lt5521 Linear Technology Corporation, lt5521 Datasheet - Page 7

• Manufacturer Part Number: lt5521
• Description: Very High Linearity Active Mixer
• Manufacturer: Linear Technology Corporation

TYPICAL AC PERFOR A CE CHARACTERISTICS
P
frequency.
f
shown in Figure 1 is tuned for 1.95GHz output frequency and V
LO
LO
–100
–40
–80
–20
–60
20
20
19
18
17
16
15
14
13
12
11
10
= 1.7GHz, f
= –5dBm, V
0
–20
–14
Noise Figure vs LO Power
P
OUT
IM2
IM3
–12
, IM3 and IM2 vs Input Power
P
–15
–10 –8
OUT
–40 C
IF
CC
LO POWER (dBm)
= 250MHz, f
–10
= 5V, EN = 2.9V, T
–6
P
IN
85 C
–4
(dBm)
–2
–5
25 C
RF
0
= 1.95GHz, P
2
0
85 C
25 C
–40 C
IM3
5521 G25
5521 G23
4
IM2
A
W U
= 25 C, unless otherwise noted. Test circuit shown in Figure 1 is tuned for 1.045GHz output
5
6
LO
–2.5
–0.5
–1.0
–1.5
–2.0
0.5
–1
–2
= –5dBm, V
4
3
2
1
0
0
–20
940
Conversion Gain vs Input Power
Low Side LO (LS) and High Side
LO (HS) Comparison: Conversion
Gain and IIP3 vs RF Frequency
f
IF
G
C
= 44MHz
–15
990
CC
–10
= 3.3V, EN = 2.9V, T
RF
CC
P
OUT
IN
1040
= 3.3V.
–5
–40 C
(dBm)
25 C
85 C
(MHz)
HS
LS
HS
LS
0
1090
5
5521 G34
5521 G26
IIP3
10
1140
A
= 25 C, unless otherwise noted. Test circuit
25
24
23
22
21
20
19
f
LO
= 1001MHz, f
–4
10
–2
8
4
6
2
0
1750
Conversion Gain and IIP3
vs RF Frequency
14.0
13.5
13.0
12.5
12.0
11.5
11.0
1800
945
Low Side LO (LS) and High Side
LO (HS) Comparison: Noise Figure
vs RF Frequency
f
85 C
25 C
–40 C
IF
1850
= 44MHz
HS
LS
985
IF
1900
= 44MHz, f
RF
G
OUT
C
1950
1025
RF
(MHz)
OUT
2000
(MHz)
RF
1065
2050
= 1045MHz,
LT5521
2100
1105
5521 G27
IIP3
2150
5521 G24
13
27
25
21
19
17
23
15
7
1145
5521f