Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Current driver
Reexamination Certificate
2005-09-27
2005-09-27
Lam, Tuan T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Current driver
C327S109000, C327S112000
Reexamination Certificate
active
06949963
ABSTRACT:
Line driver for a LIN-bus. The line driver has a current source output transistor (T1) for pulling down the LIN-bus wire (LB) to ground (GND). The LIN-bus wire (LB) is connected to a positive supply voltage (VBAT) through a pull-up resistor (R1). The output transistor (T1) is driven by a driver stage (DRV) in response to an input current (J1) at an input node (X). The driver stage has a further resistor (R2) connected between the gate of the output transistor (T1) and a reference terminal (GND), a reference transistor (T2) which has its source connected to the reference terminal (GND) and its drain coupled to the input node (X); the gates of the output transistor (T1) and the reference transistor (T2) are connected to an output (DAO1) of a differential amplifier (DA1) which has an inverting input (DAN1) coupled to a bias voltage source (E2) and a non-inverting input (DAP1) coupled to the input node (X). The further resistor (R2) stage provides a low-impedance path to ground for RF disturbances reaching the gate of the output transistor (T1) through the drain-gate capacitance of the output transistor (T1) and prevents these disturbances from penetrating the driver stage.
REFERENCES:
patent: 5061861 (1991-10-01), Sameshima et al.
patent: 5640357 (1997-06-01), Kakimi
patent: 5739712 (1998-04-01), Fujii
patent: 6215338 (2001-04-01), Gervasi et al.
patent: 6590368 (2003-07-01), Tanaka et al.
patent: 0705008 (1996-04-01), None
Radio Shack Dictionary of Electronics, 1977, 5th Edition, Howard W. Sams &Co., Inc.
Boezen Hendrik
Bollen Gerrit Jan
Boomkamp Aloysius Johannes Maria
De Haas Clemens Gerhardus Johannes
Van Den Heuvel Abraham Klaas
Koninklijke Philips Electronics , N.V.
Lam Tuan T.
Nguyen Hiep
Stroud Adam
LandOfFree
Line driver with current source output and high immunity to... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Line driver with current source output and high immunity to..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Line driver with current source output and high immunity to... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3371598