Integrated circuit

Details Integrated circuit Integrated circuit

2007-09-25

2007-09-25

Liu, Shuwang (Department: 2809)

Electronic digital logic circuitry

Interface

Current driving

C326S062000, C326S063000

Reexamination Certificate

active

11135642

ABSTRACT:
An integrated circuit includes a first and a second amplifier circuit (10, 20), which are in each case driven by an input signal (Vin) having a high and a low signal level and a reference signal (Vref) having a constant signal level and, on the output side (D11, D21) generate a first control signal (S1) and a second control signal (S2). The control signals (S1, S2) are generated independently of one another and are used to regulate a first controllable resistor (31) and a second controllable resistor (32) of a third amplifier circuit (30). Depending on the resistance value of the first and second controllable resistors (31, 32) of the third amplifier circuit, an output signal (Vout) that is amplified in comparison with the input signal (Vin) can be generated at an output terminal (A). The integrated circuit can be used as an input amplifier of an integrated semiconductor memory and permits an adaptive behavior of the input amplifier with regard to fluctuations of the average absolute input signal level.

REFERENCES:
patent: 3377548 (1968-04-01), Newbold
patent: 3530389 (1970-09-01), Hogan et al.
patent: 5214320 (1993-05-01), Truong
patent: 6194920 (2001-02-01), Oguri
patent: 2006/0267681 (2006-11-01), Sommer

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