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Command & data handling (C&DH)

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Block diagram

Command & data handling (C&DH)

Block diagram

Overview

Our integrated circuits and reference designs help you create command and data handling (C&DH) systems complete with schematics, test data and design files.

Design requirements

    Modern C&DH designs require:

  • Highly integrated, point-of-load (POL) solutions for the space market that reduce overall board size required for even the highest power processing boards.
  • Rad-hard POL converter and low dropout (LDO) linear regulator components that drive optimal efficiency, size and power.
  • Integrated, high efficiency solutions for powering memory storage banks.

Block diagram

Find products and reference designs for your system.

Command & data handling (C&DH)

Serial Interface Serial Interface To Propulsion and Attitude Control To Propulsion and Attitude Control Antenna Array AntennaArray To Payload To Payload Solar Panels Solar Panels Bus Power Supply Bus Power Supply PWM Controller PWMController Comparator Comparator Current Sense CurrentSense Reference Reference Point of Load Power Supply Point of Load Power Supply DC-DC Converter DC-DC Converter LDO LDO Load Switch LoadSwitch Digital Processing Digital Processing DSP DSP MCU MCU DDR Termination Regulator DDR Termination Regulator FPGA FPGA DDR Memory DDR Memory Payload Interface Payload Interface CAN CAN SERDES SERDES RS232/RS422/RS485 RS232/RS422/RS485 LVDS/ECL LVDS/ECL Ethernet Ethernet Mass Memory Unit Mass Memory Unit SERDES SERDES NAND NAND SRAM SRAM Telemetry Uplink Telemetry Uplink Filter Filter ADC ADC Filter Filter Mixer Mixer Temp. Sense Temp. Sense Amp Amp LNA LNA Telemetry Downlink Telemetry Downlink Filter Filter AMP AMP DAC DAC Driver Driver Filter Filter Mixer Mixer Temp. Sense Temp.Sense PA PA Clock and Synthesizer Block Clock and Synthesizer Block Clock Sync & Jitter Cleaner Clock Sync & Jitter Cleaner Clock Buf ClockBuf PLL Synth PLLSynth AMP AMP Logic Logic Calibration, Monitor and Control Calibration, Monitor and Control REF REF DAC DAC ADC ADC Clock Buf ClockBuf Temp. Sense Temp.Sense COMP COMP Logic Logic MCU MCU Current Sense CurrentSense AMP AMP

Payload interface

close

Wired signal interface is for communication with other system blocks within the satellite. The wired interface can include Ethernet, RS-485, CAN, which are typically used for control, monitoring and data transfer.

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Interface (5)
RS-485 & RS-422 transceivers
  • THVD9491-SEP—Radiation-tolerant 3V to 5.5V RS-485 transceiver with flexible I/O supply and IEC ESD
    Data sheet: PDF | HTML
  • SN65C1168E-SEP—Radiation hardened RS-422 dual differential drivers and receivers in space Enhanced Plastic
    Data sheet: PDF | HTML
CAN transceivers
  • SN55HVD233-SP—Radiation Hardness Assured (RHA) 3.3V CAN Transceiver with Standby Mode, Loop-back
    Data sheet: PDF | HTML
LVDS, M-LVDS & PECL ICs
Other interfaces
  • TLK2711-SP—Radiation tolerant 1.6 to 2.5-Gbps Class V transceiver
    Data sheet: PDF | HTML
Logic & voltage translation (3)
Direction-controlled voltage translators
  • SN54SLC8T245-SEP—Radiation-tolerant, eight-bit, 0.65-V to 3.3-V, direction-controlled level translator
    Data sheet: PDF | HTML
Inverting buffers & drivers
    Hardware development
    Evaluation board
    • DIGI-ISO-EVM — Universal digital isolator evaluation module
    • DP83561EVM — Space qualified (QMLV-RHA compliant) 10/100/1000 Ethernet PHY evaluation module
    • TLK2711EVM-CVAL — TLK2711EVM-CVAL SerDes Evaluation Module Board

    Technical documentation

    View all 7
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    Type Title Date
    Application note Failure Containment in Spacecraft Point-of-Load Power Supplies 30 Apr 2020
    E-book Radiation Handbook for Electronics (Rev. A) 28 Oct 2020
    Application note TI Space Rated Power Solution for Microsemi® RTG4™ FPGA (Rev. B) PDF | HTML 19 Jan 2023
    Application note Measuring Die Temperature with Remote Diode Sensing in Space 13 Dec 2018
    Selection guide TI Space Products (Rev. J) 10 Jun 2024
    Application note Rad-hardened FDA as Clock Buffer in Communication and Radar Payloads (Rev. A) 05 Aug 2019
    Application note Use of an LDO as a Load Switch for Space Applications 01 Aug 2018

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