Title :
A 10-300-MHz IF-digitizing IC with 90-105-dB dynamic range and 15-333-kHz bandwidth
Author :
Schreier, Richard ; Lloyd, Jennifer ; Singer, Larry ; Paterson, Donald ; Timko, Mike ; Hensley, Michael ; Patterson, Greg ; Behel, Kevin ; Zhou, James
Author_Institution :
Analog Devices Inc., Wilmington, MA, USA
fDate :
12/1/2002 12:00:00 AM
Abstract :
An integrated low-noise amplifier, mixer, bandpass ΔΣ analog-to-digital converter (ADC), decimation filter, and two synthesizers implement a general-purpose back-end for a narrow-band superheterodyne receiver. The ΔΣ ADC is merged with the mixer and combines LC, active-RC, and switched-capacitor resonators to achieve low noise and robust operation with low power consumption. A variable full-scale feature adds an automatic-gain-control capability to the ADC while saving power and minimizing noise at low signal levels.
Keywords :
automatic gain control; integrated circuit noise; low-power electronics; sigma-delta modulation; superheterodyne receivers; switched capacitor networks; 10 to 300 MHz; 15 to 333 kHz; IF-digitizing IC; automatic-gain-control capability; bandpass ΔΣ analog-to-digital converter; bandwidth; decimation filter; dynamic range; low-noise amplifier; narrow-band superheterodyne receiver; noise; power consumption; signal levels; switched-capacitor resonators; Analog-digital conversion; Band pass filters; Bandwidth; Dynamic range; Integrated circuit noise; Low-noise amplifiers; Narrowband; Noise robustness; Resonator filters; Synthesizers;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.2002.804331
