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Continuous Time Linear Equalizers (CTLEs) for PCIe3 and PCIe4

BSXPCI3EQ and BSXPCI4EQ Datasheet

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Tektronix offers Continuous Time Linear Equalizers (CTLEs) to correct for losses and distortions caused by high frequency transmission lines.

Key performance specifications
  • High correlation to the PCIe3/4 Behavioral CTLE Models
  • Nominal 2 dB insertion loss
  • <10 dB insertion loss
  • DC coupled
  • 23 dBM RF power

Product description

Continuous Time Linear Equalizers (CTLEs) are implemented to correct for losses and distortions caused by high frequency transmission lines. Two different sets of equalizers are offered for PCIe3, 8GT/s (BSXPCI3EQ) and PICe4, 16GT/s (BSXPCI4EQ). Each offering contains two sets of equalizers with two different gain corrections (3 dB and 6 dB).

The CTLEs can improve eye openings due to the trace losses of the PCBs, enabling a higher level of testability of the corresponding data channels.

The equalizers follow the PCIe3/4 specifications for the transfer function given as follows:

BSXPCI3EQ-BSXPCI4EQ-Datasheet-EN_US-9-L

For PCIe3

  • ADC = DC Gain
  • ωp1 = pole 1 = 2π × 2 GHz
  • ωp2 = pole 2 = 2π × 8 GHz

For PCIe4

  • ADC = DC Gain
  • ωp1 = pole 1 = 2π × 4 GHz
  • ωp2 = pole 2 = 2π × 16 GHz

Typical performance BSXPCI3EQ 3 dB


BSXPCI3EQ-BSXPCI4EQ-Datasheet-EN_US-10-L



BSXPCI3EQ-BSXPCI4EQ-Datasheet-EN_US-11-L


Typical performance BSXPCI3EQ 6 dB


BSXPCI3EQ-BSXPCI4EQ-Datasheet-EN_US-12-L



BSXPCI3EQ-BSXPCI4EQ-Datasheet-EN_US-13-L


Typical performance BSXPCI4EQ 3 dB


BSXPCI3EQ-BSXPCI4EQ-Datasheet-EN_US-14-L



BSXPCI3EQ-BSXPCI4EQ-Datasheet-EN_US-15-L


Typical performance BSXPCI4EQ 6 dB


BSXPCI3EQ-BSXPCI4EQ-Datasheet-EN_US-16-L



BSXPCI3EQ-BSXPCI4EQ-Datasheet-EN_US-17-L


Specifications

All specifications are guaranteed unless noted otherwise.

Parameter BSXPCI3EQ BSXPCI4EQ
PCIe3, 3 dB PCIe3, 6 dB PCIe4, 3 dB PCIe4, 6 dB
Attenuation, DC Minimum 4.5 dB 7.5 dB 4.5 dB 7.5 dB
Typical 5 dB 8 dB 5 dB 8 dB
Maximum 5.5 dB 8.5 dB 5.5 dB 8.5 dB
Passband insertion loss PCIe3 (fc=4 GHz)
PCIe4 (fc=8 GHz)
2 dB nominal
2.5 dB maximum
Connector configuration SMA SMA 2.92 mm 2.92 mm
Return loss (see plots) -12 dB, 0 to 8 GHz
-10 dB, 8 to 12 GHz
-12 dB, 0 to 12 GHz
-10 dB, 12 to 20 GHz
Maximum power, CW 23 dBm
Storage temperature Case -25 °C, minimum
+90 °C, maximum
Impedance 50 Ω
Warranty One year, typical
Mechanical dimensions

BSXPCI3EQ-BSXPCI4EQ-Datasheet-EN_US-18-L

Ordering information

Models
BSXPCI3EQ
PCIe3 CLTE 3 dB, 6 dB (2 each) (SMA)
BSXPCI4EQ
PCIe4 CTLE 3 dB, 6 dB (2 each) (2.92mm)