ADI Multichannel Source Measurement Unit (SMU) Solution


ADI Multichannel Source Measurement Unit (SMU) SolutionA source measure unit (SMU) is widely used in the field of test and measurement. Examples of where it is used include I-V characteristic curve tests for semiconductors, parameter tests for various nonlinear devices or materials, and charge or discharge tests for various types of batteries. SMUs can operate in four quadrants of a V/I coordinate axis and can measure another type of signal while outputting one. The functions that used to be completed by multiple instruments can be now realized by a single SMU. Many well proven SMU products, commonly built with discrete devices, have been put on the market. These SMUs can realize a variety of current /voltage output combinations and accurate measurement, with the disadvantages of a complex structure and high cost. This article introduces an SMU reference design that is composed of an AD5522 master controller plus voltage/current amplifier stage.


Learn more about Analog Devices SMU solutions and main products.


System Block Diagram


Product Type PMU DAC ADC
AD5522 AD5601 AD7606C-18/AD7606
Product Type Reference Amp MUX
ADR431/ ADR435 LTC6090/LTC6090-5
Product Type Power    


Design Resources

Further Reading

  • Application Note AN-1574: Parametric Measurement Unit and Supporting Components for ATE Applications Using the AD5522 PMU and the AD7685 16-Bit ADC
  • MT-034 Tutorial: Current Feedback (CFB) Op Amps
  • MT-057 Tutorial: High Speed Current Feedback Op Amps
  • Design Note DN513: High Voltage CMOS Amplifier Enables High Impedance Sensing with a Single IC
  • User Guide UG-1870: Evaluating the AD7606C-18 8-Channel DAS with 18-Bit, 1 MSPS Bipolar Input, Simultaneous Sampling ADC

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