RH1128M - Radiation Hardened Ultralow Noise Precision High Speed Op Amps


  • Voltage Noise
    1.6nV/rt Hz Max. at 1kHz
    0.9nV/rt Hz Typ. at 1kHz
    4.7nV/ rtHz Typ. at 10Hz
  • Gain-Bandwidth Product
    RH1028: 50MHz Min.
    RH1128: 11MHz Min.
  • Slew Rate
    RH1028: 11V/µs Min.
    RH1128: 4.5V/µs Min.
  • Offset Voltage: 80µV Max.
  • Drift with Temperature: 1.0µV/°C Max.
  • Voltage Gain: 5 Million Min.

Radiation Performance

  • Total Ionizing Dose (TID) Tolerance, per TM1019.8, MIL-STD-883:
    - 200kRad (Si), per condition A at 50Rads(Si)/sec

Typical Application

RH1128M Typical Application


The RH1028 (gain of -1 stable) /RH1128 (gain of +1 stable) achieve a new standard of excellence in noise performance with 0.9nV/√Hz 1kHz noise, 1.0nV/√Hz 10Hz noise. This ultralow noise is combined with excellent high speed specifications (gain-bandwidth product is 75MHz for RH1028, 20MHz for RH1128), distortion-free output, and true precision parameters (0.25μV/°C drift, 20μV offset voltage, 25 million voltage gain). Although the RH1028/RH1128 input stage operates at nearly 1mA of collector current to achieve low voltage noise, input bias current is only 50nA.

The RH1028/RH1128’s voltage noise is less than the noise of a 50Ω resistor. Therefore, even in very low source impedance transducer or audio amplifier applications, the RH1028/RH1128’s contribution to total system noise will be negligible.


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

RH1128M Package Drawing

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


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