Abstract
It briefly introduced quadrature demodulator with an integrated intermediate frequency(IF) MAX2511 with the microcontroller function,internal structure,pin array and typical apply circuit. The MAX2511 is a complete, highly integrated IF for applications employing a dual –conversionar -chitecture. Alternatively, the MAX2511 can be usedas a single conversionntransceiver if the RF operatingfrequency ranges from 200MHz to 440MHz.The max2511 is consist of a image-reject
Mixer,a amplifier,a voc,a output-driver and a IF filter. The MAX2511 is widely used in PWT1900 PACS, PHS, DECT and Other PCS, Wireless Handsets and Base Stations and Wireless Data Links
KEY WORD: limiting amplifier IF mixer
image-reject mixer downconverter