5GHz Receiver
AC ELECTRICAL CHARACTERISTICS—Rx MODE (continued)
(Operating conditions, unless otherwise specified: V CC = 2.7V~3.6V, RF frequency = 5.351GHz, T A = -25 N C to +85 N C. LO frequency
= 5.35GHz. Reference frequency = 40MHz, ENABLE = high, CS = high, SCLK = DIN = low, with power matching at RXRF+ and
RXRF- differential ports using the Typical Operating Circuit . Receiver I/Q output at 100mV RMS loaded with 10k I differential load
resistance and 10pF load capacitance. The RSSI pin is loaded with 10k I load resistance to ground. Typical values measured at V CC
= 2.85V, channel bandwidths of 40MHz, T A = +25 N C.) (Note 1)
PARAMETER
Baseband -3dB Lowpass Corner
Frequency
Baseband Filter Stopband
Rejection
CONDITIONS
Main address 0 D1 = 0
Main address 0 D1 = 1
Rejection at 30MHz offset frequency for 20MHz channel
Rejection at 60MHz offset frequency for 40MHz channel
MIN
57
57
TYP
9.5
19
70
70
MAX
UNITS
MHz
dB
Baseband -3dB Highpass Corner Main address 5 D1 = 1
Frequency Main address 5 D1 = 0
50 F s after enabling receive mode and toggling RxHP
600
10
kHz
Steady-State I/Q Output DC Error
with AC-Coupling
from 1 to 0, averaged over many measurements if I/Q
noise voltage exceeds 1mV RMS , at any given gain set-
2
mV
ting, no input signal, 1-sigma value
I/Q Gain Imbalance
I/Q Phase Imbalance
Sideband Suppression
Receiver Spurious Signal
Emissions
RF RSSI Output Voltage
1MHz baseband output, 1-sigma value
1MHz baseband output, 1-sigma value
1MHz baseband output (Note 2)
LO frequency
2 x LO frequency
3 x LO frequency
4 x LO frequency
-20dBm input power
0.1
0.2
40
-75
-62
-75
-60
1.75
dB
degrees
dB
dBm/
MHz
V
Baseband RSSI Slope
Baseband RSSI Maximum Output
Voltage
Baseband RSSI Minimum Output
Voltage
19.5
26.5
2.3
0.5
35.5
mV/dB
V
V
Tx VGA gain at maximum (Main address 9 D9:D4
RF Loopback Conversion Gain
= 111111); Rx VGA gain at maximum - 24dB (Main
-6
+2
+10
dB
address 1 D3:D0 = 010 1)
_______________________________________________________________________________________
5
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