A low-voltage low-power 0.25µm CMOS ADSL analog front-end IC
2000
A 0.25µm 2.5V CMOS analog front-end IC for an ADSL system is presented. The IC contains all analog functions including gain-controlled transmit and receive amplifiers, highly linear continuous-time low pass filtering including on-chip automatic tuning, 8.8Ms/s ADC and DAC as well as a crystal driver and a DAC-controlled VCO. The IC has been realized in a mixed-signal 0.25µm triple-well CMOS technology, with a chip area of 25mm 2 , and a power consumption of only 300mW using 2.5V supply.
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