Analog Devices Inc. LTC6268 & LTC6269 Op Amps

Analog Devices Inc. LTC6268 and LTC6269 Op Amps are Single and Dual 500MHz FET-input Operational Amplifiers, with extremely low input bias current and low input capacitance. The LTC6268 and LTC6269 also feature low input-referred current noise, low, voltage noise, and low distortion. This makes them ideal for for high speed transimpedance amplifiers, CCD output buffers, high-impedance sensor amplifiers, and for driving SAR ADCs (Successive Approximation Register Analog-to-Digital Converters).

The LTC6268 and LTC6269 Op Amps operate on a 3.1V to 5.25V supply and consume 16.5mA per amplifier. A shutdown feature can be used to lower power consumption when the amplifier is not in use.

The LTC6268 Single Op Amp is available in 8-lead SOIC and 6-lead SOT-23 packages. The SOIC package includes two unconnected pins which can be used to create an input pin guard ring to protect against board leakage currents. The LTC6269 Dual Op Amp is available in 8-lead MSOP with exposed pad and 3mm × 3mm 10-lead DFN packages. Both Op Amps are fully specified over the -40°C to 85°C and the -40°C to 125°C temperature ranges.


  • Gain Bandwidth Product: 500MHz
  • -3dB Bandwidth (A = 1): 350MHz
  • Low Input Bias Current
    • ±3fA Typ. Room Temperature
    • 4pA Max at 125°C
  • Current Noise (100kHz): 5.5fA/√Hz
  • Voltage Noise (1MHz): 4.3nV/√Hz
  • Extremely Low CIN 450fF
  • Rail-to-Rail Output
  • Slew Rate: 400V/μs
  • Supply Range: 3.1V to 5.25V
  • Quiescent Current: 16.5mA
  • Input Current (SHDN): ±1mA
  • Output Current (IOUT): 135mA
  • Harmonic Distortion (2VP-P)
    • -100dB at 1MHz
    • -80dB at 10MHz
  • Operating Temperature Range
    • LTC6268I/LTC6269I: -40°C to +85°C
    • LTC6268H/LTC6269H: -40°C to +125°C
  • Package Options
    • LTC6268 (Single)
      • 8-Lead SO-8
      • 6-Lead TSOT-23
    • LTC6269 (Dual)
      • 8-Lead MS8
      • 10-Lead DFN
  • RoHS Compliant


  • Trans-Impedance Amplifiers
  • ADC Drivers
  • CCD Output Buffer
  • High-Impedance Sensor Amplifiers
  • Photomultiplier Tube Post-Amplifier
  • Low IBIAS Circuits


Typical Application Circuit

Application Circuit Diagram - Analog Devices Inc. LTC6268 & LTC6269 Op Amps

Package Options

Mechanical Drawing - Analog Devices Inc. LTC6268 & LTC6269 Op Amps
Published: 2019-05-23 | Updated: 2022-03-11