DDR SDRAM Terminator
Technical
Data Sheet
RoHS Compliant Parts Available
Description
This SSTL_2 terminator network provides high performance
resistor termination for SSTL_2 Class I or Class II systems.
Designed with a ceramic substrate, this device minimizes
channel capacitance, a primary cause of reduced system
performance. In addition, the BGA package eases routing
design, saving the designer many hours of printed circuit
layout.
The BGA packaging has been proven to reduce rework and
improve reliability.
Features
•
•
•
•
•
•
•
18 Bit SSTL_2 Termination Sets
Compliant to JEDEC Std. 8-9A
Excellent high frequency performance
Slim BGA Package
1% Resistor Tolerance
Low Channel Capacitance
RoHS Compliant Designs Available
•
Compatible with both lead and lead-free
manufacturing processes
3
4
R1
2
3
2
R1
3
2
R1
R1
A
B
C
D
E
F
G
H
J
R2
1
A
B
C
D
E
F
G
H
J
1
A
B
C
D
E
F
G
H
J
R1
1
Style H
Style F
Style C
Electrical Specifications
Resistor Tolerance:
TCR
Operating Temperature Range
Maximum Resistor Power:
Maximum Package Power:
Process Requirements:
Maximum Re-flow Temperature
±
1.0%
±200ppm/°C
-55°C to +125°C
0.05 Watts at 70°C
1.0 Watts at 70°C
Per IPC/JEDEC J-STD-020C
Typical Application
VTT
Memory
Controller
DIMM
RT2400
VTT
Ordering Information
1.27mm Pitch
1.00mm Pitch
Style R1
Ω
R2
Ω
Array
1.27mm Pitch 1.00mm Pitch
Size
RoHS Part No. RoHS Part No.
Standard Part
Standard
No.
Part No.
RT1400B6*
RT1400B7*
H
50
25
3 x 9 RT2400B6*
RT2400B7*
RT1401B6
RT1401B7
H
25
22
3 x 9 RT2401B6
RT2401B7
RT1402B6*
RT1402B7*
F
50
-
3 x 9 RT2402B6*
RT2402B7*
RT1403B6*
RT1403B7*
F
25
-
3 x 9 RT2403B6*
RT2403B7*
RT1404B6*
RT1404B7*
C
25
-
4 x 9 RT2404B6*
RT2404B7*
RT1405B6*
RT1405B7*
C
22
-
4 x 9 RT2405B6*
RT2405B7*
RT1407B6*
RT1407B7*
F
35
-
3 x 9 RT2407B6*
RT2407B7*
RT1408B6*
RT1408B7*
H
60
25
3 x 9 RT2408B6*
RT2408B7*
RT1430B6
RT1430B7
F
60
-
3 x 9 RT2430B6
RT2430B7
RT1432B6
RT1432B7
F
120
-
3 x 9 RT2432B6
RT2432B7
RT1460B6
RT1460B7
C
50
-
4 x 9 RT2460B6
RT2460B7
RT1463B6*
RT1463B7
C
33
-
4 x 9 RT2463B6*
RT2463B7
RT1465B6
RT1465B7
C
47
-
4 x 9 RT2465B6
RT2465B7
RT1467B6*
RT1467B7*
F
75
-
3 x 9 RT2467B6*
RT2467B7*
RT1468B6*
RT1468B7*
F
150
-
3 x 9 RT2468B6*
RT2468B7*
*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
CTS Electronic Components
www.ctscorp.com
Packaging Information
Suffix
Tape Width
Carrier Pitch
Reel Diameter
Parts/Reel
TR7
24 mm
8 mm
7 inch
1,000
TR13
24mm
8 mm
13 inch
4,000
Part Number Coding
7 inch reel, Add TR7 to part
number, example RT2400B6TR7
13 inch reel, Add TR13 to part
number, example RT2400B6TR13
(Bulk packaging is not available)
Direction of Feed
© 2006 CTS Corporation. All rights reserved. Information subject to change.
