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Intra-DC interconnect (metro)

Products and reference designs
Block diagram

Intra-DC interconnect (metro)

Block diagram

Overview

Our integrated circuits and reference designs help you create intra-data center (DC) interconnect systems for high-speed optical transport networks with ultra-high bandwidth and low-power consumption. Use the interactive diagram below to design a system that supports the connectivity needs of today's optical networks.

Design requirements

Modern intra-DC interconnect and metro systems require:

  • Precise, low-noise data acquisition.
  • Best-in-class signal integrity.
  • Improved thermal performance and power dissipation techniques.
Explore applications similar in function and design

Block diagram

Find products and reference designs for your system.

Intra-DC interconnect (metro)

IBV IBV AC AC GbE GbE OC-x OC-x FC FC SDI SDI CLIENT INTERFACE CLIENT INTERFACE JTAG JTAG 400G 400G 400G 400G 1+1 PSU 1+1 PSU AC/DC AC/DC -48V -48V POL power (FPGA, ASIC, Merchant Si, clocks, etc.) POL power (FPGA, ASIC, Merchant Si, clocks, etc.) Converter Converter LDO LDO Multiphase Controller Multiphase Controller Power Stage Power Stage Module Module CPU and memory power CPU and memory power Multiphase Controller Multiphase Controller Power Stage Power Stage Converter Converter DDR Termination DDR Termination Buck/Boost Buck/Boost Sequencing and monitoring Sequencing and monitoring Logic Logic Power On Reset Power On Reset Sequencer Sequencer MCU MCU Client side Client side FPGA / ASIC FPGA /ASIC Switch Fabric Switch Fabric SFP/XFP SFP/XFP SFP/XFP SFP/XFP SFP/XFP SFP/XFP SFP/XFP SFP/XFP SFP/XFP SFP/XFP eFuse eFuse PHY PHY Network Synchronizer Network Synchronizer Clock Buffer Clock Buffer Level Shift Level Shift Retimer/Redriver Retimer/Redriver ESD ESD Logic Logic Retimer Retimer I2C/SPI Functions I2C/SPI Functions DDR Memory DDR Memory Processor Processor SPI MUX SPIMUX INA INA Line side (1 ROADM, 2x400G optical connections) Line side (1 ROADM, 2x400G optical connections) LINE INTERFACE (OPTICAL) LINE INTERFACE (OPTICAL) Processor Processor Clock Buffer Clock Buffer Temp Sense Temp Sense MCU MCU Retimer/Redriver Retimer/Redriver ESD ESD Level Shift Level Shift I2C/SPI Functions I2C/SPI Functions DDR Memory DDR Memory OPA OPA OPA OPA INA INA DRV DRV TEC TEC MUX MUX Network Synchronizer Network Synchronizer RF Synthesizer RF Synthesizer FPGA / ASIC / DSP FPGA /ASIC / DSP DAC DAC ADC ADC eFuse eFuse CFP-2 ACO Optical Module (64QAM Modulation) CFP-2 ACO Optical Module(64QAM Modulation) I2C/SPI Functions I2C/SPI Functions CFP-2 ACO Optical Module (64QAM Modulation) CFP-2 ACO Optical Module(64QAM Modulation) Controller card Controller card FPGA / ASIC / CPU FPGA /ASIC / CPU Processor Processor DDR Memory DDR Memory Level Shift Level Shift Logic Logic I2C/SPI Functions I2C/SPI Functions Network Synchronizer Network Synchronizer Clock Buffer Clock Buffer SPI MUX SPIMUX Oscillator Oscillator Fan control Fan control Temp Sense Temp Sense eFuse eFuse Digital Isolator Digital Isolator MCU MCU I2C/SPI Functions I2C/SPI Functions LED driver LED driver LED Driver LED Driver Shift Register Shift Register Logic Logic Front Port Controller Front Port Controller IO (JTAG, RS232, RS485, USB, Bluetooth) IO (JTAG, RS232, RS485, USB, Bluetooth) Buffer Buffer JTAG MUX JTAG MUX RS-232 RS-232 ESD ESD Zigbee/Bluetooth Low Energy Zigbee/Bluetooth Low Energy Current Limit Switch Current Limit Switch ESD ESD USB Signal Conditioner USB Signal Conditioner RS-485 RS-485 Bus converter Bus converter Hot Swap Controller Hot Swap Controller FET FET I2C Digital Isolator I2C Digital Isolator ORing ORing Brick Power Module Brick Power Module

Line side (1 ROADM, 2x400G optical connections)

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In WDM networks, multiple services are aggregated into a single wavelength and then multipled with other wavelengths into the same fiber. The optical industry has standardized on 100G with adoption of a common modulation format (DP-QPSK), common DWDM module (100G MSA), and common encapsulation frame (OTU4). With the introduction of 100G, the industry shifted from very simple modulation techniques (OOK) that transported a single bit of data to much more advanced phase modulation techniques (DP-QPSK) capable of encoding and sending multiple bits at once.

