Complete CDMA IF Subsystem
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.
title | Download file |
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MAX2306-MAX2309 Data Sheet | MAX2306-MAX2309.pdf |
Part Number | VSUPPLY (V) | ISUPPLY (mA) | Applications | Band/ Freq. (MHz) | Footprint (mm x mm) | Package/Pins | Budgetary Price |
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See Notes | |||||||
MAX2306 | 2.7 | 11.4 to 25.9 | 450MHz-Band IS-2000 IS-95 OFDM Single, Dual and Triple Mode CDMA Handsets WCDMA | 40 - 300 | 5.0 x 5.0 | QFN/28 TQFN/28 | $4.73 @1k |
MAX2308 | Single, Dual and Triple Mode CDMA Handsets | 70 - 300 | QFN/28 TQFN/28 | - | |||
MAX2309 | Single, Dual and Triple Mode CDMA Handsets | 70 - 300 | QFN/28 TQFN/28 | $3.92 @1k | |||
Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
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MAX2309EGI | No Longer Available | MAX2309ETI+ | QFN,;28 pin;26 mm² | -40°C to +85°C | No |
MAX2309EGI-T | No Longer Available | MAX2309ETI+T | QFN,;28 pin;26 mm² | -40°C to +85°C | No |
MAX2309ETI+ | Active | TQFN,;28 pin;26 mm² | -40°C to +85°C | Lead Free | |
MAX2309ETI+T | Active | TQFN,;28 pin;26 mm² | -40°C to +85°C | Lead Free |