For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

General Description

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 refer-

ence and RF dividers are fully programmable through a

3-wire serial bus, enabling dual-band system architec-

tures using any common reference and IF frequency.

The differential baseband outputs have enough band-

width 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-con-

trolled oscillator (VCO) and synthesizer, the MAX2306

draws only 26mA from a +2.75V supply in CDMA (dif-

ferential IF) mode.

The MAX2306/MAX2308/MAX2309 are available in 28-

pin QFN packages.

Applications

Single/Dual/Triple-Mode CDMA Handsets

Globalstar Dual-Mode Handsets

Wireless Data Links

W-CDMA Handsets

Wireless Local Loop (WLL)

Features

o Complete IF Subsystem Includes VCO and

Synthesizer

o Supports Dual-Band, Triple-Mode Operation

o VGA with >110dB Gain Control

o Quadrature Demodulator

o High Output Level (2.7V)

o Programmable Charge-Pump Current

o Supports Any IF Frequency Between 40MHz and

300MHz

o 3-Wire Programmable Interface

o Low Supply Voltage (+2.7V)

CDMA IF VGAs and I/Q Demodulators

with VCO and Synthesizer

________________________________________________________________ Maxim Integrated Products

1

19-2014; Rev 2; 7/01

EVALUATION

KIT AVAILABLE

Pin Configurations appear at end of data sheet.

Block Diagram appears at end of data sheet.

Ordering Information

Selector Guide

*Exposed paddle

PART

TEMP. RANGE

PIN-PACKAGE

MAX2306EGI

-40

°C to +85°C

28 QFN-EP*

MAX2308EGI

-40

°C to +85°C

28 QFN-EP*

MAX2309EGI

-40

°C to +85°C

28 QFN-EP*

PART

MODE

DESCRIPTION

INPUT RANGE

MAX2306

AMPS,

Cellular CDMA,

PCS CDMA

Dual Band, Triple Mode with Two

IF VCOs

40MHz to 300MHz

MAX2308

AMPS,

Cellular CDMA,

PCS CDMA

Dual Band, Triple Mode with Common

IF VCO

70MHz to 300MHz

MAX2309

External AMPS,

Cellular CDMA,

PCS CDMA

Dual Band, Triple Mode (Drives External

AMPS Discriminator)

70MHz to 300MHz