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Low-Cost RF Up/Downconverter
with LNA and PA Driver
__________________________________________Typical Operating Characteristics
(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.)
TRANSMIT-MODE SUPPLY CURRENT
vs. TEMPERATURE
RECEIVE-MODE SUPPLY CURRENT
vs. TEMPERATURE
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
38
36
34
TXEN = V CC
V CC = 5.5V
V CC = 4.0V
24
23
22
21
RXEN = V CC
V CC = 5.5V
V CC = 4.0V
0.10
0.09
0.08
0.07
0.06
RXEN = TXEN = GND
32
0.05
30
28
V CC = 2.7V
V CC = 3.0V
20
19
18
V CC = 2.7V
V CC = 3.0V
0.04
0.03
0.02
0.01
V CC = 5.5V
V CC = 4.0V
V CC = 3.0V
V CC = 2.7V
26
-40
-15
10
35
60
85
17
-40
-15
10
35
60
85
0
-40
-15
10
35
60
85
TEMPERATURE (°C)
STANDBY SUPPLY CURRENT
vs. TEMPERATURE
TEMPERATURE (°C)
LNA INPUT IMPEDANCE
vs. FREQUENCY
TEMPERATURE (°C)
LNA OUTPUT IMPEDANCE
vs. FREQUENCY
500
400
300
RXEN = TXEN = 2.0V
V CC = 5.5V
120
100
80
IMAGINARY
MAX2411A-05
RXEN = V CC
40
0
-40
250
200
150
RXEN = V CC
IMAGINARY
MAX2411A-06
0
-25
-50
V CC = 4.0V
60
-80
200
40
-120
100
-75
100
V CC = 2.7V
V CC = 3.0V
20
REAL
-160
50
REAL
-100
0
0
-200
0
-125
-40
-15
10
35
60
85
0
0.5
1.0
1.5
2.0
2.5
3.0
0
0.5
1.0
1.5
2.0
2.5
3.0
TEMPERATURE (°C)
LNA GAIN vs. FREQUENCY
FREQUENCY (GHz)
LNA GAIN vs. TEMPERATURE
FREQUENCY (GHz)
LNA INPUT IP3 vs. TEMPERATURE
30
25
1pF SHUNT CAPACITOR AT LNA INPUT
USING EV KIT MATCHING CIRCUIT
(OPTIMIZED FOR 1.9GHz)
20
19
RXEN = V CC
V CC = 5.5V
-5
-6
-7
RXEN = V CC
20
RXEN = V CC
18
V CC = 4.0V
-8
V CC = 2.7V
V CC = 3.0V
15
17
-9
-10
16
-11
V CC = 4.0V
10
5
15
14
V CC = 2.7V
V CC = 3.0V
-12
-13
-14
V CC = 5.5V
0
13
-15
0
0.5
1.0
1.5
2.0
2.5
3.0
-40
-15
10
35
60
85
-40
-20
0
20
40
60
80
100
FREQUENCY (GHz)
TEMPERATURE (°C)
TEMPERATURE (°C)
4
_______________________________________________________________________________________
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