Signal Conditioning Operational Amplifiers (Op Amps) Precision Amplifiers (Vos < 0.75mV)
Signal Conditioning Operational Amplifiers (Op Amps) Low Noise Amplifiers
 Signal Conditioning Operational Amplifiers (Op Amps) High Speed Amplifiers (GBW > 50MHz)

LT1115 - Ultra-Low Noise, Low Distortion, Audio Op Amp

Features

  • Voltage Noise 1.2nV/ rtHz Max at 1kHz
  • 0.9nV/ rtHz Typ at 1kHz
  • Voltage and Current Noise 100% Tested
  • Gain-Bandwidth Product 40MHz Min
  • Slew Rate 10V/µs Min
  • Voltage Gain 2 Million Min
  • Low THD@10kHz, AV= -10, RL=600ohms 0.002% VO=7VRMS
  • Low IMD, CCIF Method, AV= +10: 0.002%, RL=600ohms ,VO=7VRMS

Typical Application

LT1115 Typical Application
LT1115 Typical Application

Description

The LT®1115 is the lowest noise audio operational amplifier available. This ultralow noise performance (0.9nV/rtHz at 1kHz) is combined with high slew rates (>15V/µs) and very low distortion specifications.

The RIAA circuit shown below using the LT1115 has very low distortion and little deviation from ideal RIAA response (see graph).

Packaging

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
Drawing		 RoHS
LT1115CN8#PBF N-8 N C 05-08-1510 (N8) Yes
LT1115CSW#PBF SW-16 SW C 05-08-1620 (SW16) Yes
LT1115CSW#TRPBF SW-16 SW C 05-08-1620 (SW16) Yes


LT1115 Package Drawing
LT1115 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
(1-99)		 Price
(1k)*		 RoHS
LT1115CN8#PBF N-8 C $3.57 $2.90 Yes
LT1115CSW#PBF SW-16 C $4.67 $3.70 Yes
LT1115CSW#TRPBF SW-16 C $3.76 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.

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.

Part Number Description Price Documentation
DC417B DIP8, MS8, S8, SOT23-6 | Multi-Footprint General Purpose Board for Single Op. Amp $25.00
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Click here to view our complete list of demo boards

Applications

  • High Quality Audio Preamplifiers
  • Low Noise Microphone Preamplifiers
  • Very Low Noise Instrumentation Amplifiers
  • Low Noise Frequency Synthesizers
  • Infrared Detector Amplifiers
  • Hydrophone Amplifiers
  • Low Distortion Oscillators

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Design Tools

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

Models for the following parts are available in LTspice:
LT1115

Technical Support