DS280DF810ABVT datasheet(11/51 Pages) TI1

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DS280DF810

www.ti.com

SNLS538A – SEPTEMBER 2016 – REVISED OCTOBER 2019

Product Folder Links: DS280DF810

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Electrical Characteristics (continued)

Over operating free-air temperature range (unless otherwise noted).

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VSDAT

AC signal detect assert (ON)

threshold level

Minimum input peak-to-peak

amplitude level at device pins

required to assert signal detect.

25.78125 Gbps with PRBS7 pattern

and 20 dB loss channel

196

mVppd

VSDDT

AC signal detect de-assert (OFF)

threshold level

Maximum input peak-to-peak

amplitude level at device pins which

causes signal detect to de-assert.

25.78125 Gbps with PRBS7 pattern

and 20 dB loss channel

147

mVppd

TRANSMITTER OUTPUTS (TXnP, TXnN)

VOD

Output differential voltage amplitude

Measured with c(0)=7 setting

(Reg_0x3D[6:0]=0x07,

Reg_0x3E[6:0]=0x40,

REG_0x3F[6:0]=0x40). Differential

measurement using an 8T pattern

(eight 1 s followed by eight 0 s) at

25.78125 Gbps with TXPn and

TXNn terminated by 50

Ω to GND.

525

mVppd

VOD

Output differential voltage amplitude

Measured with c(0)=31 setting

(Reg_0x3D[6:0]=0x1F,

Reg_0x3E[6:0]=0x40,

REG_0x3F[6:0]=0x40). Differential

measurement using an 8T pattern

(eight 1 s followed by eight 0 s) at

25.78125 Gbps with TXPn and

TXNn terminated by 50

Ω to GND.

1225

mVppd

VODidle

Differential output amplitude with TX

disabled

< 11

mVppd

VODres

Output VOD resolution

Difference in VOD between two

adjacent c(0) settings. Applies to

VOD in the 525 mVppd to 1225

mVppd range [c(0)>4].

< 50

mVppd

Vcm-TX-AC

Common-mode AC output noise

With respect to signal ground.

Measured with PRBS9 data pattern.

Measured with a 33 GHz (-3 dB)

low-pass filter.

6.5

mV, RMS

tr, tf

Output transition time

20%-to-80% rise time and 80%-to-

20% fall time on a clock-like {11111

00000} data pattern at 25.78125

Gbps. Measured for ~800 mVppd

output amplitude and no

equalization: Reg_0x3D=+13,

Reg_0x3E=0, REG_0x3F=0

RLSDD22

Differential output return loss,

SDD22

Between 50 MHz and 5 GHz

<-12

RLSDD22

Differential output return loss,

SDD22

Between 5 GHz and 12.9 GHz

<-9

RLSCD22

Common-mode to differential output

return loss, SCD22

Between 50 MHz and 12.9 GHz

<-22

RLSDC22

Differential-to-common-mode output

return loss, SDC22

Between 50 MHz and 12.9 GHz

<-22

RLSCC22

Common-mode output return loss,

SCC22

Between 50 MHz and 10 GHz

<-9

RLSCC22

Common-mode output return loss,

SCC22

Between 10 GHz and 12.9 GHz

<-9

SMBus ELECTRICAL CHARACTERISTICS (SLAVE MODE)

VIH

Input high level voltage

SDA and SDC

1.75

3.6

VIL

Input low level voltage

SDA and SDC

GND

0.8

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