MAX2325

· 2.7V Operation
· Dual Band, Triple Mode
· Three LNA Gain Settings (Cellular)
· Two LNA Gain Settings (PCS)
· 18mA in Low-Gain Mode 19.5mA in Paging and Midgain Mode 26.5mA in High-Gain, High-Linearity Mode 16.5mA in FM Mode, High-Gain, Low-Linearity Mode
· 2.5dB (typ) Cascade Noise Figure
· Adjustable LNA IIP3, +5dBm to +13dBm
· Ultra-Small 28-Pin Package (5mm x 5mm)

V_DD to GND...........................................................-0.3V to +4.3V
Other Pins to GND......................................-0.3V to (V_DD + 0.3V)
LNA Input Level ....................................................................1Vp
RF LNA Input Power .......................................................+5dBm
Digital Input Current .......................................................±10mA
Continuous Power Dissipation (T_A = +70°C)
48-Pin TQFP-EP (derate 12.5mW/°C above +70°C) ....2000mW
Operating Temperature Range ........................-40°C to +85° C
Junction Temperature.....................................................+150° C
Storage Temperature Range .........................-65°C to +150°C
Soldering Temperature (10s) .........................................+300°C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

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 adjustable high-intercept LNA minimizes desensitization in the presence of a large interfering signal. For the other gain states, the LNA current is reduced to improve standby time.

The  MAX2323/MAX2325  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. Each band is implemented with a separate mixer to optimize performance for the specific band.

The MAX2323/MAX2325 can also be used in TDMA, EDGE, and W-CDMA phones.