LT5557
6
5557fc
Typical perForMance characTerisTics
Conversion Gain, IIP3 and SSB
NF vs RF Frequency
2.6GHz Conversion Gain, IIP3 and
NF vs LO Power
LO Leakage and RF Isolation
vs LO and RF Frequency
Conversion Gain, IIP3 and SSB
NF vs RF Frequency
3.6GHz Conversion Gain, IIP3 and
SSB NF vs LO Power
LO Leakage and RF Isolation
vs LO and RF Frequency
Conversion Gain, IIP3 and NF
vs RF Frequency
900MHz Conversion Gain, IIP3
and NF vs LO Power
IF
OUT
, 2 × 2 and 3 × 3 Spurs
vs RF Input Power (Single Tone)
V
CC
= 3.3V, Test circuit shown in Figure 1.
900MHz application (with external RF/LO matching), 140MHz IF output, P
RF
= –6dBm (–6dBm/tone for 2-tone IIP3 tests, ∆f = 1MHz),
low side LO at 0dBm, unless otherwise noted.
2.3GHz to 2.7GHz application (with external RF matching) 360MHz IF output, P
RF
= –6dBm (–6dBm/tone for 2-tone IIP3 tests,
∆f = 1MHz), P
LO
= –3dBm, unless otherwise noted.
3.3GHz to 3.8GHz application (with external RF matching) 450MHz IF output, P
RF
= –6dBm (–6dBm/tone for 2-tone IIP3 tests,
∆f = 1MHz), low side LO at –3dBm, unless otherwise noted.
RF FREQUENCY (MHz)
750
G
C
(dB), NF (dB), IIP3 (dBm)
14
22
28
950
5557 G16
10
6
12
18
26
24
20
16
8
4
2
800
850
900
10501000
LOW SIDE LO
T
A
= 25°C
IF = 140MHz
IIP3
SSB NF
G
C
LO INPUT POWER (dBm)
G
C
(dB), NF (dB), IIP3 (dBm)
13
27
5557 G17
9
5
11
17
19
21
23
25
15
7
3
1
LOW SIDE LO
IF = 140MHz
IIP3
SSB NF
G
C
–40°C
25°C
85°C
RF INPUT POWER (dBm)
–15
OUTPUT POWER (dBm)
–75
–15
5
–5
15
–9 –3 0
5557 G18
–35
–55
–85
–25
–95
–45
–65
–12 –6 63 9 12
IF
OUT
(RF = 900MHz)
2RF-2LO
(RF = 830MHz)
3RF-3LO
(RF = 806.67MHz)
T
A
= 25°C
LO = 760MHz
IF = 140MHz
RF FREQUENCY (GHz)
2.3
G
C
(dB), NF (dB), IIP3 (dBm)
12
20
26
5557 G19
8
4
10
16
24
22
18
14
6
2
0
2.4
2.5
2.6
2.7
T
A
= 25°C
G
C
IIP3
SSB NF
LOW SIDE LO
HIGH SIDE LO
LO INPUT POWER (dBm)
–9
G
C
(dB), NF (dB), IIP3 (dBm)
12
20
26
–1
5557 G20
8
4
10
16
24
22
18
14
6
2
0
–7
–5
–3
31
LOW SIDE LO
IIP3
SSB NF
G
C
–40°C
25°C
85°C
LO/RF FREQUENCY (GHz)
LO LEAKAGE (dBm)
RF ISOLATION (dB)
5557 G21
1.9
–60
–50
–40
–30
–20
5
15
25
35
45
2.1 2.3 2.5 2.7 2.9 3.1
RF-LO
RF-IF
LO-IF
LO-RF
RF FREQUENCY (GHz)
3.3
G
C
(dB), NF (dB), IIP3 (dBm)
8
20
22
24
3.5
3.7
5557 G22
4
16
12
6
18
0
2
14
10
3.4
3.6
3.8
T
A
= 25°C
G
C
IIP3
SSB NF
LO INPUT POWER (dBm)
–9
G
C
(dB), NF (dB), IIP3 (dBm)
8
20
22
24
–5
–1
1
5557 G23
4
2
16
12
6
18
0
14
10
–7
–3
3
IIP3
SSB NF
G
C
–40°C
25°C
85°C
LO/RF FREQUENCY (GHz)
2.8
LO LEAKAGE (dBm)
RF ISOLATION (dB)
–50
–40
3.6
5557 G24
–60
–70
3.0
3.2
3.4
3.8
–30
35
45
25
15
55
RF-LO
RF-IF
LO-IF
LO-RF
