TDP142 datasheet(7/36 Pages) TI2

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TDP142

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SLLSEZ1C – SEPTEMBER 2017 – REVISED MAY 2019

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6.7 AC Electrical Characteristics

over operating free-air temperature range (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

DisplayPort Transmitter (OUTDP[3:0]p or OUTDP[3:0]n)

VTX(DIFF-PP)

Transmitter dynamic differential voltage swing range.

1500

mVPP

VTX(RCV-DETECT)

Amount of voltage change allowed during receiver detection

600

VTX(CM-AC-PP-ACTIVE)

Tx AC common-mode voltage active

Max mismatch from Txp + Txn for both

time and amplitude

100

mVPP

VTX(IDLE-DIFF-AC-PP)

AC electrical idle differential peak-to-

peak output voltage

At package pins

VTX(IDLE-DIFF-DC)

DC electrical idle differential output

voltage

At package pins after low pass filter to

remove AC component

RTX(DIFF)

Differential impedance of the driver

120

CAC(COUPLING)

AC coupling capacitor

265

RTX(CM)

Common-mode impedance of the

driver

Measured with respect to AC ground

over

0–500 mV

CTX(PARASITIC)

TX input capacitance for return loss

At package pins, at 2.5GHz

1.25

RLTX(DIFF)

Differential return loss

50 MHz – 1.25 GHz at 90 Ω

-15

2.5 GHz at 90 Ω

-12

RLTX(CM)

Common-mode return loss

50 MHz – 2.5 GHz at 90 Ω

-13

ITX(SHORT)

TX short circuit current

TX± shorted to GND

VTX(DC-CM)

Common-mode voltage bias in the transmitter (DC)

AC Characteristics

Crosstalk

Differential crosstalk between TX and

RX signal pairs

at 2.5 GHz

–30

C(P1dB-LF)

Low frequency 1-dB compression

point

at 100 MHz, 200 mVPP < VID

< 2000 mVPP

1300

mVPP

C(P1dB-HF)

High frequency 1-dB compression

point

at 2.5 GHz, 200 mVPP < VID

< 2000 mVPP

1300

mVPP

fLF

Low frequency cutoff

200 mVPP< VID < 2000 mVPP

kHz

TX output deterministic jitter

200 mVPP < VID < 2000 mVPP, PRBS7,

5 Gbps

0.05

UIpp

200 mVPP < VID < 2000 mVPP, PRBS7,

8.1 Gbps

0.08

UIpp

TX output total jitter

200 mVPP < VID < 2000 mVPP, PRBS7,

5 Gbps

0.08

UIpp

200 mVPP < VID < 2000 mVPP, PRBS7,

8.1 Gbps

0.135

UIpp

DisplayPort Receiver (INDP[3:0]p or INDP[3:0]n)

VID(PP)

Peak-to-peak input differential dynamic voltage range

2000

VIC

Input common mode voltage

C(AC)

AC coupling capacitance

200

EQ(DP)

Receiver equalization

DPEQ[1:0] at 4.05 GHz

Data rate

HBR3

8.1

Gbps

R(ti)

Input termination resistance

100

120

AUXp or AUXn

V(AUXP_DC_CM)

AUX Channel DC common mode

voltage for AUXp

VCC = 3.3 V

0.4

V(AUXN_DC_CM)

AUX Channel DC common mode

voltage for AUXn

VCC = 3.3 V

2.7

3.6

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