, a second source, and a second drain. The second source is coupled to the VDD source. The second gate is coupled to a fast node, and the second drain is coupled to the regulator output. |
| 主权项 |
1. A system comprising:
a memory device; a transmitter apparatus coupled to the memory device comprising: an incoming receiver device configured to receive a plurality of data streams, each of the data streams having a first data rate and characterized in a first format, the incoming receiver configured to transfer a second data stream having a second format; a serializer device coupled the incoming receiver device, the serializer device processes the second data stream to output a third data stream in a third format; a line driver comprising a power input, the line driver coupled to the serializer device to output a four data stream in a fourth format. a voltage regulator device coupled to supply power to the power input of the line driver, the voltage regulator device comprising: a wide band amplifier having an input reference voltage, Vref and an input feedback voltage, Vfbk; a source follower coupled to the wide band amplifier, the source follower coupled to an output of the wide band amplifier; a VDD source; a regulator output; a current source coupled to the source follower and the VDD source; a low frequency path comprising a first transistor, the first transistor having a first gate, a first source, and a first drain, the first source coupled to the VDD source, the first gate coupled to a slow node, and the first drain coupled to the regulator output, the low frequency path comprising RC network, the RC network comprising a capacitor, a resistor, and the slow node configured between the resistor and the capacitor; and a high frequency path comprising a second transistor, the second transistor having a second gate, a second source, and a second drain, the second source coupled to the VDD source, the second gate coupled to a fast node, and the second drain coupled to the regulator output. |
