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MAX2830
2.4GHz to 2.5GHz 802.11g/b RF Transceiver, PA,
and Rx/Tx/Antenna Diversity Switch
AC ELECTRICAL CHARACTERISTICS—Tx Mode
(MAX2830 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 = ANTSEL = 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
baseband 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
Gain Control Range
54Mbps 802.11g OFDM
signal
6Mbits, OFDM, I/Q signals
B6:B1 = 000000 to 111000
Output power adjusted to
meet 5.6%EVM, and
spectral mask
Output power adjusted to
meet spectral mask
17.1
20.3
26
dBm
dB
Unwanted Sideband Suppression Without I/Q calibration, B6:B1 = 100001
-42
dBc
Carrier Leakage at Center
Frequency of Channel
Without DC offset correction
1/3 x f LO
< 1GHz
> 1GHz
-30
-67
-36
-47
dBc
Transmitter Spurious Signal
Emissions
B6:B1 = 111000,
OFDM signal
2/3 x f LO
4/3 x f LO
-64
-42
dBm/
MHz
5/3 x f LO
8/3 x f LO
2 x f LO
3 x f LO
-65
-55
-27
-54
RF Output Return Loss
Tx I/Q Input Load Impedance
(R || C)
Off-chip balun and single ended
Minimum differential resistance
Maximum differential capacitance
-15
20
0.7
dB
k ?
pF
Baseband -3dB Corner
Frequency
D1:D0 = 01, Register 8
(A3:A0 = 1000)
Nominal mode
11
MHz
Baseband Filter Rejection
Minimum Power-Detector Output
Voltage
Maximum Power-Detector Output
Voltage
RF Power-Detector Response Time
6
At 30MHz, in nominal mode
Short sequence transmitter power = +10dBm
Short sequence transmitter power = +20dBm
62
0.35
1.2
0.3
dB
V
V
μs
Maxim Integrated
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