Low-Cost RF Up/Downconverter
with LNA and PA Driver
_____________________________Typical Operating Characteristics (continued)
(MAX2411A EV kit, V CC = +3.0V, V GC = +2.15V, RXEN = TXEN = low, all measurements performed in 50 ? environment, f LO = 1.5GHz,
P LO = -10dBm, f LNAIN = f PADRIN = f RXMXIN = 1.9GHz, P LNAIN = -32dBm, P PADRIN = P RXMXIN = -22dBm, f IF, IF = 400MHz, P IF = -32dBm
(Note 1), all impedance measurements made directly to pin (no matching network), T A = +25°C, unless otherwise noted.)
12
TRANSMIT MIXER CONVERSION GAIN
vs. TEMPERATURE
10
TRANSMIT MIXER CONVERSION GAIN
vs. RF FREQUENCY
3.5
TRANSMIT MIXER OUTPUT IP3
vs. TEMPERATURE
10
8
6
TXEN = V CC
V CC = 2.7V
V CC = 4.8V
V CC = 5.5V
9
8
7
6
5
NARROW BAND AT TXMXOUT,
EV KIT MATCH AT IF, IF
EV KIT MATCH NETWORK
2.5
1.5
TXEN = V CC
V CC = 4.0V
V CC = 5.5V
4
4
3
AT TXMXOUT AND IF, IF
0.5
2
2
-0.5
V CC = 3.0V
0
1
0
TXEN = V CC
IF = 400MHz
-1.5
V CC = 2.7V
-40
-20
0
20
40
60
80
0.5
1.0
1.5
2.0
2.5
3.0
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
TRANSMIT MIXER GAIN AND NOISE FIGURE
vs. LO POWER
RF FREQUENCY (GHz)
IF OR IF OUTPUT IMPEDANCE
vs. FREQUENCY
TEMPERATURE (°C)
LO PORT RETURN LOSS vs. FREQUENCY
10
TXEN = V CC
1000
RXEN = V CC
MAX2411Atoc32
0
0
5
RXEN = TXEN = V CC
9
8
NF
GAIN
800
600
IMAGINARY
-300
-600
10
15
20
7
6
400
200
SINGLE-ENDED
-900
-1200
25
30
REAL
35
5
-18
-15
-12
-9
-6
-3
0
0
0
200
400
600
800
-1500
1000
40
0
0.5
1.0
1.5
2.0
2.5
3.0
LO POWER (dBm)
FREQUENCY (MHz)
FREQUENCY (GHz)
_______________________________________________________________________________________
7
相关PDF资料
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