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MAX9981 PDF预览

MAX9981

更新时间: 2024-11-17 22:25:39
品牌 Logo 应用领域
美信 - MAXIM /
页数 文件大小 规格书
15页 409K
描述
825MHz to 915MHz, Dual SiGe High-Linearity Active Mixer

MAX9981 数据手册

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19-2588; Rev 0; 9/02  
825MHz to 915MHz, Dual SiGe High-Linearity  
Active Mixer  
General Description  
Features  
The MAX9981 dual high-linearity mixer integrates a local  
oscillator (LO) switch, LO buffer, LO splitter, and two  
active mixers. On-chip baluns allow for single-ended RF  
and LO inputs. The active mixers eliminate the need for  
an additional IF amplifier because the mixer provides a  
typical overall conversion gain of 2.1dB.  
+27.3dBm Input IP3  
+13.6dBm Input 1dB Compression Point  
825MHz to 915MHz RF Frequency Range  
70MHz to 170MHz IF Frequency Range  
725MHz to 1085MHz LO Frequency Range  
2.1dB Conversion Gain  
The MAX9981 active mixers are optimized to meet the  
demanding requirements of GSM850, GSM900, and  
CDMA850 base-station receivers. These mixers provide  
exceptional linearity with an input IP3 of greater than  
+27dBm. The integrated LO driver allows for a wide  
range of LO drive levels from -5dBm to +5dBm. In addi-  
tion, the built-in high-isolation switch enables rapid LO  
selection of less than 250ns, as needed for GSM trans-  
ceiver designs.  
10.8dB Noise Figure  
42dB Channel-to-Channel Isolation  
-5dBm to +5dBm LO Drive  
+5V Single-Supply Operation  
Built-In LO Switch with 52dB LO1 to LO2 Isolation  
ESD Protection  
The MAX9981 is available in a 36-pin QFN package  
(6mm 6mm) with an exposed paddle, and is specified  
over the -40°C to +85°C extended temperature range.  
Integrated RF and LO Baluns for Single-Ended  
Inputs  
Ordering Information  
Applications  
GSM850/GSM900 2G and 2.5G EDGE Base-  
Station Receivers  
PART  
TEMP RANGE PIN-PACKAGE  
MAX9981EGX-T -40°C to +85°C 36 QFN-EP* (6mm 6mm)  
*EP = Exposed paddle.  
Cellular cdmaOne™ and cdma2000™ Base-  
Station Receivers  
Pin Configuration/  
Functional Diagram  
TDMA and Integrated Digital Enhanced Network  
(iDEN)™ Base-Station Receivers  
TOP VIEW  
Digital and Spread-Spectrum Communication  
Systems  
Microwave Point-to-Point Links  
RFMAIN  
TAPMAIN  
MAINBIAS  
GND  
1
2
3
4
5
6
7
8
9
27 LO2  
26 GND  
25 GND  
24 GND  
23 LOSEL  
22 GND  
MAX9981  
GND  
GND  
DIVBIAS  
TAPDIV  
RFDIV  
21  
V
CC  
20 GND  
19 LO1  
cdmaOne is a trademark of CDMA Development Group.  
cdma2000 is a trademark of Telecommunications Industry  
Association.  
iDEN is a trademark of Motorola, Inc.  
6mm x 6mm QFN-EP  
________________________________________________________________ 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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