Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Current driver
Reexamination Certificate
2009-03-06
2011-10-18
Lam, Tuan T (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Current driver
C327S112000
Reexamination Certificate
active
08040160
ABSTRACT:
A driver arrangement comprises a charge pump based oscillator (OSC) having a first charging element (CE1) with a first capacitance (C1) for generating an oscillator signal depending on a first capacitance (C1) and on a first charging current (I1). A controllable current source (CCS) is configured to generated a first and a second charging current (I1, I2) depending on a current control signal, wherein first and second charging currents (I1, I2) have a first predetermined scaling ratio (α). The current control signal is provided by a control unit (CTL). An output circuit (DRV) of the driver arrangement comprises a second charging element (CE2) having a second capacitance (C2). The output circuit (DRV) is configured to generate an output signal depending on a data signal (TXD), on the second charging current (I2) and on the second capacitance (C2). Herein, the second capacitance (C2) has a second predetermined scaling ratio (β) with respect to the first capacitance (C1).
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austriamicrosystems AG
Cozen O'Connor
Lam Tuan T
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