LT1677 - Low Noise, Rail-to-Rail Precision Op Amp

Features

  • Rail-to-Rail Input and Output
  • 100% Tested Low Voltage Noise:
    3.2nV/rtHz Typ at 1kHz
    4.5nV/rtHz Max at 1kHz
  • Offset Voltage: 60µV Max
  • Low VOS Drift: 0.2µV/°C Typ
  • Low Input Bias Current: 20nA Max
  • Wide Supply Range: 3V to ±18V
  • High AVOL: 7V/µV Min, RL = 10k
  • High CMRR: 109dB Min
  • High PSRR: 108dB Min
  • Gain Bandwidth Product: 7.2MHz
  • Slew Rate: 2.5V/µs
  • Operating Temperature Range: ?40°C to 85°C

Typical Application

LT1677 Typical Application
LT1677 Typical Application

Description

The LT1677 features the lowest noise performance available for a rail-to-rail operational amplifier: 3.2nV/rtHz wideband noise, 1/f corner frequency of 13Hz and 90nV peak-to-peak 0.1Hz to 10Hz noise. Low noise is combined with outstanding precision: 20µV offset voltage and 0.2µV/°C drift, 130dB common mode and power supply rejection and 7.2MHz gain bandwidth product. The common mode range exceeds the power supply by 100mV.

The voltage gain of the LT1677 is extremely high, 19 million (typical) driving a 10k load.

In the design, processing and testing of the device, particular attention has been paid to the optimization of the entire distribution of several key parameters. Consequently, the specifications have been spectacularly improved compared to competing rail-to-rail amplifiers.

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
LT1677CN8#PBF N-8 N C 05-08-1510 (N8) Yes
LT1677CS8#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1677CS8#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1677IN8#PBF N-8 N I 05-08-1510 (N8) Yes
LT1677IS8#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1677IS8#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes


LT1677 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
LT1677CN8#PBF N-8 C $2.60 $2.15 Yes
LT1677CS8#PBF SO-8 C $2.60 $2.15 Yes
LT1677CS8#TRPBF SO-8 C $2.21 Yes
LT1677IN8#PBF N-8 I $2.80 $2.35 Yes
LT1677IS8#PBF SO-8 I $2.80 $2.35 Yes
LT1677IS8#TRPBF SO-8 I $2.41 Yes
Buy NowRequest Samples
* 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
Buy Now
Click here to view our complete list of demo boards

Applications

  • Low Noise Signal Processing
  • Microvolt Accuracy Threshold Detection
  • Strain Gauge Amplifiers
  • Tape Head Preamplifiers
  • Direct Coupled Audio Gain Stages
  • Infrared Detectors
  • Battery-Powered Microphones

Product Notifications

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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:
LT1677

Technical Support