LTC5551
8
5551fa
For more information www.linear.com/LTC5551
Input P1dB vs RF Frequency
Conversion Gain, IIP3, P1dB and
NF vs Supply Voltage LO Leakage and RF Isolation
2-Tone IF Output Power, IM3 and
IM5 vs RF Input Power
Single Tone IF Output Power, 2 × 2
and 3 × 3 Spurs vs RF Input Power
2 × 2 and 3 × 3 Spurs
vs LO Power
Conversion Gain, IIP3 and NF
vs RF Frequency (Low Side LO)
Conversion Gain, IIP3 and NF
vs RF Frequency (High Side LO)
1950MHz Conversion Gain, IIP3
and NF vs LO Power
1100MHz to 2700MHz application. Low
Power Mode. V
CC
= 3.3V, EN = High, ISEL = High, T
C
= 25°C, P
LO
= 0dBm, P
RF
= 0dBm (0dBm/tone for two-tone IIP3 tests, ∆f = 2MHz),
IF = 153MHz, unless otherwise noted. Test circuit shown in Figure 1.
Typical ac perForMance characTerisTics
RF FREQUENCY (GHz)
1.1
1
IIP3 (dBm), NF (dB), G
C
(dB)
31
1.3
22
25
28
19
16
13
10
7
4
2.71.5 1.7 1.9 2.52.32.1
NF
G
C
IIP3
LOW POWER MODE
85°C
25°C
–40°C
RF FREQUENCY (GHz)
1.1
1
IIP3 (dBm), NF (dB), G
C
(dB)
31
1.3
22
25
28
19
16
13
10
7
4
2.71.5 1.7 1.9 2.52.32.1
G
C
NF
IIP3
LOW POWER MODE
85°C
25°C
–40°C
LO INPUT POWER (dBm)
–6
7
NF (dB), IIP3 (dBm)
G
C
(dB)
10
28
31
16
13
19
22
25
0
4
1
2
3
–4 –2 0
642
G
C
IIP3
NF
LOW POWER MODE
LOW SIDE LO
HIGH SIDE LO
RF = 1950MHz
RF FREQUENCY (GHz)
1.1
10
INPUT P1dB (dBm)
13
19
20
15
14
11
12
16
17
18
1.3 1.5 1.7
5551 G27
2.72.11.9 2.52.3
LOW POWER MODE
LOW SIDE LO
HIGH SIDE LO
RF INPUT POWER (dBm/TONE)
–10
–90
–80
OUTPUT POWER/TONE (dBm)
–70
–60
–50
–40
–30
–20
–10
20
–8
5551 G30
10
0
16–6 –4 –2 0 2 4 6 8 10 12 14
IM5
LOW POWER MODE
IM3
IF
OUT
RF1 = 1949MHz
RF2 = 1951MHz
LO = 1797MHz
RF INPUT POWER (dBm/TONE)
–10
–80
OUTPUT POWER (dBm)
–70
–60
–50
–40
–30
–20
–10
20
–7
5551 G31
10
0
17–4 –1 2 5 8 11 14
3RF-3LO
RF = 1848MHz
2RF-2LO
RF = 1873.5MHz
LO = 1797MHz
LOW POWER MODE
IF
OUT
RF = 1950MHz
LO INPUT POWER (dBm)
–6
–100
RELATIVE SPUR LEVEL (dBc)
–90
–80
–70
–60
–50
5551 G32
6–4 –2 0 2 4
2RF-2LO
RF = 1873.5MHz
RF = 1950MHz
P
RF
= –3dBm
LO = 1797MHz
LOW POWER MODE
3RF-3LO
RF = 1848MHz
LO/RF FREQUENCY (GHz)
1.1
–40
LO LEAKAGE (dBm)
RF ISOLATION (dB)
–10
0
–30
–20
–10
50
70
10
30
1.3 1.5 1.7 1.9
5551 G29
2.72.1 2.3 2.5
LO-RF
LOW POWER MODE
LO-IF
RF-IF
RF-LO
V
CC
SUPPLY VOLTAGE (V)
2.5
8
IIP3 (dBm), P1dB (dBm), NF (dB)
G
C
(dB)
11
35
14
17
38
23
20
26
29
32
0
1
2
3
5
4
2.6 2.7 2.8
5551 G28
3.63.02.9 3.1 3.2 3.3 3.4 3.5
IIP3
NF
P1dB
G
C
LOW POWER MODE
LOW SIDE LO
HIGH SIDE LO
RF = 1950MHz
