Transceiver for bidirectional link, integrated circuit including the transceiver, and application to communication between units of a system

A transceiver adapted to be connected by a transmission link to a similar second transceiver, said link including at least one transmission line (L, L*), said transceiver including amplification means for producing transmission signals over said link in response to transmission command signals (e, e*) and for producing reception signals (s, s*) in response to transmission signals produced over said link by said second transceiver, wherein said amplification means include, for each transmission line (L, L*), a bi-directional amplifier (1), including:

• a first adaptation impedance means (R) for adaptation to the transmission line and being connected to said transmission line;
• a first generator (G1) having an active and an inactive state and commanded in response to said transmission command signals (e, e*) for supplying current to said first impedance means (R) and said transmission line in parallel;
• and
• detection means (G2, r) operatively connected to said first adaptation impedance means (R) for furnishing a measurement signal (V), which is representative of either a current circulating in the adaptation impedance means (R) when said first generator (G1) is active, or a sum of the current circulating in the adaptation impedance means (R) and a compensation value when said first generator (G1) is not active,
• said compensation value being determined so as to meet a compensation condition according to which said measurement signal (V) depends on the transmission signals produced by the other transceiver.