Single-to-differential converter

Details Single-to-differential converter Single-to-differential converter

1993-12-09

1995-04-04

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

330301, 327 52, 327171, H03K 17693, H03K 1762, H03F 316

Patent

active

054040507

ABSTRACT:
A single-to-differential converter for generating two balanced output signals from one single-ended input signal includes first (3) and second (6) output terminals for providing the balanced output signal, a first transistor (M1) having a control electrode coupled to an input terminal (4) for receiving the input signal, a first main electrode coupled to a supply voltage terminal (1) for receiving a supply voltage and a second main electrode coupled to the first output terminal (3). A second transistor (M2) is provided having a control electrode coupled to a bias voltage terminal (5), a first main electrode coupled to the control electrode of the first transistor (M1) and a second main electrode connected to the second output terminal (6). A diode-connected third transistor (M3) is provided having its main current path coupled to the first output terminal (3), and a diode-connected fourth transistor (M4) is provided having its main current path connected to the second output terminal (6). The resulting single-to-differential converter provides low distortion and good balance at high frequencies.

REFERENCES:
patent: 4109214 (1978-08-01), Main
patent: 4296383 (1981-10-01), Jeandot et al.
patent: 4728900 (1988-03-01), Nakagawara et al.
patent: 4845675 (1989-07-01), Krenik et al.
patent: 5283484 (1994-02-01), Brehmer et al.

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