Amplifiers – With semiconductor amplifying device – Including plural stages cascaded
Reexamination Certificate
2007-06-05
2007-06-05
Shingleton, Michael B. (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including plural stages cascaded
C330S311000, C330S294000, C330S260000, C330S253000, C330S277000, C327S560000, C327S562000, C341S144000
Reexamination Certificate
active
11221113
ABSTRACT:
The two output currents (INP, IN) which are produced by a current source digital/analog converter (DAC) are supplied to the two halves of a symmetrical transimpedance amplifier. The input current (INP, IN) is supplied to a first stage, which is formed by a first transistor (N2), and a potential at the output of the first stage is supplied to a second stage, which is formed by a second transistor (N3), and the output voltage (VOUT, VOUTP) is formed by a potential at the output of the second stage. The output of the second stage is coupled to the output of the first stage through a Miller capacitor (Cm). The output of the transimpedance amplifier is coupled to its input by means of a connecting line which contains a feedback resistor (Rf).
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Sedra et al. “Microelectronics Circuits” Oxford Press 2004 p. 849-855.
Tietze, Dr. Ulrich, et al.; Halbleiter-Schaltungstechnik; 11. Aufl., Berlin, Springer, pp. 549-553, 557-558.
Baker & Botts L.L.P.
Infineon - Technologies AG
Shingleton Michael B.
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