CIRCUIT FOR PROVIDING INTERFACE BETWEEN DIGITAL AND ANALOG CIRCUITS Russian patent published in 2008 - IPC H04B1/02 H03M1/66 H03C1/36 H04L27/36 

FIELD: electronics.

SUBSTANCE: the circuit generates interfacing signal between first and second integration circuits. Circuit contains supporting signal circuit (622), which outputs supporting signal, interfacing circuit (600) and analog signal transmission circuit (626). Interfacing circuit is realized on first integration circuit (600), during operation it connects to supporting signal circuit (622), receives supporting signal and input data signal and generates interfacing signal. Analog signal transmission circuit (626) is realized on second integration circuit, during operation it connects to control circuit (614), receives interfacing signal and outputs output signal. Supporting signal may represent a voltage or current signal and may be generated on first or second integration circuit. Interfacing circuit may be realized containing current mirror, connected to an array of switches, and may operate in re-digitization mode to simplify filtration requirements. Interfacing signal may represent a differential current signal, having resolution of several (for example, four, eight or more) bits. Analog signal transmission circuit (626) may represent, for example, distributed amplification amplifier, modulator or a different circuit.

EFFECT: improved interfacing between integration circuits with usage of lesser amount of signal lines, generating increased noise.

9 cl, 6 dwg