TIDA-00725

Wide Bandwidth Optical Front-end Reference Design

TIDA-00725

Design files

Overview

This reference design implements and measures a complete 120MHz wide bandwidth optical front end comprising a high speed transimpedance amplifier, fully differential amplifier, and high speed 14-bit 160MSPS ADC with JESD204B interface.  Hardware and software are provided to evaluate the performance of the system in response to high speed optical pulses generated from the included laser driver and diode for applications including optical time domain reflectrometry (OTDR).

Features

 

  • Optical front-end design with demonstrated system performance
  • High-speed signal path with >120MHz of bandwidth
  • High-speed transimpedance amplifier for I-to-V conversion followed by a fully-differential amplifier driving a high-speed 14-bit ADC
  • Ultra-fast laser-diode driver and laser diode to generate Tx signal
  • Avalanche photo-diode (APD) front-end with on-board high-voltage supply
  • Flexibility to easily change components in the optical, amplifier or data-converter signal-path

 

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.

TIDUAZ1.PDF (4180 K)

Reference design overview and verified performance test data

TIDRIS7.PDF (33 K)

Detailed schematic diagram for design layout and components

TIDRIS8.PDF (160 K)

Detailed schematic diagram for design layout and components

TIDRIS9.PDF (172 K)

Detailed schematic diagram for design layout and components

TIDRIT0.PDF (117 K)

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

TIDRIT1.PDF (123 K)

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

TIDRIT2.PDF (226 K)

Detailed overview of design layout for component placement

TIDRIT3.PDF (134 K)

Detailed overview of design layout for component placement

TIDRIT4.PDF (289 K)

Detailed overview of design layout for component placement

TIDRIT5.PDF (288 K)

Detailed overview of design layout for component placement

TIDRIT6A.ZIP (5407 K)

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

TIDRIT7A.ZIP (5006 K)

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

TIDCBF1A.ZIP (3511 K)

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

TIDCBF2A.ZIP (3446 K)

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

Products

Includes TI products in the design and potential alternatives.

Buck-boost, inverting & split-rail converters (integrated switch)

TPS63050TPS6305x Single Inductor Buck-Boost with 1-A Switches and Adjustable Soft Start

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Direction-controlled voltage translators

SN74LVC1T45Single-Bit Dual-Supply Bus Transceiver with Configurable Voltage-Level Shifting and 3-State Outputs

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Fully differential amplifiers

THS4541High-Speed Differential I/O Amplifier

Data sheet document-pdfAcrobat PDF open-in-new HTML
High-speed ADCs (>10MSPS)

ADC34J45Quad-Channel, 14-Bit, 160-MSPS Analog-to-Digital Converter (ADC)

Data sheet document-pdfAcrobat PDF open-in-new HTML
Linear & low-dropout (LDO) regulators

TPS799200-mA, low-IQ, low-dropout voltage regulator with low-noise & enable

Data sheet document-pdfAcrobat PDF open-in-new HTML
N-channel MOSFETs

CSD18532Q5B60-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 3.2 mOhm

Data sheet document-pdfAcrobat PDF open-in-new HTML
Transimpedance amplifiers

OPA857Ultralow-Noise, Wideband, Pseudo-Differential Output Transimpedance Amplifier

Data sheet document-pdfAcrobat PDF open-in-new HTML
eFuses & hot swap controllers

TPS24005.5-V over voltage protection controller with 100-V input transient protection

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Technical documentation

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* Design guide Optical Front-End System Design Guide Oct. 26, 2015

Related design resources

Hardware development

EVALUATION BOARD
ADC34J45EVM ADC34J45 Quad-Channel, 14-Bit, 160-MSPS Analog-to-Digital Converter Evaluation Module TSW14J56EVM Data capture/pattern generator: data converter EVM with 8 JESD204B lanes from 0.6-12.5Gbps

Software development

SUPPORT SOFTWARE
DATACONVERTERPRO-SW High-speed data converter pro software

Support & training

TI E2E™ forums with technical support from TI engineers

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