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MAX2308EGI-T

更新时间: 2024-02-06 17:14:15
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MAX2308EGI-T 数据手册

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19-2014; Rev 2; 7/01  
CDMA IF VGAs and I/Q Demodulators  
with VCO and Synthesizer  
General Description  
Features  
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).  
Complete IF Subsystem Includes VCO and  
Synthesizer  
Supports Dual-Band, Triple-Mode Operation  
VGA with >110dB Gain Control  
Quadrature Demodulator  
High Output Level (2.7V)  
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.  
Programmable Charge-Pump Current  
Supports Any IF Frequency Between 40MHz and  
300MHz  
3-Wire Programmable Interface  
Low Supply Voltage (+2.7V)  
Ordering Information  
PART  
TEMP. RANGE  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
28 QFN-EP*  
28 QFN-EP*  
28 QFN-EP*  
The MAX2306/MAX2308/MAX2309 are available in 28-  
pin QFN packages.  
MAX2306EGI  
MAX2308EGI  
MAX2309EGI  
Applications  
Single/Dual/Triple-Mode CDMA Handsets  
Globalstar Dual-Mode Handsets  
Wireless Data Links  
*Exposed paddle  
Pin Configurations appear at end of data sheet.  
Block Diagram appears at end of data sheet.  
W-CDMA Handsets  
Wireless Local Loop (WLL)  
Selector Guide  
PART  
MODE  
DESCRIPTION  
INPUT RANGE  
AMPS,  
Cellular CDMA,  
PCS CDMA  
Dual Band, Triple Mode with Two  
IF VCOs  
MAX2306  
40MHz to 300MHz  
AMPS,  
Cellular CDMA,  
PCS CDMA  
Dual Band, Triple Mode with Common  
IF VCO  
MAX2308  
MAX2309  
70MHz to 300MHz  
70MHz to 300MHz  
External AMPS,  
Cellular CDMA,  
PCS CDMA  
Dual Band, Triple Mode (Drives External  
AMPS Discriminator)  
________________________________________________________________ Maxim Integrated Products  
1
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.  

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