Datasheet

MAX2831/MAX2832
2.4GHz to 2.5GHz 802.11g/b
RF Transceivers with Integrated PA
6 _______________________________________________________________________________________
AC ELECTRICAL CHARACTERISTICS—Tx Mode
(MAX2831 EV kit: V
CC_
= 2.8V, V
CCPA
= V
CCTXPA
= 3.3V, T
A
= +25°C, f
RF
= 2.439GHz , f
LO
= 2.437GHz. f
REF
= 40MHz, SHDN =
RXTX = CS = high, and SCLK = DIN = low, with power matching for the differential RF pins using the typical applications circuit.
100mV
RMS
sine and cosine signal (or 100mV
RMS
54Mbps IEEE 802.11g I/Q signals wherever OFDM is mentioned) applied to base-
band I/Q inputs of transmitter (differential DC-coupled). Registers set to recommend settings and corresponding test mode, unless
otherwise noted. RF inputs/outputs specifications are referenced to device pins and do not include 1dB loss from EV kit PCB, balun,
and SMA connectors.) (Note 1)
PARAMETER CONDITIONS MIN TYP MAX UNITS
TRANSMIT SECTION: Tx BASEBAND I/Q INPUTS TO RF OUTPUTS
RF Output Frequency Range 2.4 2.5 GHz
Output power adjusted
to meet 5.6% EVM,
and spectral mask
18.5
54Mbps 802.11g
OFDM signal
B6:B1 = 000000 -7.5
MAX2831
802.11b signal,
141mV
RMS
,
IEEE802.11b I/Q
signals
Output power adjusted
to meet spectral mask
21
-3dB VGA back off -5.3
Output Power
MAX2832
B6:B1 = 000000 -31.5
dBm
U nw anted S i d eb and S up p r essi on Without I/Q calibration, B6:B1 = 100001 -42 dBc
Carrier Leakage at Center
Frequency of Channel
Without DC offset correction -30 dBc
1/3 x f
LO
-67
< 1GHz -36
> 1GHz -47
2/3 x f
LO
-64
4/3 x f
LO
-42
5/3 x f
LO
-65
8/3 x f
LO
-51
2 x f
LO
-33
Transmitter Spurious Signal
Emissions (MAX2831)
B6:B1 = 111000,
OFDM signal
3 x f
LO
-54
dBm/
MHz
1/3 x f
LO
-78
< 1GHz -65
> 1GHz -72
2/3 x f
LO
-78
4/3 x f
LO
-46
5/3 x f
LO
-72
8/3 x f
LO
-46
2 x f
LO
-60
Transmitter Spurious Signal
Emissions (MAX2832)
B6:B1 = 111111,
OFDM signal
3 x f
LO
-75
dBm/
MHz