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Data converters (5)
Precision DACs (≤10 MSPS)
  • DAC80516—16-channel 16-bit voltage-output (0-5V) with internal 2.5V reference and 50mA drive capability
    Data sheet: PDF | HTML
  • DAC43701-Q1—Automotive, 8-bit 1-channel VOUT smart DAC with Hi-Z, EEPROM, waveform generator, comparator, GPIO
    Data sheet: PDF | HTML
  • DAC60508—True 12-Bit, 8-channel, SPI, Vout DAC in tiny WCSP package with precision internal reference
    Data sheet: PDF | HTML
  • DAC80508—True 16-bit, 8-channel, SPI, voltage-output DAC with precision internal reference
    Data sheet: PDF | HTML
  • DAC80504—True 16-bit, 4-channel, SPI, voltage-output DAC in QFN package with precision internal reference
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Clocks & timing (6)
Clock buffers
  • LMK1C1104—4-channel output LVCMOS 1.8-V buffer
    Data sheet: PDF | HTML
  • CDCLVC1310—Universal input, 10-output low impedance LVCMOS buffer
    Data sheet: PDF | HTML
  • LMK00105—Ultra-low jitter LVCMOS fanout buffer/level translator with universal input and 5 outputs
    Data sheet: PDF | HTML
  • LMK00304—3.1-GHz differential clock buffer/level translator with 4 configurable outputs
    Data sheet: PDF | HTML
  • LMK1C1102—2-channel output LVCMOS 1.8-V buffer
    Data sheet: PDF | HTML
  • CDCLVP111—1:10 LVPECL buffer with selectable input
    Data sheet: PDF | HTML
Interface (12)
Ethernet retimers, redrivers & mux-buffers
I2C & I3C level shifters, buffers & hubs
  • TCA39306—FM+ I²C bus and SMBus voltage translator
    Data sheet: PDF | HTML
  • TCA4311A—2-bit bidirectional 2.7- to 5.5-V hot swappable 400-kHz I2C/SMBus buffer
    Data sheet: PDF | HTML
  • PCA9306—2-bit bidirectional 400-kHz I2C/SMBus voltage level translator
    Data sheet: PDF | HTML
  • FPC402—Quad Port Controller
    Data sheet: PDF | HTML
  • PCA9515A—2-bit bidirectional 2.3- to 3.6-V 400-kHz I2C/SMBus buffer
    Data sheet: PDF | HTML
  • TCA9406—2-bit bidirectional 1MHz I2C/SMBus voltage level translator with internal pull-up resistor
    Data sheet: PDF | HTML
Amplifiers (21)
Logarithmic amplifiers
  • LOG200—High-speed precision logarithmic amplifier with photodiode bias and dark-current correction
    Data sheet: PDF | HTML
Digital power monitors
  • INA220—26V, 12-bit, i2c output current/voltage/power monitor
    Data sheet: PDF | HTML
  • INA230—36-V, 16-bit, I²C output current, voltage and power monitor with alert
    Data sheet: PDF | HTML
  • INA226—36V, 16-bit, ultra-precise i2c output current/voltage/power monitor w/alert
    Data sheet: PDF | HTML
General-purpose op amps
  • OPA2990—Dual, 40-V, 1.1-MHz, low-power operational amplifier
    Data sheet: PDF | HTML
  • TLV9062—Dual, 5.5-V, 10-MHz operational amplifier
    Data sheet: PDF | HTML
  • OPA2991—Dual, 40-V, 4.5-MHz, low-power operational amplifier
    Data sheet: PDF | HTML
  • TLV6742—Dual, 5.5-V, 10-MHz, low noise (4.6-nV/√Hz) operational amplifier
    Data sheet: PDF | HTML
  • TLV9061—Single, 5.5-V, 10-MHz, RRIO operational amplifier for cost-optimized applications
    Data sheet: PDF | HTML
Comparators
  • TLV9030—Single low-voltage comparator with push-pull output
    Data sheet: PDF | HTML
  • TLV6710—Low power, high voltage window comparator with integrated reference
    Data sheet: PDF | HTML
  • TLV7021—Low power, small size comparator with open-drain output
    Data sheet: PDF | HTML
  • TLV4021—Low-power comparator with reference (non-inverting, open-drain)
    Data sheet: PDF | HTML
  • TLV6713—36V comparator with integrated reference
    Data sheet: PDF | HTML
