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BD35390FJ-E2 Fiches technique(PDF) 3 Page - Rohm

No de pièce BD35390FJ-E2
Description  Termination Regulator for DDR-SDRAMs
Download  11 Pages
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Fabricant  ROHM [Rohm]
Site Internet  http://www.rohm.com
Logo ROHM - Rohm

BD35390FJ-E2 Fiches technique(HTML) 3 Page - Rohm

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BD35390FJ
Technical Note
3/10
www.rohm.com
2009.10 - Rev.A
© 2009 ROHM Co., Ltd. All rights reserved.
Reference Data
Fig.1 DDR3 (1A→-1A)
(10µsec/div.)
Fig.2 DDR2 (1A→-1A)
(10µsec/div.)
Fig.3 DDR1(1A→-1A)
Fig.4 DDR3 (-1A→1A)
VCC
EN
VDDQ
VTT_IN
VTT
Fig.5 DDR2 (-1A→1A)
Fig.6 DDR1 (-1A→1A)
Fig.7 Input sequence1
Fig.8 Input sequence2
(2sec/div.)
(200µsec/Div.)
Fig.9 Input sequence3
Fig.13 EN soft start
(DDR2)
Fig.14 PGOOD Delay
(Start up-Shut down)
Fig.15 PGOOD Delay
(TSD OFF-TSD ON)
(2sec/div.)
(2sec/div.)
(10µsec/div.)
(10µsec/div.)
(10µsec/div.)
(10µsec/div.)
(10µsec/div.)
(1msec/div.)
(100µsec/div.)
VTT(20mV/div)
ITT(1A/div)
sink
source
VTT(20mV/div)
ITT(1A/div)
sink
source
VTT(20mV/div)
ITT(1A/div)
sink
source
VTT(20mV/div)
ITT(1A/div)
sink
source
VTT(20mV/div)
ITT(1A/div)
sink
source
VCC
EN
VDDQ
VTT_IN
VTT
VCC
EN
VDDQ
VTT_IN
VTT
Fig.10 ITT-VTT(DDR2)
Fig.11 ITT-VTT(DDR1)
Fig.12 ITT-VTT(DDR3)
1050
1000
950
900
850
800
750
1400
1350
1300
1250
1200
1150
1100
900
850
800
750
700
650
600
-2 -1.5 -1 -0.5 0
0.5
1
1.5
2
-2 -1.5 -1 -0.5 0
0.5
1
1.5
2
-2 -1.5 -1 -0.5
0
0.5
1
1.5
2
VTT(20mV/div)
ITT(1A/div)
sink
source
VTT
(0.3V/div)
EN
(1V/div)
EN
(1V/div)
VTTS
(0.3V/div)
PGOOD
(1V/div)
PGOOD
(1V/div.)


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