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Indoor backhaul

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Indoor backhaul

Block diagram

Overview

Our integrated circuits and reference designs help you create microwave indoor backhaul unit (IDU) systems that enable multiband millimeter-wave operation for >10Gbps speeds and sub-1ms latencies. Our RF and microwave ICs, mixers and modulators, and power and clocking technologies allow you to complete your 5G design with confidence.

Design requirements

Modern IDUs require:

  • Network synchronization over packet-based fronthaul interface.
  • High-density power management operating at high ambient temperature.
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Block diagram

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Indoor backhaul

-48V -48V -48V -48V STM-1/4 STM-1/4 STM-1/4 STM-1/4 GE GE BACKHAUL NETWORK BACKHAUL NETWORK E1 E1 COAX (to ODU) COAX(to ODU) Protection Protection Hot swap controller & monitoring Hot swap controller& monitoring Driver Driver FET FET FET FET ORing ORing Isolated -48V DC/DC power supply Isolated -48V DC/DC power supply PWM controller PWM controller High/low side driver High/low side driver FET FET FET FET SyncFET driver SyncFET driver Isolated driver Isolated driver Aux bias supply Aux bias supply Digital isolator Digital isolator Voltage reference Voltage reference V/I sense V/I sense Isolated I2C Isolated I2C 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 12V hot swap & OR 12V hot swap & OR CPU & memory power (SVID & PMBus) CPU & memory power (SVID & PMBus) Multiphase controller Multiphase controller Power stage Power stage Converter Converter DDR termination DDR termination Sequencing & monitoring Sequencing & monitoring Sequencer Sequencer MCU MCU REF REF Comp Comp Logic Logic Reset Reset Monitoring Monitoring Load switch Load switch Backhaul and transport/control Backhaul and transport/control FPGA / ASIC FPGA /ASIC Switch fabric Switch fabric SFP/XFP SFP/XFP SFP/XFP SFP/XFP PHY PHY 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 eFuse eFuse Temp Sense Temp Sense TX modulator / RX demodulator (modem) TX modulator / RX demodulator (modem) Modem ASIC (IQ mod/demod) Modem ASIC(IQ mod/demod) TX modulator TX modulator RX de-mod RX de-mod TX IF TX IF RX IF RX IF I I Q Q I I Q Q DAC DAC ADC ADC Jitter cleaner Jitter cleaner IF cable interface IF cable interface Temp sense Temp sense Clocking Clocking TCXO/OCXO TCXO/OCXO Network synchronizer/ jitter cleaner Network synchronizer/jitter cleaner Clock buffer Clock buffer Communication Communication RS-232 RS-232 USB USB USB current limit switch USB current limit switch ESD ESD RS-232 RS-232

Technical documentation

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Type Title Date
White paper 準備好迎接 5G 世界： 使用技術與硬體需求概論 22 Feb 2019
Application note Glitch free power sequencing with AXC level translators (Rev. A) 20 Sep 2018
White paper Preparing for a 5G world: An overview of the enabling technologies and hardware 17 Dec 2018
Application note Optimizing Layout of the TPS54824 HotRod™ Package for Thermal Performance 16 Nov 2018
Application note JESD204B Multi-Device Synchronization Using LMK0461x 16 Aug 2017
White paper Analog advancements make waves in 5G communications 12 Aug 2016
Application note TI Network Synchronizer Clock Value Adds in Communications and Industrial Applic 12 Apr 2018
Application note Supported synchronization modes for TI network synchronizers (Rev. A) 11 May 2022
White paper TI BAW technology enables ultra-low jitter clocks for high-speed networks 11 May 2022
Application note Low Voltage Translation for SPI, UART, RGMII, JTAG Interfaces (Rev. B) PDF | HTML 11 May 2022
Application note Clocking Optimization for RF Sampling Analog-to-Digital Converters (Rev. A) PDF | HTML 10 May 2022
Application note ITU-T G.8262 Compliance Test Results for the LMK05028 Digital PLL Network 10 Apr 2018
White paper Measuring various types of low-frequency noise in DC/DC switching converters 08 Feb 2018
Application note Clocking High Speed Serial Links with LMK033X8 (Rev. A) 07 Jan 2016
White paper Internally compensated advanced current mode (ACM) (Rev. A) 07 Dec 2018
White paper Direct RF conversion: From vision to reality 05 May 2015

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