Data Sheet

CER0687A
768.5 Mhz Duplexer
Revision B – Origin Date: May 5, 2009 – Revision Date: July 28, 2011
Features
• Low Loss
• Low Ripple
• High Rejection
Description
Surface mount, silver (Ag) coated ceramic
duplexer. Developed for use in 700 MHz
subscriber and infrastructure applications.
Weight: 3.9 grams typical
Material: Filter is composed of a ceramic
block plated with Ag and a shield made of
nickel silver plated steel.
Filter complies with RoHS standards.
Electrical Specifications
Parameter
Low Band Response (S21)
Pass band Ilos s
Pass band Ripple
Pass band Return Los s @ Port 1
Pass band Return Los s @ Port 2
Attenuation
High Band Response (S13)
Pass band Ilos s
Pass band Ripple
Pass band Return Los s @ Port 1
Pass band Return Los s @ Port 2
Attenuation
Isolation (S23)
Rejection @ Low Band
Rejection @ High Band
Frequency
MHz
Typical
@ 25ºC
Specification
@ 25ºC
Spec over
-40ºC to +85ºC
746
746
746
746
776
-
757
757
757
757
787
-2.9
2.1
-11.0
-11.0
-52.0
-3.40
2.40
-10.00
-10.00
-50.00
-3.50
2.50
-10.00
-10.00
-49.00
776
776
776
776
746
-
787
787
787
787
757
-3.2
2.7
-11.0
-11.0
-41.0
-3.40
2.90
-10.00
-10.00
-39.00
-3.80
3.00
-10.00
-10.00
-38.00
746 - 757
776 - 787
-43.0
-53.0
-41.00
-51.00
-40.00
-50.00
Power into any port
3 Watt max
Note: Supplier shall test each filter to the critical electrical specifications of the above table. Any subsequent audits may deviate from in value due to
measurement repeatability among different test systems. Such deviations shall not exceed the following limits:
Specification Allowance
Insertion Loss
0.1 dB
Return Loss
1.0 dB
Stopbands
1.0 dB
•“This product is covered by one or more of the following U.S. and foreign patents including: US 4,692,726;US 4,742,562; US 4,800,348;US 4,829,274;US 5,146,193;EP 0573597;DE 0573597;FR 0573597;JP 508149/92;KR 142171;US
5,162,760;US 5,218,329;US 5,250,916;US 5,327,109;US 5,488,335;CA 2114029;FR 9306297;GB 2273393;JP 3205337;KR 115113;CN 93106228.4;US 5,512,866;EP 0706719;DE 0706719;FR 0706719;GB 0706719;CN 95190359.4;US
5,602,518;US 5,721,520;US 5,745,018;EP 0910875;DE 0910875;DK 0910875;FR 0910875;GB 0910875;IE 0910875;JP 505182/98;KR 10-323013;US 5,994,978;US 6,462,629;CN 00810420.4;US 6,559,735;US 6,650,202;US 6,834,429.Other US
and foreign patents pending.
•CTS Corporation 2006 reserves all copyrights in the layout, design and configuration of the patterns on this product.”
Document No. 008-0256-0
Page 1 of 2
Rev. X4VH
- CTS Electronic Components - www.ctscorp.com - 4800 Alameda Blvd. NE – Albuquerque, NM 87113-
CER0687A
768.5 Mhz Duplexer
Revision B – Origin Date: May 5, 2009 – Revision Date: July 28, 2011
Mechanical Drawing
Dimension Nominal (mm)
A
B
C
D
E
F
G
H
I
J
K
M
Electrical response
700 715 730 745 760
21.54
10.30
0.76
1.00
1.00
10.67
10.67
4.00
0.76
11.30
7.95
7.95
Tolerance (mm) +/-
Max
max
0.13
0.13
0.13
0.13
0.13
max
0.13
max
0.13
0.13
PCB Layout
775 790 805 820 835 850
0
40
-10
30
-20
20
-30
10
-40
0
-50
-10
-60
-20
-70
-30
-80
-40
751.5
781.5
Packaging and Marking
DIMENSION
REEL DIAMETER
REEL WEIGHT
REEL QUANTITY
UNITS SPECIFICATION
330
2.7
500
mm
kg
ea.
Product Marking
CTS
687
YWW
Customer Feed Direction
Document No. 008-0256-0
Wo
Ao
Bo
Ko
Po
Inches/mm
Inches/mm
Inches/mm
Inches/mm
Inches/mm
2.26/32.0
0.457/11.6
0.86/21.85
0.169/4.3
0.629/16.0
Page 2 of 2
Rev. X4VH
- CTS Electronic Components - www.ctscorp.com - 4800 Alameda Blvd. NE – Albuquerque, NM 87113-
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