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MAX2450

更新时间： 2024-11-14 22:35:27
品牌 Logo 应用领域
美信 - MAXIM 射频调制器射频解调器微波调制器微波解调器射频和微波
页数 文件大小 规格书
8页 109K
描述
3V, Ultra-Low-Power Quadrature Modulator/Demodulator

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中文翻译

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MAX2450 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：ActiveReach Compliance Code：compliant
风险等级：5.71Is Samacsys：N
JESD-609代码：e0调制技术：I/Q
射频/微波设备类型：MODULATOR/DEMODULATOR端子面层：Tin/Lead (Sn/Pb)
Base Number Matches：1

MAX2450 数据手册

 浏览型号MAX2450的Datasheet PDF文件第2页浏览型号MAX2450的Datasheet PDF文件第3页浏览型号MAX2450的Datasheet PDF文件第4页浏览型号MAX2450的Datasheet PDF文件第5页浏览型号MAX2450的Datasheet PDF文件第6页浏览型号MAX2450的Datasheet PDF文件第7页 
19-0455; Rev 1; 9/98  
3 V, Ult ra -Lo w -P o w e r Qu a d ra t u re  
Mo d u la t o r/De m o d u la t o r  
MAX2450  
Ge n e ra l De s c rip t io n  
____________________________Fe a t u re s  
The MAX2450 combines a quadrature modulator and  
quadrature demodulator with a supporting oscillator and  
divide-by-8 prescaler on a monolithic IC. It operates  
from a single +3V supply and draws only 5.9mA. The  
demodulator accepts an amplified and filtered IF signal  
in the 35MHz to 80MHz range, and demodulates it into I  
and Q baseband signals with 51dB of voltage conver-  
sion gain. The IF input is terminated with a 400Ω thin-  
film resistor for matching to an external IF filter. The  
baseband outputs are fully differential and have 1.2Vp-p  
signal swings. The modulator accepts differential I and  
Q baseband signals with amplitudes up to 1.35Vp-p  
and bandwidths to 15MHz, and produces a differential  
IF signal in the 35MHz to 80MHz range.  
♦ Combines Quadrature Modulator and  
Demodulator  
♦ Integrated Quadrature Phase Shifters  
♦ On-Chip Oscillator (Requires External Tuning  
Circuit)  
♦ On-Chip Divide-by-8 Prescaler  
♦ Modulator Input Bandwidth Up to 15MHz  
♦ Demodulator Output Bandwidth Up to 9MHz  
♦ 51dB Demodulator Voltage Conversion Gain  
♦ CMOS-Compatible Enable  
♦ 5.9mA Operating Supply Current  
Pulling the CMOS-compatible ENABLE pin low shuts  
down the MAX2450 and reduces the supply current to  
less than 1µA. To minimize spurious feedback, the  
MAX2450’s internal oscillator is set at twice the IF via  
external tuning components. The oscillator and associ-  
ated phase shifters produce differential signals exhibit-  
ing low a mp litud e a nd p ha s e imb a la nc e , yie ld ing  
modulator sideband rejection of 38dB. The MAX2450  
comes in a QSOP package.  
1µA Shutdown Supply Current  
Ord e rin g In fo rm a t io n  
PART  
TEMP. RANGE  
PIN-PACKAGE  
MAX2450CEP  
0°C to +70°C  
20 QSOP  
Ap p lic a t io n s  
Digital Cordless Phones  
Fu n c t io n a l Dia g ra m  
GSM and North American Cellular Phones  
Wireless LANs  
17  
I _OUT  
16  
Digital Communications  
I_OUT  
DEMODULATOR  
Two-Way Pagers  
20  
IF_IN  
BIAS  
P in Co n fig u ra t io n  
15  
14  
Q_OUT  
Q_OUT  
400Ω  
TOP VIEW  
IF_OUT  
IF_OUT  
GND  
IF_IN  
GND  
V
1
2
20  
19  
0°  
9
10  
11  
÷ 2  
÷ 4  
LO_V  
PRE_OUT  
CC  
PRESCALER  
TANK  
TANK  
QUADRATURE  
PHASE  
GENERATOR  
3
18 CC  
12  
13  
I_IN  
I_OUT  
4
17  
16  
15  
14  
13  
12  
11  
90°  
÷ 2  
LOCAL  
OSCILLATOR  
LO_GND  
MAX2450  
MAX2450  
I_IN  
I_OUT  
Q_OUT  
Q_OUT  
LO_GND  
TANK  
5
4
5
I_IN  
I_IN  
Q_IN  
6
1
2
Q_IN  
IF_OUT  
IF_OUT  
7
MODULATOR  
Σ
6
7
ENABLE  
PRE_OUT  
Q_IN  
Q_IN  
8
9
18  
V
CC  
MASTER BIAS  
BANDGAP BIAS  
LO_V  
CC  
TANK  
10  
3, 19  
GND  
8
QSOP  
ENABLE  
________________________________________________________________ Maxim Integrated Products  
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.  
For small orders, phone 1-800-835-8769.  
12345678

中文翻译

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