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RealTek
RealTek

RTM875N-397 Datasheet

AC Performance Measurement Report


RTM875N-397 Datasheet Preview


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RTM875N-397 AC Performance Measurement Report
Measurement Equipment :
Clock Rise Time / Fall Time Are Measured by Tektronix® 6804B with Single-ended
Probe
- Mainframe with 8.0GHz Bandwidth
- Mainframe with 20GS/s Sampling Rate
- P7240 Active Probe with 4.0GHz Bandwidth (input: 1.0pF / 20K-ohm)
Clock Jitter & Duty Cycle Are Measured by Tektronix® 6804B with Differential Probe
- P7330 Differential Active Probe with 3.5GHz Bandwidth (input: 0.5pF / 100K-ohm)
- Tektronix® Jitter Analysis 3® Jitter Measurement Software
Measurement Environment :
- Test board
Measurement Item :
Differential Clock
- Slew_Rise & Slew_Fall
- Vcross & ΔVcross
- Cycle to Cycle jitter
- Vmax & Vmin
- Duty Cycle
Single-end Clock
- Slew_Rise & Slew_Fall
- Duty Cycle
- Cycle to Cycle jitter
-
Measurement Summary
From the measurement shown as follows, RTM875N-397 works good and meets all CLK Spec.
Measurement Signal:
1.CPU0 CLOCK
4.PCIE6 CLOCK
7.PCI CLOCK
10.Phase jitter
2. CPU1 CLOCK
5.PCIE11 CLOCK
8.USB CLOCK
3.SATA CLOCK
6. DOT96 CLOCK
9. REF CLOCK
Dat
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Measurement Condition
#1 Slew_Rise & Slew_Fall Of Differential Waveform :
Rise and fall slew rate are measured differential waveform between +150mV and
-150mV on the rising and falling edges of the clock.
(Reference CK505 spec page.19 / 20)
#2 Vcross Of Differential Waveform :
Absolute cross point= 0.3 ~0.55 V (Reference CK505 spec page.19 / 20)
#3 ΔVcross Of Differential Waveform :
Absolute ΔVcross <140 mV (Reference CK505 spec page.19 / 20)
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#4 Cycle to Cycle jitter :
Absolute Cycle to Cycle jitter <85 ps
(Reference CK505 spec page.19 / 20 & JEDEC JESD65-A page.13)
#5 Vmax & Vmin :
Vmax < 1.15 V and Vhigh > -0.3V.
Measure the Vmax & Vmin value by using Tektronix Scope “Vmax ” & “Vmin” function.
(Reference CK505 page.18)
#6 Duty Cycle :
Duty cycle specification is between 45 and 55%.
(Reference CK505 page.19)
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#7 Slew_Rise & Slew_Fall Of Single Waveform:
Rise and fall slew rate are measured single waveform between 0.8V and 2.0V on the
rising and falling edges of the clock.
(Reference CK505 spec page.20~22)
#8 Duty Cycle Of Single Waveform :
Duty cycle specification is between 45 and 55%.
(Reference CK505 page.20~23)
#4 Cycle to Cycle jitter :
(Reference CK505 spec page.20~23 & JEDEC JESD65-A page.13)
Datasheet pdf - http://www.DataSheet4U.net/
Page 4
Part Number RTM875N-397
Manufactur RealTek
Description AC Performance Measurement Report
Total Page 13 Pages
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