DocumentCode :
922799
Title :
A 120 MHz AM/FM PLL-IC with Dual On-Chip Programmable Charge Pump/Filter OP-AMP
Author :
Apetz, U. ; Scheckel, B. ; Weil, G.
Author_Institution :
Siemens AG, Components Division
Issue :
3
fYear :
1981
Firstpage :
234
Lastpage :
242
Abstract :
In the past single chip frequency synthesizer tuning systems have been developed which are suitable for simple radio sets, but bring problems if designed into more sophisticated radios. Separation of the control and display functions from the tuning function allow the PLL circuit to be situated near the tuners and the control and display function near the front of the receiver. This minimises internal radiation as well as the number and length of internal interconnections.
Keywords :
Charge pumps; Circuit optimization; Displays; Filters; Frequency synthesizers; Operational amplifiers; Phase locked loops; Tuned circuits; Tuners; Tuning;
fLanguage :
English
Journal_Title :
Consumer Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0098-3063
Type :
jour
DOI :
10.1109/TCE.1981.273444
Filename :
4050448
Link To Document :
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