TUSB522PRGET.A datasheet(7/26 Pages) TI2

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6.7 Electrical Characteristics, AC

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

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Differential Receiver (RXP, RXN)

V(RX-DIFF-PP)

Input differential voltage swing.

AC-coupled differential peak-to-peak

signal measured post CTLE through a

reference channel

100

1200

mVpp

V(RX-DC-CM)

Common-mode voltage bias in the

receiver (DC)

0.7

R(RX-DIFF-DC)

Differential input impedance (DC)

Present after a GEN1 device is

detected on TXP/TXN

120

R(RX-CM-DC)

Receiver DC Common Mode

impedance

Z(RX-HIGH-IMP-DC-POS)

Common-mode input impedance with

termination disabled (DC)

Present when no GEN1 device is

detected on TXP/TXN. Measured over

the range of 0-500 mV with respect to

GND.

kΩ

V(RX-SIGNAL-DET-DIFF-PP)

Input Differential peak-to-peak Signal

Detect Assert Level

At 5Gbps, no input channel loss clock

pattern

V(RX-IDLE-DET-DIFF-PP)

Input Differential peak-to-peak Signal

Detect De-assert Level

V(RX-LFPS-DET-DIFF-PP)

Low Frequency Periodic Signaling

(LFPS) Detect Threshold

Below the minimum is squelched.

100

300

V(RX-CM-AC-P)

Peak RX AC common mode voltage

Measured at package pin

150

V(detect)

Voltage change to allow receiver detect

Positive voltage to sense receiver

termination

600

C(RX-PARASITIC)

Voltage change to allow receiver detect At 2.5 GHz

0.17

0.63

0.99

RL(RX-DIFF)

Differential Return Loss

50 MHz – 1.25 GHz at 90 Ω

–19

2.5 GHz at 90 Ω

–14

RL(RX-CM)

Common Mode Return Loss

50 MHz – 1.25 GHz at 90 Ω

–13

Differential Transmitter (TXP, TXN)

V(TX-DIFF-PP)

Transmitter differential voltage swing

(transition-bit)

OS Low, 0dB DE

0.8

0.9

Vpp

OS High, 0dB DE

1.1

1.2

Vpp

V(TX-DIFF-PP-LFPS)

LFPS differential voltage swing

OS Low, High

0.8

1.2

Vpp

V(TX-DE-RATIO)

Transmitter differential voltage De-

Emphasis ratio

DE = Low

DE = Floating

–3.5

DE = High

–6.2

V(TX-RCV-DETECT)

Amount of voltage change allowed

during Receiver Detection

600

V(TX-CM-IDLE-DELTA)

Transmitter idle common-mode voltage

change while in U2/U3 and not actively

transmitting LFPS

–600

600

V(TX-DC-CM)

Common-mode voltage bias in the

transmitter (DC)

0.7

V(TX-CM-AC-PP-ACTIVE)

Tx AC Common-mode voltage active

Max mismatch from Txp + Txn for both

time and amplitude

100

mVpp

V(TX-IDLE-DIFF-AC-PP)

AC Electrical idle differential peak-to-

peak output voltage

At package pins

V(TX-IDLE-DIFF-DC)

DC Electrical idle differential output

voltage

At package pins after low pass filter to

remove AC component

V(TX-CM-DC-ACTIVE-IDLE-

DELTA)

Absolute DC common mode voltage

between U1 and U0

At package pin

200

C(TX)

TX input capacitance to GND

At 2.5 GHz

1.25

R(TX-DIFF)

Differential impedance of the driver

120

R(TX-CM)

Common-mode impedance of the

driver

Measured with respect to AC ground

over 0-500 mV

I(TX-SHORT)

TX short circuit current

TX± shorted to GND

C(TX-PARASITIC)

TX input capacitance for return loss

Package Pins

0.63

1.02

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TUSB522P

SLLSEV9E – JULY 2016 – REVISED NOVEMBER 2023

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