A 10-300-MHz IF-digitizing IC with 90-105-dB dynamic range and 15-333-kHz bandwidth

An integrated low-noise amplifier, mixer, bandpass /spl Delta//spl Sigma/ analog-to-digital converter (ADC), decimation filter, and two synthesizers implement a general-purpose back-end for a narrow-band superheterodyne receiver. The /spl Delta//spl Sigma/ ADC is merged with the mixer and combines L...

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Bibliographic Details
Published in:IEEE journal of solid-state circuits 2002-12, Vol.37 (12), p.1636-1644
Main Authors: Schreier, R., Lloyd, J., Singer, L., Paterson, D., Timko, M., Hensley, M., Patterson, G., Behel, K., Zhou, J.
Format: Article
Language:English
Subjects:
Amplifiers
Analog-digital conversion
Band pass filters
Bandwidth
Circuits
Dynamic range
Integrated circuit noise
Low noise
Low-noise amplifiers
Mixers
Narrowband
Noise
Noise robustness
Power consumption
Resonator filters
Resonators
Synthesizers
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Description
Summary:An integrated low-noise amplifier, mixer, bandpass /spl Delta//spl Sigma/ analog-to-digital converter (ADC), decimation filter, and two synthesizers implement a general-purpose back-end for a narrow-band superheterodyne receiver. The /spl Delta//spl Sigma/ 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.
ISSN:0018-9200
1558-173X
DOI:10.1109/JSSC.2002.804331