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

Volume

37

Issue

12

fYear

2002

fDate

12/1/2002 12:00:00 AM

Firstpage

1636

Lastpage

1644

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;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/JSSC.2002.804331

Filename

1088090