AMB0480A5 Integrated Device Technology, AMB0480A5 Datasheet - Page 14
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AMB0480A5
Manufacturer Part Number
AMB0480A5
Description
Advanced Memory Buffer For Fully Buffered Dimm Modules
Manufacturer
Integrated Device Technology
Datasheet
1.AMB0480A5.pdf
(15 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AMB0480A5RJ
Manufacturer:
ANALOGIC
Quantity:
2 980
NOTES:
1. Refer to JEDEC PC2-4200/5300/6400 DDR2 FULLY BUFFERED DIMM DESIGN SPECIFICATIONS, rev 2.0.
2. Component values for the AMB0480 are summarized in the BIAS COMPONENT table.
BIAS COMPONENTS - RECOMMENDED VALUES AMB0480
MISCELLANEOUS BIAS
IDTAMB0480
ADVANCED MEMORY BUFFER FOR FULLY BUFFERED DIMM
Schematic Diagram
R
R
PLL and Channel
V
3
V
1
Miscellaneous
DD
SS
DDR Bias
R
R
4
2
V
HVM
SS
RPLLTSTO
Reference
R
RSA0
RC
RC
FBDRES
RB
RB
C
C
R
R
R
R
R
L
1
2
3
4
1
2
12
12
18
18
Not loaded
Not loaded
Value
825Ω
121Ω
100Ω
825Ω
10μF
10μF
82Ω
82Ω
51Ω
V
0Ω
0Ω
0Ω
0Ω
SS
TESTLO_AC20
TESTLO_AB20
TESTLO_F8
TESTLO_A13
TESTLO_B13
TESTLO_B17
TESTLO_G16
BFUNC
The impedance of the pull up (PRU) and pull down (PRD) on the AMB DDR Outputs is relatedto RB
& RC
RC
A resistor value of 82Ω results in an impedance at a JEDEC nominal value of 15Ω. The user can adjust
these value to optimize the DDR output impedance for a DIMM raw card configuration.
Resistor R must be 0Ω
Inductor L needs to be replaced with a 0Ω resistor
12
12
= RB
as follows:
12
= 5.3125 * Desired Output Impedance
14
AMB0480
Description
SA0
TEST_F9
TEST_A17
TEST_F21
TEST_F22
COMMERCIAL TEMPERATURE RANGE
R
SA0
NC
NC
NC
NC
Gold Finger
SA0
SPD
12