Self-biased cascode current mirror having high voltage swing and

Details Self-biased cascode current mirror having high voltage swing and Self-biased cascode current mirror having high voltage swing and

1993-09-10

1994-10-25

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including current mirror amplifier

330296, H03F 316

Patent

active

053592964

ABSTRACT:
A self-biased cascode current mirror includes a current mirror (60), and a cascode bias generator (50). The cascode bias generator (50) includes a resistor (51) to provide a bias voltage for the current mirror (60). The current mirror (60) includes cascode transistor (64) and two mirror transistors (62, 63). The bias voltage is approximately equal to a minimum saturation voltage of the cascode transistor (64) plus a gate-source voltage of the transistor (63) of the current mirror (60). The self-biased cascode current mirror (60) has a high output impedance and high voltage swing while providing low power consumption and requiring a small layout area.

REFERENCES:
patent: 5087891 (1992-02-01), Cytera
patent: 5099205 (1992-03-01), Lewyn
patent: 5134310 (1992-07-01), Mobley et al.
patent: 5142696 (1992-08-01), Kosiec et al.

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