DOUBLE SAMPLE TYPE SIGMADELTA MODULATOR FOR SECONDARY ORDER HAVING SEMI-DOUBLE PRIMARY ARCHITECTURE

摘要

PROBLEM TO BE SOLVED: To provide an improved secondary order double sample type analog/ digital (A/D) ΣΔ converter. ;SOLUTION: This secondary order double sample type A/D ΣΔ converter uses two pieces of cascade, connected to completely differential switched capacitor integrators. The first integrator has a completely floating double sample type semi-double switched capacitor input component, and the second integrator has a double sample type primary switched capacitor input component on the other hand, with superior SNR, capable of decreasing the number of switches and lowering the power consumption.;COPYRIGHT: (C)1999,JPO