The Design of Wideband DC Amplifier Based on FPGA

Abstract:

Wideband DC Amplifier plays an important role in scientific research and measuring instruments. This paper presents a wideband amplifier with controllable DC voltage gain with a programmable gain amplifier AD600, 12-Bit Serial D / A chip DAC7611 and FPGA-based IP MCS-51 MC as its core. Test results show that the pass band of the whole system is 0Hz ~ 10MHz, the voltage gain ranges from 0dB to 60dB, the gain step is 1dB, the maximum output voltage sine wave RMS Vo ≥ 10V, and there is no significant distortion in the output signal waveform. The system is not only characterized by its high speed, high efficiency, small size and in-built orientation of peripheral circuits, which are the features of MC constructed with a MC with FPGA, but also has advantages of flexible designing, scalability, extensibility and upgradability. Therefore it has good application prospects and research values.

• Periodical: Applied Mechanics and Materials (Volumes 321-324)
• Pages: 391-396
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.321-324.391
• Online since: June 2013
• Authors: Shou Liang Yang, Dong Zhang
• Keywords: D\A, IP Core-Based MCS, Programmable, Wideband DC Amplifier

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