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2.3GHz to 2.7GHz MIMO Wireless Broadband
RF Transceiver
DC ELECTRICAL CHARACTERISTICS TABLE (continued)
(MAX2839 Evaluation Kit, V CC _ = 2.7V to 3.6V, T A = -40°C to +85°C, Rx set to the maximum gain. RXTX set according to operating
mode, ENABLE = CS = high, SCLK = DIN = low, no input signal at RF inputs, all RF inputs and outputs terminated into 50 Ω .
90mV RMS differential I and Q signals (1MHz) applied to I, Q baseband inputs of transmitter in transmit mode, all registers set to rec-
ommended settings and corresponding test mode, unless otherwise noted. Typical values are at V CC_ = 2.8V, f LO = 2.5GHz and
T A = +25°C, unless otherwise noted.) (Note 1)
PARAMETER
Digital Input Current Low, I IL
CONDITIONS
MIN
-1
TYP
MAX
+1
UNITS
μA
LOGIC OUTPUTS: DOUT, CLKOUT
Digital Output Voltage High, V OH
Digital Output Voltage Low, V OL
Sourcing 100μA
Sinking 100μA
V CC -
0.4
0.4
V
V
AC ELECTRICAL CHARACTERISTICS TABLE—Rx MODE
(MAX2839 Evaluation Kit, V CC_ = 2.8V, T A = +25°C, f RF = 2.4999GHz, f LO = 2.5GHz; baseband output signal frequency = 100kHz,
f REF = 40MHz, ENABLE = RXTX = CS = high, SCLK = DIN = low, with power matching for the differential RF pins using the typical
applications circuit and registers set to default settings and corresponding test mode, unless otherwise noted. Lowpass filter is set
to 10MHz RF channel BW. Unmodulated single tone RF input signal is used with specifications which normally apply over the entire
operating conditions, unless otherwise indicated.) (Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
RF INPUT TO I, Q BASEBAND-LOADED OUTPUT
RF Input Frequency Range
Peak-to-Peak Gain Variation over
RF Input Frequency Range
RF Input Return Loss
Tested at band edges and band center
All LNA settings
2.3
0.8
12
2.7
GHz
dB
dB
Total Voltage Gain
T A = -40°C to
+85°C
Maximum gain, B7:B0 = 0000000
Minimum gain, B7:B0 = 1111111
90
99
5
13
dB
From max RF gain to max RF gain - 8dB
8
RF Gain Steps
From max RF gain to max RF gain - 16dB
16
dB
Gain Change Settling Time
From max RF gain to max RF gain - 32dB
Any RF or baseband gain change; gain settling to within
±1dB of steady state; RXHP = 1
Any RF or baseband gain change; gain settling to within
±0.1dB of steady state; RXHP = 1
32
200
2000
ns
Baseband Gain Range
From maximum baseband gain (B5:B0 = 000000) to
minimum gain (B5:B0 = 111111), T A = -40°C to +85°C
58
63
66
dB
Baseband Gain Minimum Step
Size
Voltage gain = 65dB with max RF gain (B7:B6 = 00)
Voltage gain = 50dB with max RF gain - 8dB (B7:B6 = 01)
1
2.3
5.5
dB
DSB Noise Figure
Voltage gain = 45dB with max RF gain - 16dB
(B7:B6 = 10)
Voltage gain = 15dB with max RF gain - 32dB
(B7:B6 = 11)
13
27
dB
_______________________________________________________________________________________
3
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