  • TLV1821—Single-channel micropower high-voltage comparator with open-drain output
    Data sheet: PDF | HTML
Precision op amps (Vos<1mV)
  • OPA3S328—High-speed (40 MHz) high-precision (60 µV) low-noise op amp with integrated gain switches
    Data sheet: PDF | HTML
  • OPA2392—Dual, low-offset (10μV), low-noise (4.4nV/rtHz @10kHz) femtoamp-bias-current e-trim™ op amp
    Data sheet: PDF | HTML
  • LMV841—Single CMOS Input, RRIO, Wide Supply Range Operational Amplifiers
    Data sheet: PDF | HTML
  • OPA2333P—1.8-V, 17-µA, two-channel, micropower zero-drift CMOS operational amplifier with >300-kHz GBW
    Data sheet: PDF | HTML
  • TLV333—Single, 350-kHz, low-noise, RRIO, CMOS operational amplifier for cost-sensitive systems
    Data sheet: PDF | HTML
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Logic & voltage translation (3)
D-type latches
Sensors (6)
Digital temperature sensors
  • TMP451—1.7-V remote and local temperature sensor with N-factor, filtering and series-R correction
    Data sheet: PDF | HTML
  • LM75A—2C industry standard temperature sensor, I2C/SMBus interface
    Data sheet: PDF | HTML
  • LM74—±1.25°C Temperature Sensor with SPI Interface
    Data sheet: PDF | HTML
  • LM75B—±2°C, 3.0V to 5.5V industry standard temperature sensor with I2C/SMBus interface
    Data sheet: PDF | HTML
  • TMP468—±0.75⁰C High-Accuracy Multi-channel Remote and Local Temperature Sensor
    Data sheet: PDF | HTML
  • TMP513—Thermal/Power Management with Triple Remote and Local Temperature Sensor and Current Shunt Monitor
    Data sheet: PDF | HTML
Switches & multiplexers (6)
Analog switches & muxes
  • TMUX7221—44-V, latch-up immune, 1:1 (SPST) 2 channel precision switch with 1.8V Logic (active high)
    Data sheet: PDF | HTML
  • TMUX1574—5-V, 2:1 (SPDT), 4-channel analog switch with powered-off protection & 1.8-V input logic
    Data sheet: PDF | HTML
  • TMUX1136—3-pA on-state leakage current, 5-V, 2:1, 2-channel precision analog switch
    Data sheet: PDF | HTML
  • TMUX1111—3-pA on-state leakage current, 5-V, 1:1 (SPST), 4-channel precision switch (4 active low)
    Data sheet: PDF | HTML
  • TMUX1108—3-pA on-state leakage current, 5-V, ±2.5-V, 8:1, 1-channel precision multiplexer
    Data sheet: PDF | HTML
  • SN74LVC1G3157—5-V, 2:1 (SPDT), 1-channel general-purpose analog switch
    Data sheet: PDF | HTML

    Technical documentation

    View all 11
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    Type Title Date
    Application brief DACx1416 Delivers Optimized Solution to Mach Zehnder Modulator Biasing 29 Jun 2018
    Application note How to use the LMK05318 as a jitter cleaner 27 Feb 2019
    Application note Transimpedance Considerations for High-Speed Operational Amplifiers 20 Nov 2009
    Application note Optimizing Layout of the TPS54824 HotRod™ Package for Thermal Performance 16 Nov 2018
    White paper Overcurrent protection enables more efficient and reliable systems 16 May 2016
    Application note TI Network Synchronizer Clock Value Adds in Communications and Industrial Applic 12 Apr 2018
    Application note Understanding clocking needs for high-speed 56G PAM-4 serial links (Rev. A) 11 May 2022
    Application note Supported synchronization modes for TI network synchronizers (Rev. A) 11 May 2022
    Application brief Enabling SPI-Based Flash Memory Expansion by Using Multiplexers (Rev. B) PDF | HTML 10 May 2022
    Analog Design Journal Understanding thermal-resistance specification of DC/DC convert. w/ MOSFETs 08 Jan 2018
    Application brief High-Density DACs Offer Superior Noise And Accuracy for Laser Drive Applications 02 Oct 2018

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