Page 1
DDR SDRAM Terminator
July 06
Recommended Land Pattern
Outline of Substrate
BGA Routing Scheme
RT2404B6
1.27 mm Pitch Package
RT2402B6
.010" Trace Width to
VTT Island
.005 Inch
Wide Traces
PCB Pad Diameter
1.00mm Pitch (B7) = 0.51mm/.020 inch (minimum)
1.27mm pitch (B6) = 0.64mm/.025 inch (minimum)
Solder Mask Dia = Pad
Diameter +.15mm (.006 inch)
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
RT2404B7
1.00 mm Pitch Package
RT2402B7
.008" Trace Width to
VTT Island
.005 Inch
Wide Traces
Mechanical Diagrams
L
H
W
RT_40_B_
CTS YRWK
A1 Identifier
P (Pitch)
P (Pitch)
D
K
1.27mm Pitch
mm
Styles
H&F
inch
1.0mm Pitch
mm
Styles
H&F
inch
L
11.43±0.15
.450±.006
L
9.00±0.15
.354±.006
W
3.81±0.15
.150±.006
W
3.00±0.15
.118±.006
H
1.32±0.15
.052±.006
H
1.19±0.15
.047±.006
P
1.27±0.25
.050±.010
P
1.00±0.25
.039±.010
D
0.76±0.05
.030±.002
D
0.64±0.05
.025±.002
K
0.64±0.25
.025±.010
K
0.50±0.25
.020±.010
L
H
W
RT_40_B_
CTS YRWK
P (Pitch)
A1 Identifier
K
P (Pitch)
D
1.27mm Pitch
mm
Style C
inch
1.0mm Pitch
mm
Style C
inch
L
11.43±0.15
.450±.006
L
9.00±0.15
.354±.006
W
5.08±0.15
.200±.006
W
4.00±0.15
.157±.006
H
1.32±0.15
.052±.006
H
1.19±0.15
.047±.006
P
1.27±0.25
.050±.010
P
1.00±0.25
.039±.010
D
0.76±0.05
.030±.002
D
0.64±0.05
.025±.002
K
0.64±0.25
.025±.010
K
0.50±0.25
.020±.010
CTS Electronic Components
www.ctscorp.com
© 2006 CTS Corporation. All rights reserved. Information subject to change.
Page 2
DDR SDRAM Terminator
July 06
Applications
VTT = 0.5V x V
DDQ
SSTL_2 Class I, symmetrically
single parallel terminated output
load, and series resistor.
RS = 25 ohms
1/18 RT2404
SSTL_2
Vout
RT = 50 ohms
1/18 RT2402
VIN
VREF = 0.5V x V
DDQ
VTT = 0.5V x V
DDQ
SSTL_2 Class II, symmetrically
double parallel terminated output
load, and series resistor.
RT2 = 50 ohms
1/18 RT2402
RS = 25 ohms
1/9 RT2400(R2)
SSTL_2
Vout
RT1 = 50 ohms
1/9 RT2400(R1)
DDQ
VTT = 0.5V x V
VIN
VREF = 0.5V x V
DDQ
DDQ
VTT = 0.5V x V
SSTL_2 Class I, symmetrically
double parallel terminated output.
RT = 50 ohms
1/18 RT2402
VIN
SSTL_2
Vout
RT = 50 ohms
1/18 RT2402
DDQ
VTT = 0.5V x V
DDQ
VREF = 0.5V x V
DDR SDRAM SSTL_2
Single End Termination.
ith
Memory Controller
RT2404
D0
DIMM
DIMM
DIMM
DIMM
VTT
RT2402
D15
UDQS
LDQS
VTT
Complete ClearONE Product, Processing, and Application Information can be found at the following link:
http://www.ctscorp.com/components/clearone.asp
This product is covered by one or more of the following U.S. and foreign patents:
US 5,977,863; TW 133,148; US 6,005,777; US 6,194,979; TW 89104035; US 6,097,277; US 6,246,312; US 6,749,775; US 6,577,225; US 6,963,265;
US 6,897,761; US 6,882,266; US 6,946,733; US 6,856,516. Other U.S. and foreign patents pending.
© 2006 CTS Corporation. All rights reserved. Information subject to change.
Page 3
DDR SDRAM Terminator
CTS Electronic Components
www.ctscorp.com
July 06
FPGA/CPLD
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
