ML485
1.6–3.2 GHz High IP3 Mixer with Integrated LO Amp
Typical Downconversion Performance Plots (cont’d)
Performance using the circuitry on the ML485-PCB Evaluation Board
Input IP3 vs RF Frequency vs Temperature
LO = 0 dBm, IF=51MHz, low-side LO
Input IP3 vs RF Frequency vs Temperature
LO = 0 dBm, IF=201MHz, low-side LO
40
40
38
Input IP3 vs RF Frequency vs Temperature
LO = 0 dBm, IF=301MHz, low-side LO
40
Input IP3 (dBm)
38
38
36
34
32
30
28
26
1600
+25°
C
-40°
C
+85°
C
Input IP3 (dBm)
36
34
32
30
28
26
1600
+25°
C
-40°
C
+85°
C
Input IP3 (dBm)
36
34
32
30
28
26
1600
+25°
C
-40°
C
+85°
C
1800
2000
2200
2400
2600
2800
3000
3200
1800
2000
2200
2400
2600
2800
3000
3200
1800
2000
2200
2400
2600
2800
3000
3200
RF Frequency (MHz)
RF Frequency (MHz)
Input IP3 vs RF Frequency vs LO Power
+25° C,IF=201MHz, low-side LO
40
38
RF Frequency (MHz)
Input IP3 vs RF Frequency vs LO Power
+25°C,IF=51MHz, low-side LO
Input IP3 vs RF Frequency vs LO Power
+25°C,IF=301MHz, low-side LO
40
40
38
Input IP3 (dBm)
38
Input IP3 (dBm)
36
34
32
30
28
26
1600
1800
2000
2200
2400
2600
LO = 0 dBm
LO = -2 dBm
LO = 4 dBm
36
34
32
30
28
26
1600
LO = 0 dBm
LO = -2 dBm
LO = 4 dBm
1800
2000
2200
2400
2600
2800
3000
3200
2800
3000
3200
Input IP3 (dBm)
36
34
32
30
28
26
1600
LO = 0 dBm
LO = -2 dBm
LO = 4 dBm
1800
2000
2200
2400
2600
2800
3000
3200
RF Frequency (MHz)
RF Return Loss vs RF Frequency
+25C, LO = 0 dBm
RF Frequency (MHz)
IF Return Loss vs IF Frequency
+25C, LO = 0 dBm
0
RF Frequency (MHz)
LO Return Loss vs LO Frequency
+25C, LO = 0 dBm
RF Return Loss (dB)
-5
-10
-15
-20
-25
-30
1600
IF = 51MHz
IF = 201MHz
IF = 301MHz
IF Return Loss (dB)
-5
-10
-15
-20
-25
LO = 1550MHz
LO = 1850MHz
LO =1650MHz
LO = 1950MHz
LO = 1750MHz
LO = 2050MHz
LO Return Loss (dB)
0
0
-5
-10
-15
-20
-25
1600
1800
2000
2200
2400
2600
2800
3000
50
100
150
200
250
300
1800
2000
2200
2400
2600
2800
3000
3200
RF Frequency (MHz)
L-R Isolation vs LO Frequency vs Temperature
Referenced with LO = 0 dBm
5
IF Frequency (MHz)
L-I Isolation vs LO Frequency vs Temperature
Referenced with LO = 0 dBm
LO Frequency (MHz)
R-I Isolation vs LO Frequency vs Temperature
Referenced with LO = 0 dBm
20
18
16
14
12
10
8
6
-40°
C
+85°
C
+25°
C
35
L-R Isolation (dB)
L-I Isolation (dB)
4
3
2
1
0
1600
-40°
C
+85°
C
+25°
C
30
25
20
15
10
5
1600
R-I Isolation (dB)
-40°
C
+85°
C
+25°
C
1800
2000
2200
2400
2600
2800
3000
3200
1800
2000
2200
2400
2600
2800
3000
3200
4
1600
1800
2000
2200
2400
2600
2800
3000
3200
LO Frequency (MHz)
LO Frequency (MHz)
LO Frequency (MHz)
Input P1dB vs RF Frequency
+25°C, IF = 201MHz, Low-side LO at 0 dBm
21.0
Input P1dB (dBm)
20.5
20.0
19.5
19.0
18.5
18.0
1600
1800
2000
2200
2400
2600
2800
3000
RF Frequency (MHz)
Specifications and information are subject to change without notice
WJ Communications, Inc
•
Phone 1-800-WJ1-4401
•
FAX: 408-577-6621
•
e-mail: sales@wj.com
•
Web site: www.wj.com
Page 3 of 4 February 2008 Rev 1
WJCI [ WJ COMMUNICATION. INC. ]
