LTC5548
8
5548f
For more information www.linear.com/LTC5548
Typical perForMance characTerisTics
Conversion Loss and IIP3 vs
RF Frequency (High Side LO)
Conversion Loss and IIP3
vs RF Frequency (High Side LO)
Conversion Loss and IIP3
vs RF Frequency (High Side LO)
Conversion Loss and IIP3
vs IF Frequency (Low Side LO) Input P1dB vs RF Frequency LO and 2LO Leakage to IF
Conversion Loss and IIP3 vs
RF Frequency (Low Side LO)
Conversion Loss and IIP3
vs RF Frequency (Low Side LO)
Conversion Loss and IIP3
vs RF Frequency (Low Side LO)
2GHz to 12GHz downmixer application with LO
frequency doubler enabled. V
CC
= 3.3V, EN = high, X2 = high, T
C
= 25°C, P
LO
= 0dBm, P
RF
= –5dBm (–5dBm/tone for two-tone IIP3
tests, Δf = 2MHz), IF = 240MHz, unless otherwise noted. Test circuit shown in Figure 1.
RF FREQUENCY (GHz)
2
CONVERSION LOSS (dB), IIP3 (dBm)
8
12
5548 G15
4
4 63 5 7 8 109 11
26
6
20
10
16
12
14
18
22
24
IIP3
CONVERSION LOSS
T
C
= –40°C
T
C
= 25°C
T
C
= 85°C
T
C
= 105°C
RF FREQUENCY (GHz)
2
CONVERSION LOSS (dB), IIP3 (dBm)
8
12
5548 G14
4
4 63 5 7 8 109 11
26
6
20
10
16
12
14
18
22
24
IIP3
CONVERSION LOSS
P
LO
= –6dBm
P
LO
= 0dBm
P
LO
= 3dBm
RF FREQUENCY (GHz)
2
CONVERSION LOSS (dB), IIP3 (dBm)
8
12
5548 G15
4
4 63 5 7 8 109 11
26
6
20
10
16
12
14
18
22
24
IIP3
CONVERSION LOSS
V
CC
= 3V
V
CC
= 3.3V
V
CC
= 3.6V
RF FREQUENCY (GHz)
2
CONVERSION LOSS (dB), IIP3 (dBm)
8
12
5548 G16
4
4 63 5 7 8 109 11
26
6
20
10
16
12
14
18
22
24
IIP3
CONVERSION LOSS
T
C
= –40°C
T
C
= 25°C
T
C
= 85°C
T
C
= 105°C
RF FREQUENCY (GHz)
2
CONVERSION LOSS (dB), IIP3 (dBm)
8
12
4
4 63 5 7 8 109 11
26
6
20
10
16
12
14
18
22
24
IIP3
CONVERSION LOSS
V
CC
= 3V
V
CC
= 3.3V
V
CC
= 3.6V
IF FREQUENCY (GHz)
0
CONVERSION LOSS (dB), IIP3 (dBm)
8
3
4
1 20.5 1.5 2.5
26
6
12
22
10
14
18
16
20
24
CONVERSION LOSS
IIP3
RF = 5.8GHz
RF = 9.8GHz
RF FREQUENCY (GHz)
2
INPUT P1dB (dBm)
10
12
5548 G20
9
4 63 5 7 8 109 11
16
12
14
11
13
15
HIGH SIDE LO
LOW SIDE LO
LO FREQUENCY (GHz)
1 2
LO AND 2LO LEAKAGE (dBm)
–30
5
–50
43
–10
–40
–20
LO-IF
2LO-IF
RF FREQUENCY (GHz)
2
CONVERSION LOSS (dB), IIP3 (dBm)
8
12
5548 G17
4
4 63 5 7 8 109 11
26
6
20
10
16
12
14
18
22
24
IIP3
CONVERSION LOSS
P
LO
= –6dBm
P
LO
= 0dBm
P
LO
= 3dBm