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MAX2820|MAX2820A|MAX2821|MAX2821A

更新时间： 2024-02-02 21:43:12
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2.4GHz 802.11b Zero-IF Transceivers

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MAX2820|MAX2820A|MAX2821|MAX2821A 数据手册

 浏览型号MAX2820|MAX2820A|MAX2821|MAX2821A的Datasheet PDF文件第2页浏览型号MAX2820|MAX2820A|MAX2821|MAX2821A的Datasheet PDF文件第3页浏览型号MAX2820|MAX2820A|MAX2821|MAX2821A的Datasheet PDF文件第4页浏览型号MAX2820|MAX2820A|MAX2821|MAX2821A的Datasheet PDF文件第5页浏览型号MAX2820|MAX2820A|MAX2821|MAX2821A的Datasheet PDF文件第6页浏览型号MAX2820|MAX2820A|MAX2821|MAX2821A的Datasheet PDF文件第7页 
19-2493; Rev 3; 1/04  
2.4GHz 802.11b Zero-IF Transceivers  
General Description  
Features  
The MAX2820/MAX2820A and MAX2821/MAX2821A  
single-chip zero-IF transceivers are designed for the  
802.11b (11Mbps) applications operating in the  
2.4GHz to 2.5GHz ISM band. The transceivers are  
nearly identical, except the MAX2821 and MAX2821A  
also provide a low-power shutdown mode and an ana-  
log voltage reference output. The MAX2820A/  
MAX2821A are cost-reduced versions, virtually identi-  
cal in pinout and performance to the MAX2820/  
MAX2821. The transceivers include all the circuitry  
required to implement an 802.11b RF-to-baseband  
transceiver solution, providing a fully integrated  
receive path, transmit path, VCO, frequency synthesis,  
and baseband/control interface. Only a PA, RF switch,  
RF BPF, and a small number of passive components are  
needed to form the complete radio front-end solution.  
♦ 2.4GHz to 2.5GHz ISM Band Operation  
♦ 802.11b (11Mbps CCK and 22Mbps PBCC) PHY  
Compatible  
♦ Complete RF-to-Baseband Transceiver  
Direct-Conversion Upconverters and  
Downconverters  
Monolithic Low-Phase-Noise VCO  
Integrated Baseband Lowpass Filters  
Integrated PLL with 3-Wire Serial Interface  
Digital Bias Control for External PA  
Transmit Power Control (Range > 25dB)  
Receive Baseband AGC (Range > 65dB)  
Complete Baseband Interface  
Digital Tx/Rx Mode Control  
Analog Receive Level Detection  
The ICs eliminate the need for external IF and base-  
band filters by utilizing a direct-conversion radio archi-  
tecture and monolithic baseband filters for both  
receiver and transmitter. They are specifically opti-  
mized for 802.11b (11Mbps CCK) applications. The  
baseband filtering and Rx and Tx signal paths support  
the CCK modulation scheme for BER = 10-5 at the  
required sensitivity levels.  
♦ -97dBm Rx Sensitivity at 1Mbps  
♦ -87dBm Rx Sensitivity at 11Mbps  
♦ +2dBm Transmit Power (11Mbps CCK)  
♦ Single +2.7V to +3.6V Supply  
The devices are suitable for the full range of 802.11b  
data rates (1Mbps, 2Mbps, 5.5Mbps, and 11Mbps) and  
also the higher-rate 22Mbps PBCCTM standard. The  
MAX2820 and MAX2821 are available in a 7mm × 7mm  
48-lead QFN package. The MAX2820, MAX2821,  
MAX2820A, and MAX2821A are available in a 48-lead  
thin QFN package.  
♦ Low-Current Shutdown Mode (MAX2821 only)  
♦ Very Small 48-Pin QFN Package(s)  
Ordering Information  
Applications  
PART  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
802.11b 11Mbps WLAN  
MAX2820EGM-TD  
MAX2820ETM-TD  
MAX2820AETM-TD  
MAX2821EGM-TD  
MAX2821ETM-TD  
MAX2821AETM-TD  
48 QFN  
+
802.11b 22Mbps PBCC High-Data-Rate WLAN  
48 Thin QFN  
48 Thin QFN  
48 QFN  
802.11a + b Dual-Band WLAN  
2.4GHz ISM Band Radios  
48 Thin QFN  
48 Thin QFN  
PBCC is a trademark of Texas Instruments, Inc.  
Pin Configuration/Functional Diagram and Typical  
Application Circuit appear at end of data sheet.  
________________________________________________________________ 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.  
1234567...26

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