MA-COM AN-4005

Application Note
AN - 4005
MAFL-009272 Improved rejection circuit
5 - 1002 / 1125 - 1550 MHz
Product Image
Features
•
•
•
•
Released Rev. V1
Improved Rejection
RoHS Compliant
Lead Free
75 Ohm
Description
• M/A-COM Technology Solutions' MAFL-009272CD0AC0 is a surface mount diplex filter unit designed for
MoCA applications.
This filter includes the addition of an off chip circuit external to the diplex filter. This circuit improves rejection between 2GHz - 3GHz.
Recommended rejection circuit configuration, Recommended component values and typical spec table are
given below.
Recommended Rejection Circuit Configuration
Typical spec
Parameter
Recommended Component Values
Description
Ref Des
Qty
CAP, SMT, 0402, 0.3pF, +/- 2% 50V,COG
C1
1.00
CAP, SMT, 0402, 1.2pF, +/- 2% 50V,COG
C2
1.00
CAP, SMT, 0402, 0.82pF, +/- 2% 50V,COG
C3
1.00
CAP, SMT, 0402, 1.1pF, +/- 2% 50V,COG
C4
1.00
CAP, SMT, 0402, 0.5pF, +/- 2% 50V,COG
C5
1.00
Not Stuffed
C6
-
CAP, SMT, 0402,1.8pF, +/- 2% 50V,COG
C7
1.00
CAP, SMT, 0402, 0.5pF, +/- 2% 50V,COG
C8
1.00
IND, SMT, 0402, 3.3nH, +/-5%, 500mA
L1
1.00
IND, SMT, 0402, 2.7nH, +/-5%, 500mA
L2
1.00
IND, SMT, 0402, 4.7nH, +/-5%, 500mA
L3
1.00
Common To Low
Insertion Loss
5-42 MHz
42 – 860 MHz
860 – 1002 MHz
Rejection
1130 – 1550 MHz
Common to High
Insertion Loss
1125 – 1550 MHz
Rejection
5-1002 MHz
2250 – 2400 MHz
2400 – 2600 MHz
2600 – 3000 MHz
Common Port Return Loss
5-600 MHz
600 – 950 MHz
950 – 1002 MHz
1125 – 1200 MHz
1200 – 1550 MHz
Common Port voltage transient
Units
Typ
dB
dB
dB
0.1
0.6
1.5
dB
40
dB
1.7
dB
dB
dB
dB
40
35
50
34
dB
dB
dB
dB
dB
V
16
12
13
12
12
200
1
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions
is considering for development. Performance is based on target specifications, simulated results,
and/or prototype measurements. Commitment to develop is not guaranteed.
PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology
Solutions has under development. Performance is based on engineering tests. Specifications are
typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available.
Commitment to produce in volume is not guaranteed.
• North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400
• India Tel: +91.80.4155721
• China Tel: +86.21.2407.1588
Visit www.macomtech.com for additional data sheets and product information.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
changes to the product(s) or information contained herein without notice.
Application Note
AN - 4005
MAFL-009272 Improved rejection circuit
5 - 1002 / 1125 - 1550 MHz
Released Rev. V1
Typical Filter Performance with off chip circuit
MAFL-009272-CD0AC0-S11
MAFL-009272-CD0AC0-S21
0
0
-1 0
-10
-2 0
-20
-3 0
dB
-4B
d0
-30
-5 0
-40
-6 0
-50
-7 0
-8 0
-60
5
504
1003
1502
2001
2500
2999
5
504
1003
1502
2001
2500
2999
Frequency
Frequency
MAFL-009272-CD0AC0 - S32
MAFL-009272-CD0AC0 - S31
0
0
-10
-10
-20
-20
-30
-30
-40
B
d
B
-40
d
-50
-50
-60
-60
-70
-70
-80
-80
-90
5
504
1003
1502
2001
2500
2999
Frequency
5
504
1003
1502
2001
2500
2999
Frequency
2
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions
is considering for development. Performance is based on target specifications, simulated results,
and/or prototype measurements. Commitment to develop is not guaranteed.
PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology
Solutions has under development. Performance is based on engineering tests. Specifications are
typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available.
Commitment to produce in volume is not guaranteed.
• North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400
• India Tel: +91.80.4155721
• China Tel: +86.21.2407.1588
Visit www.macomtech.com for additional data sheets and product information.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
changes to the product(s) or information contained herein without notice.