Abstract
It briefly introduced The MAX2323/MAX2325 of Triple/Dual-ModeCDMA LNA/Mixers function,internal structure, pin array and typical apply circuit. The MAX2323/MAX2325 are low-noise amplifier (LNA) plus mixer ICs optimized for code-division multiple-access (CDMA) applications in both cellular and PCS bands. The MAX2323 addresses dual-band, triple-mode CDMA applications
By providing switched signal paths for cellular FM, cellular CDMA, and PCS CDMA. The MAX2325 is a cellular-band dual-mode version. To optimize cellular-band dynamic range at minimum current,
the MAX2323/MAX2325 implement four LNA states: high gain/high linearity, high gain/low linearity, midgain, and low gain. In high-gain/high-linearity mode, The CDMA mixers are designed for high linearity, low noise, and differential IF outputs;while the FM mixer is designed for lower current and single-ended output. The MAX2323/MAX2325 can also be used in TDMA, EDGE, and W-CDMA phones.