REP007
REP007: Cellular Front-End IC Drives IFR3100 IF Demodulator
Overview
Design Resources
Design & Integration File
- Block Diagram of the Receive-Path Application
- Schematic of the MAX2323 Evaluation Kid
- Bill of Materials pt
- Bill of Materials pt 2
- Performance Results of the MAX2323
Description
The MAX2323 offers very attractive Icc versus noise figure and linearity, so this front-end IC is found in applications replacing poorer-performing ICs from other non-Maxim chipsets. This application was developed to match the IF port to the MSM-based IFT3100 IF demodulator. Note that the MAX2323 PCS LNA was measured at a 1.9dB noise figure, which could likely be improved further given the time.
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
Parts Used
Documentation & Resources
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REP007 Design Files3/3/2021ZIP137K
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