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Source measurement unit (SMU)

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Block diagram

Source measurement unit (SMU)

Block diagram

Overview

Our integrated circuits and reference designs help to create high precision source measurement units (SMU) for accurate testing and characterization of semiconductors or other devices.

Design requirements

New generation source measurement units require:

  • High voltage, current source and measurement capabilities.
  • High accuracy force and measurement capabilities with wide dynamic range.
  • Intuitive interface to adjust parameters and monitor agent usage.
  • Pulse mode support to eliminate device self-heating.
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Block diagram

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Source measurement unit (SMU)

DUT (Device under test) DUT(Device under test) Force Hi Force Hi Sense Hi Sense Hi Force low Force low Sense low Sense low Shield Shield Shield Shield Shield Shield Shield Shield Power management Power management EMI filter and rectifier EMI filter and rectifier User interface (HMI) User interface (HMI) Peripheral interface Peripheral interface To force and sense shields To force and sense shields Memory Memory DDR/SDRAM DDR/SDRAM DDR power DDR power DDR MUX DDR MUX BLE BLE Wi-Fi Wi-Fi Wireless interface Wireless interface Guard buffer Guardbuffer Guard driver Guarddriver Current monitor Currentmonitor INA INA Pwr amp Pwramp Force driver Forcedriver ⎎ ⎎ Fault detect Fault detect Load switch Loadswitch Force Force Force DAC Force DAC Comp DAC Comp DAC Control processor Control processor uC or FPGA uC orFPGA Sense amplifier Sense amplifier Prec. Amp Prec.Amp Driving amplifier Driving amplifier ADC Driver ADCDriver ADC Driver ADCDriver Sense Sense Current ADC Current ADC Voltage ADC Voltage ADC Voltage reference Voltage reference Precision reference Precision reference Clock and timing Clock and timing Clock generator Clock generator Clock synthesizer Clock synthesizer Clock buffer Clock buffer SerDes SerDes LVDS LVDS LED driver LED driver Backlight Backlight RGBW RGBW Input interface Input interface Touch screen controller Touch screen controller Capacitive touch Capacitivetouch Inductive touch Inductivetouch Voltage translator Voltage translator I2C controller I2C controller Logic Logic System interface System interface Interface isolation Interface isolation Digital isolator Digital isolator Ethernet Ethernet Ethernet PHY EthernetPHY Serial Serial RS-232 RS-232 RS-485 RS-422 RS-485RS-422 USB interface USBinterface XCVR XCVR Hub Hub Interface protection Interface protection ESD ESD ESD ESD TVS TVS TVS TVS Fan driver Fan driver Peripheral driver Peripheral driver PFC Stage PFC Stage High volt. MOSFET High volt.MOSFET Gate driver Gate driver PFC controller PFCcontroller Isolated power convertor Isolated power convertor Isolated DC/DC power stage Isolated DC/DC power stage Half- bridge driver Half- bridgedriver High volt. MOSFET High volt.MOSFET PWM controller PWM controller Low side switch Low side switch Power supply supervisor Power supply supervisor Voltage supervisor Voltage supervisor Current sensing Current sensing Shunt reference Shunt reference Power sequencer Power sequencer Switching supply Switching supply DC/DC boost DC/DCboost DC/DC buck DC/DCbuck Load switch & protection Load switch & protection Load switch Load switch eFuse eFuse Hot swap Hot swap Low-noise supply Low-noisesupply LDO LDO SoC supply SoC supply PMIC PMIC Isolation Isolation Digital isolator Digital isolator Muxing Muxing MUX MUX System processor System processor Processor [Arm® MPU] Processor[Arm® MPU] -- or -- -- or -- ASIC or FPGA ASICorFPGA Temp sensor Temp sensor Temperature monitor Temperaturemonitor

Technical documentation

View all 4
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Type Title Date
Technical article How to design an accurate DC power supply PDF | HTML 26 Jul 2023
Technical article Powering up the performance of sensitive test and measurement systems PDF | HTML 15 Aug 2023
Technical article Optimize the emissions performance in your isolated system PDF | HTML 12 Jun 2023
Technical article How to filter out noise in your DC/DC design PDF | HTML 09 Aug 2023

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