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MAX2308：CDMA IF VGA及I/Q解调器，带有VCO及合成器

完备的CDMA IF子系统

The MAX2306/MAX2308/MAX2309 are IF receivers designed for dual-band, dual-mode, and single-mode N-CDMA and W-CDMA cellular phone systems. The signal path consists of a variable-gain amplifier (VGA) and I/Q demodulator. The devices feature guaranteed +2.7V operation, a gain control range of over 110dB, and high input IP3 (-31dBm at 35dB gain, 3.4dBm at -35dB gain). Unlike similar devices, the MAX2306 family of receivers includes dual oscillators and synthesizers to form a self-contained IF subsystem. The synthesizer's reference and RF dividers are fully programmable through a 3-wire serial bus, enabling dual-band system architectures using any common reference and IF frequency. The differential baseband outputs have enough bandwidth to suit both N-CDMA and W-CDMA systems, and offer saturated output levels of 2.7Vp-p at a low +2.75V supply voltage. Including the low-noise voltage-controlled oscillator (VCO) and synthesizer, the MAX2306 draws only 26mA from a +2.75V supply in CDMA (differential IF) mode. The MAX2306/MAX2308/MAX2309 are available in 28-pin QFN packages.

关键特性 Complete IF Subsystem Includes VCO and Synthesizer Supports Dual-Band, Triple-Mode Operation VGA with >110dB Gain Control Quadrature Demodulator High Output Level (2.7V) Programmable Charge-Pump Current Supports Any IF Frequency Between 40MHz and 300MHz 3-Wire Programmable Interface Low Supply Voltage (+2.7V)

MAX2306、MAX2308、MAX2309：功能框图 应用 全球星双模手机 单/双/三模CDMA手机 WCDMA手机 无线数据链接 无线本地环路(WLL)

数据手册DataSheet

关键参数

开发工具

• MAX2306EVKIT
• MAX2308EVKIT
• MAX2309EVKIT

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