12-Gbps Multi-Channel BERT Board Reference Design


Design files


This reference design is a 12-Gbps low-cost bit error tester (BERT) capable of generating and checking up to 8 channels of pseudo-random binary sequences (PRBS). This validated design is a convenient way to generate multi-channels high speed serial bit streams of up to 12-Gbps, and checking incoming serial bit streams for possble bit errors.  This design can be used as a hand-held BERT useful for evaluating the signal integrity and bit error error performance of a high speed sub-system.

  • Eight Pattern Generation Channels
  • Eight Pattern Checking Channels
  • Optional External Reference Clock Inputs
  • Onboard USB-to-I2C for Easy Device Programming
  • Status Display LEDs
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUBU5.PDF (5775 K)

Reference design overview and verified performance test data

TIDRM97.PDF (2132 K)

Detailed schematic diagram for design layout and components

TIDRM98.PDF (231 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRM99.PDF (122 K)

Detailed overview of design layout for component placement

TIDRMA1.ZIP (5011 K)

Files used for 3D models or 2D drawings of IC components


Design file that contains information on physical board layer of design PCB

TIDRMA0.PDF (3746 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Ethernet retimers, redrivers & mux-buffers

DS125DF16109.8 to 12.5-Gbps 16-channel retimer

Data sheet: PDF | HTML
ESD protection diodes

TPD4E004Quad 1.6-pF, 5.5-V, ±8-kV ESD protection diode with VCC pin for High Speed Interfaces

Data sheet: PDF | HTML
I2C general-purpose I/Os (GPIOs)

TCA6424A24-bit translating 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt, reset & config registers

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS735500-mA, low-IQ, low-dropout voltage regulator with enable

Data sheet: PDF | HTML
MSP430 microcontrollers

MSP430F552925 MHz MCU with 128KB Flash, 8KB SRAM, 12-bit ADC, comparator, DMA, UART/SPI/I2C, USB, HW multiplier

Data sheet: PDF | HTML
RF PLLs & synthesizers

LMX25813.76-GHz wideband frequency synthesizer with integrated VCO

Data sheet: PDF | HTML

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Technical documentation

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Type Title Date
* Design guide 12-Gbps BERT Board Reference Design May 16, 2016
Technical article Eye doctor: Reflections and how to deal with them in high-speed systems PDF | HTML Sep. 08, 2016

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