2.3GHz to 2.7GHz MIMO Wireless Broadband
RF Transceiver
Typical Operating Characteristics (continued)
(V CC = 2.8V, T A = +25°C, f LO = 2.5GHz, f REF = 40MHz, CS = high, RXHP = SCLK = DIN = low, RF BW = 10MHz, Tx output at 50 Ω
unbalanced output of balun, using the MAX2839 Evalutation Kit.)
350
RX LPF GROUP DELAY
vs. FREQUENCY
CHANNEL BW = 5MHz
RX DC OFFSET SETTLING RESPONSE
(+8dB BB VGA GAIN STEP)
MAX2839 toc20
RX DC OFFSET SETTLING RESPONSE
(-8dB BB VGA GAIN STEP)
MAX2839 toc21
300
250
200
CHANNEL BW = 8MHz
CHANNEL BW = 9MHz
CHANNEL BW = 10MHz
2V/div
0V
0V
VGA GAIN
CONTROL
2V/div
0V
0V
VGA GAIN
CONTROL
150
100
50
0
5mV/div
5mV/div
0
2
4
6 8 10 12
14
16
10 μ s/div
10 μ s/div
FREQUENCY (MHz)
RX DC OFFSET SETTLING RESPONSE
(-16dB BB VGA GAIN STEP)
MAX2839 toc22
RX DC OFFSET SETTLING RESPONSE
(-32dB BB VGA GAIN STEP)
MAX2839 toc23
RX BB VGA SETTLING RESPONSE
(+8dB BB VGA GAIN STEP)
MAX2839 toc24
2V/div
0V
VGA GAIN
CONTROL
2V/div
0V
VGA GAIN
CONTROL
2V/div
VGA GAIN CONTROL
0V
0V
0V
5mV/div
2V/div
0V
1V/div
10 μ s/div
RX BB VGA SETTLING RESPONSE
(-8dB BB VGA GAIN STEP)
MAX2839 toc25
VGA GAIN CONTROL
200ns/div
5mV/div
2V/div
0V
1V/div
10 μ s/div
RX BB VGA SETTLING RESPONSE
(-16dB BB VGA GAIN STEP)
MAX2839 toc26
VGA GAIN CONTROL
200ns/div
1V/div
2V/div
0V
1V/div
200ns/div
RX BB VGA SETTLING RESPONSE
(-32dB BB VGA GAIN STEP)
MAX2839 toc27
VGA GAIN CONTROL
200ns/div
______________________________________________________________________________________
13
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