MAX2830
2.4GHz to 2.5GHz 802.11g/b RF Transceiver, PA,
and Rx/Tx/Antenna Diversity Switch
Typical Operating Characteristics (continued)
(MAX2830 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.)
LNA INPUT RETURN LOSS
Rx RSSI STEP RESPONSE
-5
vs. RF FREQUENCY (ANT 2)
3.0
Rx RSSI OUTPUT vs. INPUT POWER
(+32dB LNA GAIN STEP)
MAX2830 toc11
LOW GAIN
2.5
LNA = HIGH GAIN
3V
-10
2.0
LNA = MEDIUM GAIN
-15
-20
1.5
1.0
0
1.45V
HIGH GAI N
MID GAI N
0.5
LNA = LOW GAIN
0.45
-25
0
2300
2350
2400
2450
2500
2550
2600
-120 -100
-80
-60 -40
-20
0
20
200ns/div
RF FREQUENCY (MHz)
P IN (dBm)
3V
0V
1.5V
Rx RSSI STEP RESPONSE
(-32dB LNA GAIN STEP)
MAX2830 toc12
2.0V
0V
10mV
5mV
0V
Rx I/Q DC OFFSET SETTLING RESPONSE
(+8dB BB VGA GAIN STEP)
MAX2830 toc13
2.5V
0V
10mV
5mV
0mV
Rx I/Q DC OFFSET SETTLING RESPONSE
(-8dB BB VGA GAIN STEP)
MAX2830 toc14
0V
200ns/div
40ns/div
40ns/div
12
3V
0V
10mV
5mV
0V
Rx I/Q DC OFFSET SETTLING RESPONSE
(-16dB BB VGA GAIN STEP)
MAX2830 toc15
400ns/div
3V
0V
10mV
5mV
0V
Rx I/Q DC OFFSET SETTLING RESPONSE
(-32dB BB VGA GAIN STEP)
MAX2830 toc16
400ns/div
3V
0V
0V
-5mV
-10mV
I/Q OUTPUT DC ERROR DROOP
(RxHP = 1 → 0; 100Hz MODE)
MAX2830 toc17
20ms/div
Maxim Integrated
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