Single-/Dual-Band 802.11a/b/g
World-Band Transceiver ICs
AC ELECTRICAL CHARACTERISTICS—802.11a Rx Mode (MAX2828/MAX2829) (continued)
(MAX2828/MAX2829 evaluation kits: V
CC
= +2.7V, f
IN
= 5.25GHz; receiver baseband I/Q outputs at 112mV
RMS
(-19dBV), f
REFOSC
=
40MHz, SHDN = RXENA = CS = high, RXHP = TXENA = SCLK = DIN = low, R
BIAS
= 11kΩ, registers set to default settings and cor-
responding test mode, T
A
= +25°C, unless otherwise noted. Unmodulated single-tone RF input signal is used, unless otherwise indi-
cated.) (Tables 1, 2, 3)
MIN
MAX
Voltage gain = 35dB,
with B7:B6 = 11
-24
Voltage gain = 20dB,
with B7:B6 = 10
-5
In-Band Input IP3
Tones at 7MHz and
8MHz, IM3 at 6MHz
and 9MHz, P
IN
=
-40dBm per tone
Voltage gain = 5dB,
with B7:B6 = 0X
13
I/Q Phase Error B7:B1 = 1101110, 1σ variation ±0.4
I/Q Gain Imbalance B7:B1 = 1101110, 1σ variation ±0.1 dB
Tx-to-Rx Conversion Gain for Rx
I/Q Calibration
B7:B1 = 0001111 (Note 4) 0 dB
I/Q Static DC Offset RXHP = 1, B7:B1 = 1101110, 1σ variation ±2mV
I/Q DC Droop
After switching RXHP to 0, D2 = 0 (see the Rx
Control/RSSI Register Definition section)
±1
RF Gain-Change Settling Time
Gain change from high gain to medium gain, high gain to
low gain, or medium gain to low gain; gain settling to
within ±2dB of steady state
0.4 µs
Baseband VGA Settling Time
Gain change from B5:B1 = 10111 to B5:B1 = 00111;
gain settling to within ±2dB of steady state
0.1 µs
Minimum differential resistance 10 kΩ
Rx I/Q Output Load Impedance
Maximum differential capacitance 8 pF
Spurious Signal Emissions at LNA
input
RF = 1GHz to 26.5GHz -50
RECEIVER BASEBAND FILTERS
Narrow-band mode 7.5
Nominal mode 9.5
Turbo mode 1 14
Baseband -3dB Corner
Frequency
(See the Lowpass
Filter Register
Definition section)
Turbo mode 2 18
f
BASEBAND
= 15MHz 20
f
BASEBAND
= 20MHz 39
Baseband Filter Rejection
(Nominal Mode)
f
BASEBAND
> 40MHz 80
dB
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