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2.3GHz to 2.7GHz MIMO Wireless Broadband
RF Transceiver
AC ELECTRICAL CHARACTERISTICS TABLE—Tx MODE
(MAX2839 Evaluation Kit, V CC_ = 2.8V, T A = +25°C, f RF = 2.501GHz, f LO = 2.5GHz, f REF = 40MHz, ENABLE = CS = high, RXTX =
SCLK = DIN = low, with power matching for the differential RF pins using the typical applications and registers set to default settings
and corresponding test mode, unless otherwise noted. Lowpass filter is set to 10MHz RF channel BW. 1MHz 90mV RMS cosine and
sine signals applied to I/Q baseband inputs of transmitter (differential DC coupled)). (Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Tx BASEBAND I/Q INPUTS TO R F OUTPUTS
RF Output Frequency Range
Peak-to-Peak Peak Gain Variation
over RF Band
Total Voltage Gain
Max Output Power over
Output optimally matched over 200MHz RF BW
Max gain -3dB; at unbalanced 50 Ω matched output
64 QAM OFDM signal conforming to spectral emission
2.3
2.5
12
2.7
GHz
dB
dB
Frequency for Any Given 200MHz mask and -36dB EVM after I/Q imbalance calibration by
Band
modem (Note 3)
0
dBm
RF Output Return Loss
RF Gain Control Range
Unwanted Sideband Suppression
RF Gain Control Binary Weights
Carrier Leakage
Tx I/Q Input Impedance (R||C)
Baseband Frequency Response
for 5MHz RF Channel BW
Baseband Frequency Response
for 10MHz RF Channel BW
Baseband Group Delay Ripple
Given 200MHz band in the 2.3GHz to 2.7GHz range, for
which the matching has been optimized
B6:B1 = 000000 to 111111
Without calibration by modem, and excludes modem I/Q
imbalance; P OUT = 0dBm
B1
B2
B3
B4
B5
B6
Relative to 0dBm output power; without calibration by
modern
Differential resistance
Differential capacitance
0 to 2.3MHz
At > 25MHz
0 to 4.6MHz
At > 41.6MHz
0 to 2.3MHz (BW = 5MHz)
0 to 4.6MHz (BW = 10MHz)
8
62
45
1
2
4
8
16
32
-35
100
0.5
0.2
80
0.2
80
20
12
dB
dB
dBc
dBc
k Ω
pF
dB
dB
ns
6
_______________________________________________________________________________________
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