Title :
A 58dB SNR 6th order broadband 10.7 MHz SC ladder filter
Author :
Silva-Martinez, Jose ; Adut, Joseph ; Rocha-Perez, Miguel
Author_Institution :
Analog & Mixed Signal Center, Texas A&M Univ., College Station, TX, USA
Abstract :
A 6th order 10.7 MHz bandpass switched-capacitor ladder filter achieving 58 dB signal to noise ratio is presented. The filter is based on an operational transconductance amplifier (OTA) that presents both good accuracy and high slew-rate. The use of several techniques minimizes the capacitance spread. The passband ripple is less than 1 dB. The IM3 is -40 dB for a two tone input signal with a power of +3 dBm power level each. The chip was fabricated in a 0.35 μm CMOS process.
Keywords :
CMOS analogue integrated circuits; band-pass filters; integrated circuit design; ladder filters; operational amplifiers; radiofrequency filters; switched capacitor filters; 0.35 micron; 10.7 MHz; CMOS; OTA slew-rate; SNR; capacitance spread minimization; high-order broadband filter; ladder filter; operational transconductance amplifier; passband ripple; switched-capacitor filter; Capacitance; Capacitors; Circuit noise; Energy consumption; Feedback; Filters; Strontium; Switches; Topology; Transconductance;
Conference_Titel :
Custom Integrated Circuits Conference, 2003. Proceedings of the IEEE 2003
Print_ISBN :
0-7803-7842-3
DOI :
10.1109/CICC.2003.1249350
