Features and Benefits
- Guaranteed Offset Voltage 150µV Max
- -55°C to 125°C 500µV Max
- Guaranteed Drift 4µV/°C Max
- Guaranteed Bias Current
- 70°C : 150pA Max
- 125°C : 2.5nA Max
- Guaranteed Slew Rate 12V/µs Min
- Available in 8-Pin PDIP and SO Packages
The LT1055/LT1056 JFET input operational amplifiers combine precision specifications with high speed performance.
For the first time, 16V/µs slew rate and 6.5MHz gain-bandwidth product are simultaneously achieved with offset voltage of typically 50µV, 1.2µV/°C drift, bias currents of 40pA at 70°C and 500pA at 125°C.
The 150µV maximum offset voltage specification is the best available on any JFET input operational amplifier.
The LT1055 and LT1056 are differentiated by their operating currents. The lower power dissipation LT1055 achieves lower bias and offset currents and offset voltage. The additional power dissipation of the LT1056 permits higher slew rate, bandwidth and faster settling time with a slight sacrifice in DC performance.
The voltage-to-frequency converter shown below is one of the many applications which utilize both the precision and high speed of the LT1055/LT1056.
For a JFET input op amp with 23V/µs guaranteed slew rate, refer to the LT1022 data sheet.
- Precision, High Speed Instrumentation
- Logarithmic Amplifiers
- D/A Output Amplifiers
- Photodiode Amplifiers
- Voltage-to-Frequency Converters
- Frequency-to-Voltage Converters
- Fast, Precision Sample-and-Hold
Product Lifecycle 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.
Evaluation Kits (1)
Documentation & Resources
R040 Reliability Data3/26/2018
AN12 - Circuit Techniques for Clock Sources2/5/2013
AN10 - Methods for Measuring Op Amp Settling Time8/15/2012
AN43 - Bridge Circuits7/10/2012
AN18 - Power Gain Stages for Monolithic Amplifiers6/14/2010
DC417B - Demo Manual2/1/2012
DN15 - Noise Calculations in Op Amp Circuits6/28/2016
DN3 - Operational Amplifier Selection Guide for Optimum Noise Performance6/28/2016
DN140 - Updated Operational Amplifier Selection Guide for Optimum Noise Performance7/28/2014
DN6 - Operational Amplifier Selection Guide for Optimum Noise Performance8/20/2007
Consider New Precision Amplifiers for Updated Industrial Equipment Designs9/1/2009 LT Journal
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.
To launch ready-to-run LTspice demonstration circuits for this part:
Step 1: Download and install LTspice on your computer.
Step 2: Click on the link in the section below to download a demonstration circuit.
Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.
Models for the following parts are available in LTspice:
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.
Sample & Buy
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.