Telecommunications – Receiver or analog modulated signal frequency converter – With wave collector
Reexamination Certificate
2006-09-26
2006-09-26
Vo, Nguyen T. (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
With wave collector
C455S127500, C333S124000
Reexamination Certificate
active
07113759
ABSTRACT:
A controller area network transceiver and a transmission method for a controller area network provides improved symmetry between its differential output signal CANH and CANL such that capacitive imbalance is minimized. The transceiver disclosed herein includes a driver including a non-inverted output that couples to the first output terminal CANH and a inverted output that couples to the second output terminal CANL. A receiver comparator includes a non-inverted input coupled to the first output terminal CANH and a inverted input coupled to the second output terminal CANL. A first and second impedance matching circuit portions capacitively balance the first and second output terminals such that efficient common-mode rejection is enabled by setting the RC time constants formed by each impedance matching circuit and external resistances to be substantially equivalent. This transceiver provides a high performance, simple, and cost effective design which eliminates capacitive imbalance while decreasing required die area.
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Antonsen Anton M.
Jordanger Ricky D.
Brady III W. James
Le Nhan T.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
Vo Nguyen T.
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