Amplifier with a strong output current

Details Amplifier with a strong output current Amplifier with a strong output current

2007-01-30

2007-01-30

Young, Wayne (Department: 2627)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

Reexamination Certificate

active

10179356

ABSTRACT:
The present invention relates to an amplifier intended to deliver to a load impedance RL connected between two output terminals of the amplifier an output current Iout which is representative of an input signal (Vin, −Vin) applied to two input terminals of the amplifier, which amplifier includes a first and a second transistor T1and T2connected as a differential pair around the load impedance RL. The amplifier according to the invention further includes a third and a fourth transistor T3and T4which form a differential pair; degenerated by means of a degenerating impedance Req which has a nominal value equal to that of the load impedance RL of the amplifier, which differential pair (T3, T4) is intended to be controlled by means of a control signal (−Vin/2, Vin/2), in anti-phase with the input signal (Vin, −Vin). The invention permits to double the output current Iout of the amplifier without, however, increasing its power consumption.

REFERENCES:
patent: 4626794 (1986-12-01), Sugimoto
patent: RE32749 (1988-09-01), Bohme
patent: 5337010 (1994-08-01), Nishiyama
patent: 5852521 (1998-12-01), Umeyama et al.
patent: 5859674 (1999-01-01), Chevallier
patent: 6064261 (2000-05-01), Stein et al.
“Analysis and Design of Analog Integrated Circuits” Messrs. Gray and Meijer, p. 380 and 426, no date.

Affiliated with

Also associated with

Rating

Amplifier with a strong output current does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Amplifier with a strong output current, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Amplifier with a strong output current will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3757327