MAX2831ETMT データシートの表示（PDF） - Maxim Integrated
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MAX2831ETMT Datasheet PDF : 34 Pages
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2.4GHz to 2.5GHz 802.11g/b
RF Transceivers with Integrated PA
AC ELECTRICAL CHARACTERISTICS—Tx Mode
(MAX2831 EV kit: VCC_ = 2.8V, VCCPA = VCCTXPA = 3.3V, TA = +25°C, fRF = 2.439GHz , fLO = 2.437GHz. fREF = 40MHz, SHDN =
RXTX = CS = high, and SCLK = DIN = low, with power matching for the differential RF pins using the typical applications circuit.
100mVRMS sine and cosine signal (or 100mVRMS 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
TRANSMIT SECTION: Tx BASEBAND I/Q INPUTS TO RF OUTPUTS
RF Output Frequency Range
MIN TYP MAX UNITS
2.4
2.5
GHz
Output Power
Output power adjusted
54Mbps 802.11g to meet 5.6% EVM,
18.5
OFDM signal
and spectral mask
MAX2831
B6:B1 = 000000
-7.5
802.11b signal,
141mVRMS,
IEEE802.11b I/Q
Output power adjusted
to meet spectral mask
21
signals
dBm
Unwanted Sideband Suppression
Carrier Leakage at Center
Frequency of Channel
Transmitter Spurious Signal
Emissions (MAX2831)
Transmitter Spurious Signal
Emissions (MAX2832)
-3dB VGA back off
MAX2832
B6:B1 = 000000
Without I/Q calibration, B6:B1 = 100001
Without DC offset correction
B6:B1 = 111000,
OFDM signal
B6:B1 = 111111,
OFDM signal
1/3 x fLO
< 1GHz
> 1GHz
2/3 x fLO
4/3 x fLO
5/3 x fLO
8/3 x fLO
2 x fLO
3 x fLO
1/3 x fLO
< 1GHz
> 1GHz
2/3 x fLO
4/3 x fLO
5/3 x fLO
8/3 x fLO
2 x fLO
3 x fLO
-5.3
-31.5
-42
-30
-67
-36
-47
-64
-42
-65
-51
-33
-54
-78
-65
-72
-78
-46
-72
-46
-60
-75
dBc
dBc
dBm/
MHz
dBm/
MHz
6 _______________________________________________________________________________________
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