Dual Per-Pin Parametric Measurement Units

Please check latest availability status for a specific part variant.


The MAX9949/MAX9950 dual parametric measurement units (PMUs) feature a small package size, wide force and measurement range, and high accuracy, making the devices ideal for automatic test equipment (ATE) and other instrumentation that requires a PMU per pin or per site.

The MAX9949/MAX9950 force or measure voltages in the -2V to +7V through -7V to +13V ranges, dependent upon the supply voltage (VCC and VEE). The devices handle supply voltages of up to +30V (VCC to VEE) and a 20V device under test (DUT) voltage swing at full current. The MAX9949/MAX9950 also force or measure currents up to ±25mA with a lowest full-scale range of ±2µA. Integrated support circuitry facilitates use of an external buffer amplifier for current ranges greater than ±25mA.

A voltage proportional to the measured output voltage or current is provided at the MSR_ output. Integrated comparators, with externally set voltage thresholds, provide detection for both voltage and current levels. The MSR_ and comparator outputs can be placed in a high-impedance state. Integrated voltage clamps limit the force output to levels set externally. The force-current or the measure-current voltage can be offset -0.2V to +4.4V (IOS). This feature allows for the centering of the control or measured signal within the external DAC or ADC range.

The MAX9949D/MAX9950D feature an integrated 10kΩ force-sense resistor between FORCE_ and SENSE_. The MAX9949F/MAX9950F have no internal force-sense resistor. These devices are available in a 64-pin 10mm x 10mm, 0.5mm pitch TQFP package with an exposed 8mm x 8mm die pad on the top (MAX9949) or the bottom (MAX9950) of the package for efficient heat removal. The exposed paddle is internally connected to VEE. The MAX9949/MAX9950 are specified over the commercial (0°C to +70°C) temperature range.
MAX9949: Pin Configuration MAX9949: Pin Configuration Enlarge+

Key Features

  • Force Voltage/Measure Current (FVMI)
  • Force Current/Measure Voltage (FIMV)
  • Force Voltage/Measure Voltage (FVMV)
  • Force Current/Measure Current (FIMI)
  • Force Nothing/Measure Voltage (FNMV)
  • Five Programmable Current Ranges
    • ±2µA
    • ±20µA
    • ±200µA
    • ±2mA
    • ±25mA
  • -2V to +7V Through -7V to +13V Input Voltage Range and Higher (Up to 20V Voltage Swing at Full Current)
  • Force-Current/Measure-Current Voltage Offset (IOS)
  • Programmable Voltage Clamps for the Force Output
  • Low-Leakage, High-Z Measure State
  • 3-Wire Serial Interface
  • Low Power, 8mA (max) per PMU


  • Memory Testers
  • Structural Testers
  • System-on-a-Chip Testers
  • VLSI Testers
Request Reliability Report for: MAX9949 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >


Related Resources

30ns, Low-Power, 3V/5V, Rail-to-Rail Single-Supply Comparator

  • Fast, 30ns Propagation Delay (10mV Overdrive)
  • Low-Power 100μA Supply Current (VDD = 3V)
  • Optimized for 3V and 5V Applications

1V, Low-Power, Precision Operational Amplifier

  • Supply Voltage Range: 0.9V to 3.6V
  • Low 25.5µA Quiescent Current
  • Very Low 1μV (typ) Input Offset Voltage

High-Speed Quad Driver with Integrated DACs, Cable-Droop Compensation, Slew-Rate Control, and VHH Fourth-Level Drive

  • Low Power at High-Speed Maximizes Driver Performance
    • 700mW per Channel
    • 2.57Gbps at +1V Programmed
    • 280ps Typical Rise/Fall Times at +2V (20% to 80%)
  • Integrated Functionality Provides Value-Added Features
    • Programmable Double Time Constant Cable-Droop Compensation
    • Digital Slew-Rate Control for EMI Sensitive Applications
    • Adjustable Output Resistance with 360mΩ Resolution

  • MAX40662
    Quad Transimpedance Amplifier with Input Current Clamp and Multiplexer for LiDAR

    • AEC-Q100
    • Enables ASIL Compliance (FMEDA Available Upon Request)
    • Internal Multiplexer

    Dual 280ps High-Speed Comparator, Ultra-Low Dispersion with LVDS Outputs

    • Fast Propagation Delay: 280ps, Typ
    • Low Overdrive Dispersion: 25ps (VOD = 10mV to 1V)
    • Supply Voltage 2.7V to 3.6V