MAX2320

19-1535; Rev 1; 6/00 UAL IT MAN TION K A ET U E L H A S EV TA WS DA FOLLO Adjustable, High-Linearity, SiGe Dual-Band LNA/Mixer ICs Features o Ultra-High Linearity at Ultra-Low Current and Noise o +2.7V to +3.6V Operation o Pin-Selectable Low-Gain Mode Reduces Gain by 17dB and Current by 3mA o Pin-Selectable Paging Mode Reduces Current Draw by 6mA when Transmitter Is Not in Use o LO Output Buffers o LO Frequency Doubler (MAX2321) o LO Frequency Divider (MAX2326) o 0.1µA Shutdown Current o 20-Pin TSSOP-EP Package General Description The MAX2320/MAX2321/MAX2322/MAX2324/MAX2326/ MAX2327 high-performance silicon germanium (SiGe) receiver front-end ICs set a new industry standard for low noise and high linearity at a low supply current. This family integrates a variety of unique features such as an LO frequency doubler and divider, dual low-noise amplifier (LNA) gain settings, and a low-current paging mode that extends the handset standby time. The MAX2320 family includes six ICs: four operate at both cellular and PCS frequencies, one operates at cellular frequencies, and one at PCS frequencies (see Selector Guide). Each part includes an LNA with a high input third-order intercept point (IIP3) to minimize intermodulation and cross-modulation in the presence of large interfering signals. In low-gain mode, the LNA is bypassed to provide higher cascaded IIP3 at a lower current. For paging, a low-current, high-gain mode is provided. The CDMA mixers in cellular and PCS bands have hig...