Research of a Mixed-Signal Programmable SoC Based on FPAA

Abstract

This paper presents a novel architecture for mixed-signal SoC, which integrates a Field Programmable Analog Array (FPAA) into a SoC based on 32-bit RISC CPU. The FPAA unit can be configured as Filter, Comparator, Gain Amplifier, and so on. The proposed mixed-signal SoC can transform the intermediate frequency (IF) analog signal to baseband digital signal and realize the real-time baseband signal processing, besides this, which can transmit the modulated IF signals which are converted from baseband signals by digital up-conversion (DUC). The proposed mixed-signal SoC is a transceiver on chip actually, due to the internal integrated IPs, such as ADC, DAC, DDC and DUC, which can provide smaller board area, lower power consumption and the system cost for the product development of transceiver. This design will have a good potential for wireless communication applications.

Design and implementation of a reconfigurable mixed-signal SoC based on field programmable analog arrays

“…The biggest characteristic of FPAA different from other analog circuits is the dynamic reconfiguration by user configuring digital control signals via switched and un-switched capacitors [4] . Just like the way to design the digital circuits by using field programmable gate array (FPGA), the FPAA devices and corresponding development tools and software are facilitative and efficient to complete the analog circuits design, modification and verification [5][6][7] . The mainstream of present data processing method is digital signal processing, along with realizations in a microprocessor.…”