Low pass filter (3rd order Chebyshev filter) is based on the gyrators with cut-off frequency adjustment in wide range (6.5…23 MHz ). There are two modes for cut-off frequency programming: manually and automatically. The generator is used to adjust filter cut-off (CO) frequency in automatic mode. Also CO frequency can be fixed manually. Current consumption is 1.32 mA.
TSMC 0.18 µm SiGe BiCMOS
Wide cut-off frequency adjustment range (6.5 MHz…23 MHz)
Low pass filter cut-off frequency adjustment system