Double integration, delta-sigma, analog-digital coder

Details Double integration, delta-sigma, analog-digital coder Double integration, delta-sigma, analog-digital coder

1983-09-20

1986-05-13

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

375 33, H04B 1406

Patent

active

045889813

ABSTRACT:
The invention relates to a double integration or dual slope delta-sigma coder.
This coder comprises a first adder receiving on an input (36) a signal E(p) to be encoded and on an input (37) the coded signal S(p), a first integrator receiving on an input (32) an output signal of the first adder, a second adder receiving on an input (38) the output signal (31) of the first integrator, an input (39) of the second adder receiving a signal proportional to the coded signal, a second integrator connected to the second adder, a quantizer circuit (43), whereof one input (D) is connected to an output (41) of the second integrator, an output Q of said quantizer circuit supplying the coded signal S(p), wherein the integrators and adders are constituted by circuits comprising operational amplifiers (30, 40) and switched capacitor arrangements (35, 36, 45, 46).

REFERENCES:
patent: 4301446 (1981-11-01), Petit
patent: 4439756 (1984-03-01), Shenoi

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