LARGE CAPACITY MEMORY CIRCUIT

摘要

PURPOSE:To reduce the number of steps of sampling and holding circuits and to reduce circuit size, power consumption and random noise by dividing n small capacity memories into two groups and executing writing and reading alternately. CONSTITUTION:Inputs of holding circuits 1-1-1-n in a serial/parallel conversion part are connected to an analog signal input terminal 3 through sampling circuits 2-1-2-n and the outputs of respective holding circuits 1-1-1-n are inputted to parallel memory circuits 9-1-9-n through switches 6-1-6-n. Respective sampling circuits 2-1-2-n supply an input signal to the holding circuits 1-1-1-n by sampling pulses phi1S-phinS on the basis of sampling signals 5-1-5-n from a control circuit 4. The parallel memory part is divided into two small capacity memory groups 9-1-9-l and 9-(l+1)-9-n and writing and reading in/from these memories are controlled so as not to be superposed each other.