H - Electricity – 03 – F
Patent
H - Electricity
03
F
330/20
H03F 3/45 (2006.01) H03F 1/08 (2006.01) H03F 1/48 (2006.01)
Patent
CA 1180773
ABSTRACT A differential amplifier includes a differential amplifier portion having a first NMOS FET having a gate electrode connected to a first input terminal, a drain electrode providing a first output of said differential amplifier portion and a source electrode. Also included is a second NMOS FET having a gate electrode connected to a second input terminal, a drain electrode connected to an output terminal for providing a second output of the differential amplifier portion and a source electrode connected to the source electrode of the first NMOS FET. A first load is connected to the drain electrode of the first NMOS FET and a second load is connected to the drain electrode of the second NMOS FET. The differential amplifier includes a differential to single- ended converter portion including a third NMOS FET having drain and gate electrodes for receiving the first output and a source electrode which is grounded. Also included in the differential to single-ended converter portion is a fourth NMOS FET having a drain electrode for receiving the second output, a gate electrode connected to the gate electrode of the third NMOS FET and a source electrode which is grounded. The first and second outputs are converted into one output to be taken out from the output terminal. The device operates over a significantly broader frequency band than similar prior art devices.
401606
Nippon Electric Co. Ltd.
Smart & Biggar
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