Single-/Dual-Band 802.11a/b/g
World-Band Transceiver ICs
AC ELECTRICAL CHARACTERISTICS—802.11g Rx Mode (MAX2829) (continued)
(MAX2829 evaluation kit: V
CC
= +2.7V, f
IN
= 2.437GHz; 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 correspond-
ing test mode, T
A
= +25°C, unless otherwise noted. Unmodulated single-tone RF input signal is used, unless otherwise indicated.)
(Tables 1, 2, 3)
MIN
MAX
Voltage gain ≥ 65dB, with B7:B6 = 11 3.5
Voltage gain = 50dB, with B7:B6 = 11 4
Voltage gain = 45dB, with B7:B6 = 10 16
DSB Noise Figure
Voltage gain = 15dB, with B7:B6 = 0X 36
dB
Output P-1
dB
Voltage gain = 90dB, with B7:B6 = 11 3.2
Voltage gain = 60dB,
with B7:B6 = 11
-10
Voltage gain = 45dB,
with B7:B6 = 10
-2
Out-of-Band Input IP3
-35dBm jammers at
40MHz and 78MHz
offset; based on IM3
at 2MHz
Voltage gain = 40dB,
with B7:B6 = 0X
21
Voltage gain = 40dB, with B7:B6 = 11 -29
Voltage gain = 25dB, with B7:B6 = 10 -14In-Band Input P-1
dB
Voltage gain = 5dB, with B7:B6 = 0X 2
Voltage gain = 40dB,
with B7:B6 = 11
-17
Voltage gain = 25dB,
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
14
I/Q Phase Error B7:B1 = 1101110, 1σ variation ±0.5
I/Q Gain Imbalance B7:B1 = 1101110, 1σ variation ±0.1 dB
Tx-to-Rx Conversion Gain for Rx
I/Q Calibration
B7:B1 = 0010101 (Note 4) -4 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 -67
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