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MAX2323 Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX2323 Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 14 page ________________General Description 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 appli- cations by providing switched signal paths for cellular FM, cellular CDMA, and PCS CDMA. The MAX2325 is a cellu- lar-band dual-mode version. To optimize cellular-band dynamic range at minimum cur- rent, 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 stand- by time. 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. 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. ________________________Applications Dual-Band, Triple-Mode PCS/Cellular Phones Dual-Mode Cellular Phones ____________________________Features o 2.7V Operation o Dual Band, Triple Mode o Three LNA Gain Settings (Cellular) o Two LNA Gain Settings (PCS) o 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 o 2.5dB (typ) Cascade Noise Figure o Adjustable LNA IIP3, +5dBm to +13dBm o Ultra-Small 28-Pin Package (5mm x 5mm) Triple/Dual-Mode CDMA LNA/Mixers ________________________________________________________________ Maxim Integrated Products 1 19-1736; Rev 0; 7/00 For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. Pin Configuration/ Functional Diagram Typical Application Circuits appear at end of data sheet. MAX2323 25 26 27 28 22 23 24 8 9 10 11 12 13 14 15 16 17 18 19 20 21 1 2 3 4 5 6 7 GND CLNAIN SLEEP G2 G1 PLNAIN RLNA CDMA- GND BAND VCC FMOUT CDMA+ RBIAS QFN TOP VIEW PART TEMP. RANGE PIN- PACKAGE MAX2323EGI -40 °C to +85°C 28 QFN MAX2325EGI -40 °C to +85°C 28 QFN MAX2323EVKIT -40 °C to +85°C 28 QFN Ordering Information |
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