Amplifiers – Having light-controlled or activated device
Patent
1995-02-28
1997-07-08
Mullins, James B.
Amplifiers
Having light-controlled or activated device
330110, 330308, 250214A, H03F 134, H03F 308
Patent
active
056465734
ABSTRACT:
Automatic Gain Transimpedance Amplifiers for analog applications having high bandwidth, wide dynamic range, and ultra-high linearity. The transimpedance amplifiers includes an operational amplifier and a variable feedback resistance means connected between the input and the output of the amplifier. The variable feedback resistance means may include a single feedback PIN diode, two serially connected feedback PIN didoes, a PIN diode connected to a feedback resistor in parallel, or two serially connected PIN diodes connected to a feedback resistor in parallel. Ultra-high linearity is achieved because the dynamic resistance of the PIN diode under forward bias is substantially linearly dependent on the inverse of the current that passes the diode.
REFERENCES:
patent: 4218613 (1980-08-01), Beltz
patent: 4439741 (1984-03-01), Turner, Jr.
patent: 4620321 (1986-10-01), Chown
patent: 4679251 (1987-07-01), Chown
patent: 5030925 (1991-07-01), Taylor
patent: 5363064 (1994-11-01), Mikamura
patent: 5371477 (1994-12-01), Ikeda et al.
Methley, S.G., "-70dBm APD Optical Feedback Receiver at 2.048mbit/s" Electronic letters, 24:20, pp. 1259-1260, 1988.
Haas, et al., "Low Noise Optical Receiver", IBM Technical Disclosure Bulletin, 23:8, pp. 38-45, 1981.
Bayruns Robert J.
Laverick Timothy M.
Anadigics Inc.
Mullins James B.
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