9DB1200CGLF Datasheet 9DB1200CGLFT, 9DB1200CGLF | P7-P9

IDT

Twelve Output Differential Buffer for PCIe Gen1/Gen2, QPI, and FBDIMM

9DB1200C

Twelve Output Differential Buffer for PCIe Gen1/Gen2, QPI, and FBDIMM

1414G—08/15/12

Electrical Characteristics - Phase Jitter

PARAMETER SYMBOL CONDITIONS MIN TYP. MAX UNITS

NOTES

PCIe Gen 1 REFCLK phase jitter

(including PLL BW 8 - 16 MHz,

= 0.54,

Td=10 ns

Ftrk=1.5 MHz

)

35 86 ps 1,2,3

PCIe Gen 2 REFCLK phase jitter

(including PLL BW 8 - 16 MHz,

= 0.54, Td=12 ns)

Lo-band content

(

10kHz to 1.5MHz

)

1.1 3 ps rms 1,2

PCIe Gen 2 REFCLK phase jitter

(including PLL BW 8 - 16 MHz,

= 0.54, Td=12 ns)

Hi-band content

(

1.5MHz to N

uist

)

2.3 3.1 ps rms 1,2

QPI s

ecs REFCLK

hase

itte

0.25 0.5

s rms 2,4

Notes on Phase Jitter:

Device driven b

932S421BGLF or e

uivalent

BER of 1E-9

Measured at 133MHz usin

CSI_133_MHZ_6_4BG_12UI tem

late in Intel su

lied Clock Jitter Tool.

tjphaseJitter, Phase

See http://www.pcisig.com for complete specs. Guaranteed by design and characterization, not tested in production.

IDT

Twelve Output Differential Buffer for PCIe Gen1/Gen2, QPI, and FBDIMM

9DB1200C

Twelve Output Differential Buffer for PCIe Gen1/Gen2, QPI, and FBDIMM

1414G—08/15/12

Common Recommendations for Differential Routing Dimension or Value Unit Figure

L1 length, route as non-coupled 50ohm trace 0.5 max inch 1

L2 length, route as non-coupled 50ohm trace 0.2 max inch 1

L3 length, route as non-coupled 50ohm trace 0.2 max inch 1

Rs 33 ohm 1

Rt 49.9 ohm 1

Down Device Differential Routing

L4 length, route as coupled microstrip 100ohm differential trace 2 min to 16 max inch 1

L4 length, route as coupled stripline 100ohm differential trace 1.8 min to 14.4 max inch 1

Differential Routing to PCI Express Connector

L4 length, route as coupled microstrip 100ohm differential trace 0.25 to 14 max inch 2

L4 length, route as coupled stripline 100ohm differential trace 0.225 min to 12.6 max inch 2

DIF Reference Clock

HCSL Output Buffer

L1'

L2'

L4'

L3L3'

Rt Rt

PCI Express

Down Device

REF_CLK Input

Figure 1: Down Device Routing

HCSL Output Buffer

L1'

L2'

L4'

L3L3'

Rt Rt

PCI Express

Add-in Board

REF_CLK Input

Figure 2: PCI Express Connector Routing

IDT

Twelve Output Differential Buffer for PCIe Gen1/Gen2, QPI, and FBDIMM

9DB1200C

Twelve Output Differential Buffer for PCIe Gen1/Gen2, QPI, and FBDIMM

1414G—08/15/12

Vdiff Vp-p Vcm R1 R2 R3 R4 Note

0.45v 0.22v 1.08 33 150 100 100

0.58 0.28 0.6 33 78.7 137 100

0.80 0.40 0.6 33 78.7 none 100 ICS874003i-02 input compatible

0.60 0.3 1.2 33 174 140 100 Standard LVDS

R1a = R1b = R1

R2a = R2b = R2

Alternative Termination for LVDS and other Common Differential Signals (figure 3)

HCSL Output Buffer

L1'

R1b

L2'

R1a

L4'

R2a R2b

Down Device

REF_CLK Input

Figure 3

L3'

R3 R4

PCIe Device

REF_CLK Input

Figure 4

R5a

L4'

3.3 Volts

R5b

R6a R6b

Component Value Note

R5a, R5b 8.2K 5%

R6a, R6b 1K 5%

Cc 0.1 µF

Vcm 0.350 volts

Cable Connected AC Coupled Application (figure 4)

P1-P3 P4-P6 P7-P9 P10-P12 P13-P14

9DB1200CGLF

Mfr. #:

Buy 9DB1200CGLF

Manufacturer:

IDT

Description:

Clock Buffer 12 OUTPUT PCIE GEN2 BUFFER w/QPI

Lifecycle:

New from this manufacturer.

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9DB1200CGLF

9DB1200CGLF

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