EVALUATION KIT AVAILABLE
2.4GHz to 2.5GHz 802.11g/b RF Transceiver, PA,
and Rx/Tx/Antenna Diversity Switch
The MAX2830 direct conversion, zero-IF, RF transceiver
is designed specifically for 2.4GHz to 2.5GHz 802.11g/b
WLAN applications. The MAX2830 completely integrates
all circuitry required to implement the RF transceiver
function, providing an RF power amplifier (PA), an Rx/Tx
and antenna diversity switch, RF-to-baseband receive
path, baseband-to-RF transmit path, voltage-controlled
oscillator (VCO), frequency synthesizer, crystal oscillator,
and baseband/control interface. The MAX2830 includes
a fast-settling sigma-delta RF synthesizer with smaller
than 20Hz frequency steps and a digitally tuned crystal
oscillator allowing use of a low-cost crystal. No I/Q cali-
bration is required; however, the device also integrates
on-chip DC-offset cancellation and I/Q errors and carrier
leakage-detection circuits for improved performance.
Only an RF bandpass filter (BPF), crystal, a pair of
baluns, and a small number of passive components are
needed to form a complete 802.11g/b WLAN RF front-
The MAX2830 completely eliminates the need for an
external SAW filter by implementing on-chip monolithic fil-
ters for both the receiver and transmitter. The baseband
filters are optimized to meet the IEEE 802.11g standard
and proprietary turbo modes up to 40MHz channel band-
width. These devices are suitable for the full range of
802.11g OFDM data rates (6Mbps to 54Mbps) and
802.11b QPSK and CCK data rates (1Mbps to 11Mbps).
The ICs are available in a small, 48-pin TQFN package
measuring only 7mm x 7mm x 0.8mm.
Wi-Fi, PDA, VOIP, and Cellular Handsets
Wireless Speakers and Headphones
General 2.4GHz ISM Radios
o 2.4GHz to 2.5GHz ISM Band Operation
o IEEE 802.11g/b Compatible (54Mbps OFDM and
o Complete RF Transceiver, PA, Rx/Tx and Antenna
Diversity Switch, and Crystal Oscillator
Best-in-Class Transceiver Performance
62mA Receiver Current
3.3dB Rx Noise Figure
-75dBm Rx Sensitivity (54Mbps OFDM)
No I/Q Calibration Required
0.1dB/0.35° Rx I/Q Gain/Phase Imbalance
33dB RF and 62dB Baseband Gain Control
60dB Range Analog RSSI per RF Gain Setting
Fast Rx I/Q DC-Offset Settling
Programmable Baseband Lowpass Filter
20-Bit Sigma-Delta Fractional-N PLL with
< 20Hz Step Size
Digitally Tuned Crystal Oscillator
+17.1dBm Transmit Power (5.6% EVM with
31dB Tx Gain Control Range
Integrated Power Detector
Fully Integrated RF Input and Output
Matching and DC Blocking
Serial or Parallel Gain-Control Interface
> 40dB Tx Sideband Suppression Without
Rx/Tx I/Q Error Detection
o Transceiver Operates from +2.7V to +3.6V
o PA Operates from +2.7V to +4.2V
o Low-Power Shutdown Mode
o Small 48-Pin TQFN Package
(7mm x 7mm x 0.8mm)
TEMP RANGE PIN-PACKAGE
MAX2830ETM+T -40°C to +85°C 48 TQFN-EP*
*EP = Exposed paddle.
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
Pin Configurations appear at end of data sheet.
Functional Diagrams continued at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
Pin Configuration appears at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-0774; Rev 2; 3/11