Amplifiers – With semiconductor amplifying device – Including gain control means
Patent
1983-06-14
1985-08-13
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including gain control means
307353, 330 51, 367 67, H03G 310
Patent
active
045352992
ABSTRACT:
A compound floating point amplifier for amplifying an analog signal for presentation to an analog-to-digital converter has two amplifying sections to achieve a wide dynamic range. A signal representative of the rate of change (slew) is derived from a differentiating circuit. The analog signal and the slew rate signal are combined and if both are below a predetermined threshold level, a single step amplification is made in a dual gain amplifier. If both signals are not below the threshold, then there is unity gain through the dual gain amplifier. A sample and hold circuit receives the output of the dual gain amplifier and stores it. Subsequently, the stored voltage is impressed on a binary ladder attenuator which provides a digital word output indicating the required amplification. The voltage stored in the sample and hold circuit is also impressed on a binary gain amplifier system and amplified in accordance with the digital word from the binary ladder attenuator. The dual gain amplifier provides an input to an adder, indicating the amount of the step amplification which is added to the digital word from the binary ladder attenuator to provide a digital word indicative of the overall gain of the compound floating point amplifier.
REFERENCES:
patent: 3525948 (1970-08-01), Sherer et al.
patent: 3875516 (1975-04-01), Thomas
patent: 4282515 (1981-08-01), Patterson, III
Harris Ralph A.
Streckmann George L.
Devine Thomas G.
Heiting Leo N.
Mottola Steven J.
Mullins James B.
Sharp Melvin
LandOfFree
Compound floating point amplifier does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Compound floating point amplifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compound floating point amplifier will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2321067