A 0.6 V, 2.11 MHz, 62 dB SFDR active-RC filter in 0.13 mu m CMOS process

作者：Seok Ji Hwan; Jo Jun Gi; Yoo Changsik^*

来源：International Journal of Circuit Theory and Applications, 2010, 38(1): 99-107.

DOI：10.1002/cta.526

• active-RC filter
• CMOS
• operational amplifier
• biquad
• low-voltage operation

Active-RC biquad is proposed, which allows the DC level of the input of operational amplifier (op-amp) to be different from that of the op-amp output, enabling the low-voltage operation. The proposed biquad realizes a second-order transfer function with only one op-amp, rendering even lower power consumption. By cascading two biquads, a 0.6 V fourth-order filter is realized in a 0.13 mu m CMOS technology. While dissipating only 0.42mW, the filter shows 2.11 MHz cut-off frequency and 62dB spurious-free dynamic range.

• 出版日期2010-2