Integrated frequency-selective amplifiers for radio frequencies
- 1 December 1968
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Journal of Solid-State Circuits
- Vol. 3 (4) , 417-422
- https://doi.org/10.1109/jssc.1968.1049933
Abstract
The design approach for integrated selective amplifiers described here is based on a feedback configuration with a positive real zero in the loop transmission function. The basic circuit consists of two unity gain amplifiers and a transconductance block with RC imbedding. Temperature- insensitive performance, with Q values up to at least 150, at center frequencies in the RF range, is obtained for circuits fabricated with conventional diffusion and thin-film deposition techniques. Design equations are given and experimental data are reported for a 650-kHz amplifier with a Q of 50/spl plusmn/5 percent over the temperature range -10 to +110/spl deg/C.Keywords
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