MAX2822 Datasheet, PDF (1/28 Pages) Maxim Integrated Products – 2.4GHz 802.11b Zero-IF Transceiver with Integrated PA and Tx/Rx Switch

19-2884; Rev 0; 7/03
EVAALVUAAILTAIOBNLEKIT
2.4GHz 802.11b Zero-IF Transceiver
with Integrated PA and Tx/Rx Switch
General Description
The MAX2822 single-chip transceiver is designed for
802.11b (11Mbps) applications operating in the 2.4GHz
to 2.5GHz ISM band. The transceiver includes all the
circuitry required to implement an 802.11b RF-to-base-
band transceiver solution, including the power amplifi-
er, transmit/receive switch, and 50Ω matching. The fully
integrated receive path, transmit path, VCO, frequency
synthesis, and baseband/control interface provide all
the required active RF circuitry. Only a small number of
passive components are needed to form the complete
radio front-end solution.
The IC eliminates the need for external IF SAW and RF
image-reject filters by utilizing a direct-conversion radio
architecture and monolithic baseband filters for both
receiver and transmitter. It is specifically optimized for
802.11b (11Mbps CCK) and 22Mbps PBCC™ applica-
tions. The baseband filtering and Rx and Tx signal
paths support the CCK modulation scheme for BER =
10^-5 at the required sensitivity levels.
The transceiver is suitable for the full range of 802.11b
data rates (1Mbps, 2Mbps, 5.5Mbps, and 11Mbps) as
well as the higher-rate 22Mbps PBCC standard. The
MAX2822 is available in the very small 7mm x 7mm 48-
lead QFN or thin QFN packages. The small solution size
makes it ideal for small form-factor 802.11b applications
such as PDAs, SmartPhones, and embedded modules.
Features
♦ 2.4GHz to 2.5GHz ISM Band Operation
♦ 802.11b (11Mbps CCK and 22Mbps PBCC) PHY
Compatible
♦ Integrated +17dBm PA
♦ Integrated PA Power Detector
♦ Integrated Transmit/Receive Switch
♦ Complete RF-to-Baseband Transceiver
Direct Up/Down Conversion
Monolithic Low-Phase-Noise VCO
Integrated Baseband Lowpass Filters
Integrated PLL with 3-Wire Serial Interface
Digital Bias Control for PA
Transmit Power Control
Receive Baseband AGC
Complete Baseband Interface
Digital Tx/Rx Mode Control
♦ -95dBm Rx Sensitivity at 1Mbps
♦ -85dBm Rx Sensitivity at 11Mbps
♦ Single +2.7V to +3.0V Supply
♦ 2µA Shutdown Mode
♦ Very Small 48-Pin QFN Package
Applications
802.11b PDAs and SmartPhones
802.11b Embedded Modules
802.11b PC Cards, Mini-PCI Cards
PART
MAX2822EGM
MAX2822ETM
Ordering Information
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
48 QFN
48 Thin QFN
Pin Configuration/Functional Diagram appears at end of
data sheet.
PBCC is a trademark of Texas Instruments, Inc.
________________________________________________________________ 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.