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2.4GHz to 2.5GHz 802.11g/b
RF Transceivers with Integrated PA
Typical Operating Characteristics (continued)
(MAX2831 EV kit, V CC_ = 2.8V, V CCPA = V CCTXPA = 3.3V, T A = +25°C, f LO = 2.437GHz, f REF = 40MHz, SHDN = CS = high, RXHP =
SCLK = DIN = low.)
Rx RSSI STEP RESPONSE
Rx RSSI STEP RESPONSE
3.0
Rx RSSI OUTPUT vs. INPUT POWER
(+32dB LNA GAIN STEP)
MAX2831/32 toc11
(-32dB LNA GAIN STEP)
MAX2831/32 toc12
2.5
2.0
1.5
1.0
0.5
0
LNA = HIGH GAIN
LNA = MEDIUM GAIN
LNA = LOW GAIN
3V
0
1.45V
0.45
3V
0V
1.5V
0V
-120 -100
-80
-60 -40
-20
0
20
200ns/div
200ns/div
P IN (dBm)
2.0V
0V
10mV
5mV
0V
3V
0V
10mV
5mV
Rx I/Q DC OFFSET SETTLING RESPONSE
(+8dB BB VGA GAIN STEP)
MAX2831/32 toc13
40ns/div
Rx I/Q DC OFFSET SETTLING RESPONSE
(-32dB BB VGA GAIN STEP)
MAX2831/32 toc16
2.5V
0V
10mV
5mV
0mV
3V
0V
0V
-5mV
-10mV
Rx I/Q DC OFFSET SETTLING RESPONSE
(-8dB BB VGA GAIN STEP)
MAX2831/32 toc14
40ns/div
I/Q OUTPUT DC ERROR DROOP
(RxHP = 1 → 0; 100Hz MODE)
MAX2831/32 toc17
3V
0V
10mV
5mV
0V
3V
0V
500mV
0V
Rx I/Q DC OFFSET SETTLING RESPONSE
(-16dB BB VGA GAIN STEP)
MAX2831/32 toc15
400ns/div
Rx BB VGA SETTLING RESPONSE
(+8 GAIN STEP)
MAX2831/32 toc18
-500mV
0V
400ns/div
20ms/div
40ns/div
12
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