Features

• 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

Description

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.