LTC6091 - Dual 140V, Rail-to-Rail Output, Picoamp Input Current Op Amp


  • Supply Range: ±4.75V to ±70V (140V)
  • 0.1Hz to 10Hz Noise: 3.5μVP-P
  • Input Bias Current: 50pA Maximum
  • Low Offset Voltage: 1.25mV Maximum
  • Low Offset Drift: ±5μV/°C Maximum
  • CMRR: 130dB Minimum
  • Rail-to-Rail Output Stage
  • Output Sink and Source: 50mA
  • 12MHz Gain-Bandwidth Product
  • 21V/μs Slew Rate
  • 11nV/√Hz Noise Density
  • Thermal Shutdown
  • 4mm × 6mm 16-Lead QFN Package

Typical Application

LTC6091 Typical Application
LTC6091 Typical Application


The LTC®6091 is a dual, high voltage precision operational amplifier. The low noise, low bias current input stage is ideal for high gain configurations. The LTC6091 has low input offset voltage, a rail-to-rail output stage, and can be run from a single 140V or split ±70V supplies.

The LTC6091 is internally protected against overtemperture conditions. A thermal warning output, TFLAG, goes active when the die temperature approaches 150°C. The output stage can be turned off with the output disable pin OD. By tying the OD pin to the thermal warning output, the part will disable the output stage when it is out of the safe operating area. These pins easily interface to any logic family.

The LTC6091 is unity-gain stable with up to a 200pF output capacitor. A wide input and output common mode range along with many features makes the LTC6091 useful for many high voltage applications.


CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

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

Part Number Package Code Temp Package
LTC6091HUFE#PBF 4x4 QFN-16 UF H 05-08-1692 Yes
LTC6091HUFE#TRPBF 4x4 QFN-16 UF H 05-08-1692 Yes
LTC6091IUFE#PBF 4x4 QFN-16 UF I 05-08-1692 Yes
LTC6091IUFE#TRPBF 4x4 QFN-16 UF I 05-08-1692 Yes

LTC6091 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

Package Variations and Pricing

Part Number Package Temp Price
LTC6091HUFE#PBF 4x4 QFN-16 H $10.03 $7.21 Yes
LTC6091HUFE#TRPBF 4x4 QFN-16 H $7.27 Yes
LTC6091IUFE#PBF 4x4 QFN-16 I $9.19 $6.61 Yes
LTC6091IUFE#TRPBF 4x4 QFN-16 I $6.67 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

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