The Design And Implementat Of A Low-Power Field-Programmable Analog Filter

The filed programmable analog array is an important direction which analog integrated circuit research realm. This paper designed a filed programmable analog filter on the scene, Be a kind of spot of simplification filed programmable analog array, used for the body sensor network(BSNs) node is a function to the filter of human body physiology signal, Be an automatic spot filed programmable analog array design of first step work. The ASIC have developed consists of a analogue module, a current source, a voltage source, an oscillator, and a double–phase non-overlapping clock source with different clock rates (DCLK). the Configurable Analog Block(CABs) as the core of the circuit according to the classic of switch-capacitor circuit, by setting dissimilar control signals on switches of transresistance and passageway to carry out programmable function. The design of that chip carries on in the Cadence IC5141 EDA terrace, the circuit carried out the function of high-pass, low-pass analog filter and the combination of various of close frequency and benefit. At the same time, by the way of unite much more blocks to achieve the function of high-orders analog filter and band-pass filter that increased the complexity of circuit function further and raised circuit function.The ASIC was fabricated using the SMIC 0.18um CMOS technology with a die size of 1.0mm×1.2mm and the power consumption of approximately 1.1 mW. The ASIC was fully tested and the results indicated that the ASIC performed as desired. In the future an autonomous Field Programmable Analogue Array ASIC will be developed based on the current design.