Rapid Engineering Prototypes are real circuits that Maxim application engineers have built and measured in our labs. They can provide a starting point for new RF designs. They are not available as Evaluation Kits. Additional Information: Wireless Product Line Page Quick View Data Sheet for the MAX2323/MAX2325 Applications Technical Support Objective: To apply and measure this dual-band triple-mode CDMA front-end IC in a receiver with all 210MHz IFs. The MAX2323 was developed with a single, digital, IF output port. Having a common 210MHz IF, both digital mixers' gain is still adequate for good receiver sensitivity, and their IP2 performance and other related parameters offer sufficient margin for meeting 1/2 IF and additional interferers in a CDMA handset. In this application, the MAX2323 was tested for and successfully applied to a CDMA dual-band dual-mode handset front-end design. The circuit modification requirement for this project was to retune the FM analog and the cellular/PCS digital mixers to 210MHz IF. The MAX2323 low-noise amplifier (LNA) plus mixer is designed for dual-band CDMA cellular-phone handsets, but it can also be used in dual-band TDMA, GSM, EDGE, or WCDMA applications. It differs from its predecessor (the MAX2320) by adding a third "mid-gain" state for the cellular-band LNA that improves switchover hysteresis margin. It also comes in a smaller package (28-QFN) and offers increased third-order input intercept. Block Diagram of the Receive-Path Application Schematic of the MAX2323 Evaluation Kit (PDF, 58K) Bill of Materials, Part 1 Bill of Materials, Part 2 Related Parts   APP 459: Nov 01, 2000 MAX2323 Triple/Dual-Mode CDMA LNA/Mixers Full Data Sheet (PDF, 176kB) Free Samples Automatic Updates Would you like to be automatically notified when new application notes are published in your areas of interest? Sign up for EE-Mail™. We Want Your Feedback!   Download, PDF Format (31kB)  AN459, AN 459, APP459, Appnote459, Appnote 459