2006 CTS Corporation. All rights reserved. Information subject to change.
CTS Electronic Components
Page 1
March 06
www.ctscorp.com
LVPECL Terminators
LVPECL Terminators
Technical
Data Sheet
RoHS Compliant Parts Available
Packaging Information
Suffix
TR7
TR13
Tape Width
24 mm
24mm
Carrier Pitch
8 mm
8 mm
Reel Diameter
7 inch
13 inch
Parts/Reel
1,000 4,000
Part Number Coding
7 inch reel, Add TR7 to part
number, example RT2250B7TR7
13 inch reel, Add TR13 to part
number, example RT2250B7TR13
(Bulk packaging is not available)
Direction of Feed
Typical Application
LVPECL
RECEVERS
LVPECL
DRIVERS
CTS
RT2250
V
CC
V
EE
R1
R2
Features
8 Bit Thevinin Termination Set
Compliant for LVPECL Termination
Excellent High Frequency Performance
Slim BGA Package
1% Resistor Tolerance
Low Channel to Channel Cross Talk
RoHS Compliant Designs Available
Compatible with both lead and lead-
free processes
Ordering Information
Standard
Part No.
R1
R2
Bits Pitch
(mm)
RoHS
Part No.
RT1250B6
*
127 82.5 8
1.27
RT2250B6
*
RT1250B7 127 82.5 8
1.00
RT2250B7
*Indicates available Top Probe-able part numbers.
Refer to the following link for detailed Top Side Probe-able information:
www.ctscorp.com/components/clearone/TopProveClearOne.pdf
Description
These integrated termination networks provide high
performance line termination for LVPECL busses.
Specifically designed shielding inside the package combined
with a ceramic substrate virtually eliminates cross talk
between channels that is common in other termination
networks and resistor arrays.
The BGA packaging has been proven to reduce rework and
improve reliability.
R1
R2
Style G
D
E
F
A
B
C
G
H
1
2
3
V
EE
V
CC
R1
R2
Zo
Zo = 50 Ohms
Thevenin Vtt = 1.3Volts
V
CC
= 3.3 Volts
R1 = 127 Ohms
V
EE
= 0 Volts
R2 = 82.5 Ohms
LVPECL Thevenin Termination
Electrical Specifications
Resistor Tolerance:
1.0%
TCR
200 ppm/
C
Operating Temperature Range
-55
C to +125
C
B6-1.27mm Pitch
B7-1.00mm Pitch
Maximum Resistor Power:
R1
R2
96mw
96mw
60mW
66mW
Maximum Package Power:
1.0 Watt at 70
C
Process Requirements:
Maximum Re-flow Temperature
Per IPC/JEDEC J-STD-020C
2006 CTS Corporation. All rights reserved. Information subject to change.
CTS Electronic Components
Page 2
March 06
www.ctscorp.com
LVPECL Terminators
Complete ClearONE Product, Processing, and Application Information can be found at the following link:
http://www.ctscorp.com/components/clearone.asp
Solder Mask Dia = Pad
Diameter +.15mm (.006 inch)
BGA Routing Scheme
Blind vias to V
EE
reference plane layer
recommended on
every other row as
shown.
Signal Lines -
9 mil trace width
or similar to
achieve
controlled 50
Ohm
transmission line
impedance Zo.
Blind vias to V
CC
reference plane layer
recommended on
every other row as
shown.
Mechanical Diagram
K
P (Pitch)
L
W
H
P (Pitch)
A1 Identifier
RT_250B_
CTS YRWK
D
1.00mm Pitch
L
W
H
P
D
K
mm
8.00
0.15 3.00
0.15 1.19
0.15 1.00
0.25 0.64
0.05 0.50
0.25
RT1250B7
RT2250B7
inch
.315
.006 .118
.006 .047
.006 .039
.010 .025
.002 .020
.010
1.27mm Pitch
L
W
H
P
D
K
mm
10.16
0.15 3.81
0.15 1.32
0.15 1.27
0.25 0.76
0.05 0.64
0.25
RT1250B6
RT2250B6
inch
.400
.006 .150
.006 .052
.006 .050
.010 .030
.002 .025
.010
Recommended Land Pattern
1.00mm Pitch (B7) = 0.51mm/.020 inch (minimum)
1.27mm pitch (B6) = 0.64mm/.025 inch (minimum)
Outline of Substrate
PCB Pad Diameter
For .006" Thick Solder Paste Stencil, Aperture Opening Should
be Equal to the PCB Pad Diameter.
Refer to
www.ctscorp.com/components/clearone.asp
for
additional PCB design information
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