1. Products
  2. Amplifiers
  3. Operational Amplifiers (Op Amps)
  4. High Output Current Op Amps ≥ 100mA
  5. LT1794


Features and Benefits

  • Exceeds All Requirements For Full Rate, Downstream ADSL Line Drivers
  • ±500mA Minimum Iout
  • ±11.1V Output Swing, VS = ±12V, RL = 100Ω
  • ±10.9V Output Swing, VS = ±12V, IL = 250mA
  • Low Distortion: –82dBc at 1MHz, 2Vp-p Into 100Ω
  • Power Saving Adjustable Supply Current
  • Power Enhanced Small Footprint Packages:
    20-Lead TSSOP and 20-Lead SW
  • 200MHz Gain Bandwidth
  • 500V/µs Slew Rate
  • Specified at ±15V, ±12V and ±5V

Product Details

The LT1794 is a 500mA minimum output current, dual op amp with outstanding distortion performance. The amplifiers are gain-of-ten stable, but can be easily compensated for lower gains. The extended output swing allows for lower supply rails to reduce system power. Supply current is set with an external resistor to optimize power dissipation. The LT1794 features balanced, high impedance inputs with low input bias current and input offset voltage. Active termination is easily implemented for further system power reduction. Short-circuit protection and thermal shutdown insure the device’s ruggedness.

The outputs drive a 100Ω load to ±11.1V with ±12V supplies, and ±10.9V with a 250mA load. The LT1794, with its increased swing on lower supplies, can be used to upgrade LT1795 line driver applications.

The LT1794 is available in the very small, thermally enhanced, 20-lead TSSOP for maximum port density in line driver applications. The 20-lead SW is also available.


  • High Density ADSL Central Office Line Drivers
  • High Efficiency ADSL, HDSL2, G.lite, SHDSL Line Drivers
  • Buffers
  • Test Equipment Amplifiers
  • Cable Drivers

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Tools & Simulations


LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.


Models for the following parts are available in LTspice:


Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
LT1794CFE#PBF Material Declaration Reliability Data 20-Lead TSSOP w/ EP
LT1794CFE#TRPBF Material Declaration Reliability Data 20-Lead TSSOP w/ EP
LT1794CSW#PBF Material Declaration Reliability Data 20-Lead SOIC (Wide 0.3 Inch)
LT1794CSW#TRPBF Material Declaration Reliability Data 20-Lead SOIC (Wide 0.3 Inch)
LT1794IFE#PBF Material Declaration Reliability Data 20-Lead TSSOP w/ EP
LT1794IFE#TRPBF Material Declaration Reliability Data 20-Lead TSSOP w/ EP
LT1794ISW#PBF Material Declaration Reliability Data 20-Lead SOIC (Wide 0.3 Inch)
LT1794ISW#TRPBF Material Declaration Reliability Data 20-Lead SOIC (Wide 0.3 Inch)
Wafer Fabrication Data R412 Reliability Data

PCN-PDN Information

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Sample & Buy

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Buy Now Pricing

(**) Displayed Buy Now Price and Price Range is based on small quantity orders.


List Pricing

(*)The 1Ku 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 Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

Please see the latest communication from our CCO regarding lead times.



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