SLLSEV9E July   2016  – November 2023 TUSB522P

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics, Power Supply
    6. 6.6 Electrical Characteristics, DC
    7. 6.7 Electrical Characteristics, AC
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Receiver Equalization
      2. 7.3.2 De-Emphasis Control and Output Swing
      3. 7.3.3 Automatic LFPS Detection
    4. 7.4 Device Functional Modes
      1. 7.4.1 Device Configuration
      2. 7.4.2 Power Modes
        1. 7.4.2.1 U0 Mode (Active Power Mode)
        2. 7.4.2.2 U2/U3 (Low Power Mode)
        3. 7.4.2.3 Disconnect Mode - RX Detect
        4. 7.4.2.4 Shutdown Mode
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 ESD Protection
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  11. 10Mechanical, Packaging, and Orderable Information

6.7 Electrical Characteristics, AC

over operating free-air temperature range (unless otherwise noted)
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
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 channel1001200mVpp
V(RX-DC-CM)Common-mode voltage bias in the receiver (DC)0.7V
R(RX-DIFF-DC)Differential input impedance (DC)Present after a GEN1 device is detected on TXP/TXN72120Ω
R(RX-CM-DC)Receiver DC Common Mode impedance1830Ω
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.25kΩ
V(RX-SIGNAL-DET-DIFF-PP)Input Differential peak-to-peak Signal Detect Assert LevelAt 5Gbps, no input channel loss clock pattern85mV
V(RX-IDLE-DET-DIFF-PP)Input Differential peak-to-peak Signal Detect De-assert Level85mV
V(RX-LFPS-DET-DIFF-PP)Low Frequency Periodic Signaling (LFPS) Detect ThresholdBelow the minimum is squelched.100300mV
V(RX-CM-AC-P)Peak RX AC common mode voltageMeasured at package pin150mV
V(detect)Voltage change to allow receiver detectPositive voltage to sense receiver termination600mV
C(RX-PARASITIC)Voltage change to allow receiver detectAt 2.5 GHz0.170.630.99pF
RL(RX-DIFF)Differential Return Loss50 MHz – 1.25 GHz at 90 Ω–19dB
2.5 GHz at 90 Ω–14dB
RL(RX-CM)Common Mode Return Loss50 MHz – 1.25 GHz at 90 Ω–13dB
Differential Transmitter (TXP, TXN)
V(TX-DIFF-PP)Transmitter differential voltage swing (transition-bit)OS Low, 0dB DE0.80.9Vpp
OS High, 0dB DE1.11.2Vpp
V(TX-DIFF-PP-LFPS)LFPS differential voltage swingOS Low, High0.81.2Vpp
V(TX-DE-RATIO)Transmitter differential voltage De-Emphasis ratioDE = Low0dB
DE = Floating–3.5dB
DE = High–6.2dB
V(TX-RCV-DETECT)Amount of voltage change allowed during Receiver Detection600mV
V(TX-CM-IDLE-DELTA)Transmitter idle common-mode voltage change while in U2/U3 and not actively transmitting LFPS–600600mV
V(TX-DC-CM)Common-mode voltage bias in the transmitter (DC)0.7V
V(TX-CM-AC-PP-ACTIVE)Tx AC Common-mode voltage activeMax mismatch from Txp + Txn for both time and amplitude100mVpp
V(TX-IDLE-DIFF-AC-PP)AC Electrical idle differential peak-to-peak output voltageAt package pins010mV
V(TX-IDLE-DIFF-DC)DC Electrical idle differential output voltageAt package pins after low pass filter to remove AC component010mV
V(TX-CM-DC-ACTIVE-IDLE-DELTA)Absolute DC common mode voltage between U1 and U0At package pin200mV
C(TX)TX input capacitance to GNDAt 2.5 GHz1.25pF
R(TX-DIFF)Differential impedance of the driver72120Ω
R(TX-CM)Common-mode impedance of the driverMeasured with respect to AC ground over 0-500 mV1830Ω
I(TX-SHORT)TX short circuit currentTX± shorted to GND60mA
C(TX-PARASITIC)TX input capacitance for return lossPackage Pins0.631.02F
RL(RX-DIFF)Differential Return Loss50 MHz – 1.25 GHz at 90 Ω12dB
1.25 – 2.5 GHz at 90 Ω8dB
RL(RX-CM)Common Mode Return Loss50 MHz – 1.25 GHz at 90 Ω13dB
1.25 –2.5 GHz11dB
AC Characteristic
XtalkDifferential Cross Talk between TX and RX signal PairsAt 2.5 GHz–40dB
V(CM-TX-AC)AC Common-mode voltage swing in active modeWithin U0 and within LFPS100mVpp
V(TX-IDLE-DIFF -AC-PP)Differential voltage swing during electrical idleTested with a high-pass filter010V
RL(TX-DIFF)Differential Return Lossf = 50 MHz - 1.25 GHz12dB
1.25 –2.5 GHz8dB
RL(TX-CM)Common Mode Return Lossf = 50 MHz - 1.25 GHz16dB
1.25 –2.5 GHz13dB
tJTotal JitterMinimum input and output trace at 2.5 GHz, VCC = 3.3 V15ps
V(TX-CM-ΔU1-U0)Absolute delta of DC CM voltage during active and idle states100mV
V(TX-IDLE-DIFF-DC)DC Electrical idle differential output voltageVoltage must be low pass filtered to remove any AC component012mV