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US 2006/0039504 A1Published application
Receiver for a switched signal on a communication line
AssigneeFreescale Semiconductor, Inc.
InventorThierry Sicard
Life of this patent
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AssigneeFreescale Semiconductor, Inc.
InventorThierry Sicard
Estimating the term…
A receiver for receiving a switched signal on a communication line (1), such as a LIN bus, the signal varying between first and second voltage levels (sup, ground). The receiver comprises a comparator (31,54) responsive to the relative values of the received signal voltage level (Vlin) and an input reference voltage level (Vsup). The comparator (31, 54) comprises a current generator (40,41) selectively operatble when the recieved signal is asserted to produce an input current (Iin) which is a function of the received signal voltage level (Vlin) and a reference current (Isup) which is a function of the input reference voltage level (Vsup), and output means (28, 32, 31; 55, 56) responsive to the relative values of the input current (Iin) and the reference current (Isup). The output means (28, 32, 31; 56) is supplied with power at a voltage (VDD) substantially lower than the difference bwtween the first and second voltage levels (Vsup, ground). A switch (26, 35, 46) responsive to the input current (Iin) reduces the power consumption of the comparator when the received signal is de-asserted.
A receiver for receiving a switched signal on a communication line, said signal varying between first and second voltage levels, said receiver comprising comparator means responsive to the relative values of the received signal voltage level and an input reference voltage level, characterised in that said comparator means comprises current generating means selectively operable when said received signal is asserted to produce an input current which is a function of said received signal voltage level and a reference current which is a function of said input reference voltage level, and output means responsive to the relative values of said input current and said reference current, said output means being supplied with power at a voltage substantially lower than the difference between said first and second voltage levels, and said comparator means being responsive to said received signal to reduce its power consumption when said received signal is de-asserted.
Dependencies are inferred from the claim text.