Circuit arrangement and method for bidirectional data transmission

A circuit arrangement. comprising:

• a first comparator circuit having a first comparator threshold;
• a second comparator circuit having a second comparator threshold;
• a third comparator circuit having a third comparator threshold;
• a control circuit configured to
• adapt the first comparator threshold such that the first comparator circuit is in a first comparator output state for a first time portion of a predefined time interval,
• adapt the second comparator threshold such that the second comparator circuit is in a first comparator output state for a second time portion of the predefined time interval, wherein the second time portion is longer than the first time portion, and
• set the third comparator threshold to be between the first comparator threshold and the second comparator threshold.

A transformer arrangement for signal transmission, the transformer arrangement comprising:

• at least one transformer comprising a primary coil and a secondary coil;
• the transformer arrangement having a resonance frequency;
• a controller configured to terminate driving the primary coil so that the transformer arrangement is oscillating in the resonance frequency;
• a switching circuit coupled to the secondary coil and configured to, in a first switching state, let the transformer arrangement oscillate, and, in a second switching state, to decrease the oscillation of the transformer arrangement.

A circuit arrangement, comprising:

• a first signal delay circuit comprising a first component being subject to a process variation, wherein the first component has an effect on the signal delay time of the first signal delay circuit;
• a second signal delay circuit comprising a second component being subject to the same process variation, wherein the second component has an effect on the signal delay time of the second signal delay circuit;
• wherein the first signal delay circuit and the second signal delay circuit are configured to receive the same signal to be delayed;
• wherein the second signal delay circuit has a longer signal delay time than the first signal delay circuit;
• wherein a degree of influence of the process variation of the second component on the signal delay time of the second signal delay circuit is smaller than a degree of influence of the process variation of the first component on the signal delay time of the first signal delay circuit.

A pulse generating circuit arrangement, comprising:

• a pulse generating circuit configured to provide a pulse;
• and
• a circuit arrangement, comprising:
• a first signal delay circuit comprising a first component being subject to a process variation, wherein the first component has an effect on the signal delay time of the first signal delay circuit;
• a second signal delay circuit comprising a second component being subject to the same process variation, wherein the second component has an effect on the signal delay time of the second signal delay circuit;
• wherein the first signal delay circuit and the second signal delay circuit are configured to receive the same signal to be delayed;
• wherein the second signal delay circuit has a longer signal delay time than the first signal delay circuit;
• wherein the degree of influence of the process variation of the second component to the signal delay time of the second signal delay circuit is smaller than the degree of influence of the process variation of the first component to the signal delay time of the first signal delay circuit;
• wherein the pulse generating circuit is configured to provide the pulse such that the pulse is started by a signal provided by the first signal delay circuit and such that the pulse is terminated by a signal provided by the second signal delay circuit.

Method for transmitting data in a direction of transmission of a clock signal,

• wherein positive and negative edges of the clock signal are transmitted by pulses with opposite polarity;
• wherein a polarity of the pulses is not inverted when no data is transmitted;
• and
• wherein the polarity of at least one pulse is inverted when data is transmitted.