MAX2837 Ver la hoja de datos (PDF) - Maxim Integrated
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MAX2837 Datasheet PDF : 34 Pages
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MAX2837
2.3GHz to 2.7GHz Wireless
Broadband RF Transceiver
AC Electrical Characteristics—Tx MODE
(MAX2837 evaluation kit: VCC_ = 2.8V, TA = +25°C, fRF = 2.502GHz, fLO = 2.5GHz; fREF = 40MHz, ENABLE = TXENABLE = CS
= high, and RXENABLE = SCLK = DIN = low, with power matching for the differential RF pins using the Typical Operating Circuit.
Lowpass filter is set to 10MHz RF channel BW, 90mVRMS sine and cosine signal (or 90mVRMS 64QAM 1024-FFT OFDMA FUSC I/Q
signals wherever OFDM is mentioned) applied to baseband I/Q inputs of transmitter (differential DC-coupled).) (Note 1)
PARAMETER
CONDITIONS
TRANSMIT SECTION: Tx BASEBAND I/Q INPUTS TO RF OUTPUTS
RF Output Frequency Range
Peak-to-Peak Gain Variation over
RF Band
Output optimally matched over 200MHz RF BW
Total Voltage Gain
Max gain; at unbalanced 50Ω balun output
Maximum Output Power over
OFDM signal conforming to spectral emission mask and
Frequency for Any Given 200MHz -36dB EVM after I/Q imbalance calibration by modem
Band
(Note 3)
RF Output Return Loss
Given 200MHz band in the 2.3GHz to 2.7GHz range,
for which the matching has been optimized
RF Gain Control Range
Unwanted Sideband Suppression
Without calibration by modem, and excludes modem
I/Q imbalance; POUT = 0dBm
B1
B2
B3
RF Gain-Control Binary Weights B4
B5
B6
MIN TYP MAX UNITS
2.3
2.7 GHz
2.5
dB
12
dB
0
dBm
8
dB
45
dB
45
dBc
1
2
4
8
dB
16
16
Carrier Leakage
Relative to 0dBm output power; without calibration by modem
-35
dBc
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
Minimum differential resistance
Maximum differential capacitance
0 to 2.3MHz
At > 25MHz
0 to 4.6MHz
At > 17MHz
0 to 2.3MHz (BW = 5MHz)
0 to 4.6MHz (BW = 10MHz)
100
kΩ
0.5
pF
0.2
dB
80
0.2
dB
80
20
ns
12
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