RH6105 - Radiation Hardened Micropower Precision, Rail-to-Rail Input Current Sense Amplifier


  • Processed in Compliance with LTC Certified MIL-PRF-38535 Class V Flow*
  • Very Wide, Over-the-Top, Input Common Mode Range
    - Extends 44V Above V– (Independent of V+)
    - Extends –0.3V Below V–
  • Wide Power Supply Range: 2.85V to 36V
  • Input Offset Voltage: 400μV Maximum
  • Gain Accuracy: 1% Maximum
  • Gain Configurable with External Resistors
  • High Impedance Sense Input When Powered Down

Radiation Performance*

  • Total Ionizing Dose (TID) Tolerance, per TM1019.8, MIL-STD-883:
    - 200kRad (Si), per condition A at 50Rads(Si)/sec
    - 50kRad (Si), per condition D at 10mRads(Si)/sec
    - ELDRS Pass 50kRad(Si)
  • Displacement Damage Defect (DDD) up to 1E12 Neutrons/cm2

* Radiation and Qualification completed on the packaging vendor’s assembled unit.

Typical Application

RH6105 Typical Application


The RH6105 is a micropower, precision current sense amplifier with a very wide input common mode range. The RH6105 monitors unidirectional current via the voltage across an external sense resistor. The input common mode range extends from –0.3V to 44V, with respect to the negative supply voltage (V–). This allows the RH6105 to operate as a high side current sense monitor or a low side current sense monitor. It also allows the RH6105 to monitor current on a negative supply voltage, as well as continuously monitor a battery from full charge to depletion. The inputs of RH6105 can withstand differential voltages up to ±44V, which makes it ideal for monitoring a fuse or MOSFET switch.

The RH6105 can operate from an independent power supply of 2.85V to 36V. When V+ is powered down, the sense pins are biased off. This prevents loading of the monitored circuit, irrespective of the sense voltage. The RH6105 is currently available only from MS Kennedy in packaged form.

Third Party Vendor Availability

Linear Technology partners with third party vendors who assemble and test packaged products with LTC RH Dice inside.

For MSK prefix products please click on the Part Number in the table below and scroll down the linked page to find the part number.

Part Number Description  SMD
MSK196RH Rail To Rail Current Sense Amplifier 5962-1322
MSK496RH Quad Rail-To-Rail Current Sense Amplifier  
MSK6000RH Dual High Side Driver with Current Sense  


For complete and up to date package information and drawings, please refer to our packaging page

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Click here to view our complete list of demo boards


  • High Side or Low Side Current Sensing
  • Current Monitoring on Positive or Negative Supply Voltages
  • Battery Monitoring
  • Fuse/MOSFET Monitoring
  • Power Management

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