LTC2054

Single Micropower Zero-Drift Operational Amplifiers

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Overview

Features and Benefits

  • Supply Current 150μA (Max per Amplifier)
    Guaranteed from –40°C to 85°C
  • Offset Voltage 3μV (Max, –40°C to 85°C)
  • Offset Voltage Drift 30nV/°C (Max, –40°C to 85°C)
  • Guaranteed Specifications from –55°C to 150°C (LTC2054MP)
  • Common Mode Input Range from V– to V+ – 0.5V
  • Output Swings Rail-to-Rail
  • Voltage Gain: 140dB (Typ)
  • PSRR and CMRR: 130dB (Typ)
  • Input Bias Current: 1pA (Typ, 25°C)
  • Noise: 1.6μVP-P (0.01Hz to 10Hz Typ)
  • Supply Operation:
    • 2.7V to 6V (LTC2054/LTC2055)
    • 2.7V to ±5.5V (LTC2054HV/LTC2055HV)
  • Low Profile (1mm) SOT-23, MS8 and 3mm × 3mm × 0.8mm DFN Packages

Product Details

The LTC2054/LTC2055 are low power, low noise, single/dual, zero-drift operational amplifiers with an extended temperature version (LTC2054MP) that has guaranteed specifications from –55°C to 150°C. They are available in SOT-23 (ThinSOT™) and MS8 packages. For space limited applications, the LTC2055 is also available in a 3mm × 3mm × 0.8mm dual fine pitch leadless package (DFN). They operate from a single 2.7V minimum supply and support ± 5V applications. The current consumption is typically 150μA for the LTC2054 and 130μA/amp for the LTC2055.

The LTC2054/LTC2055, despite their miniature size, feature uncompromising DC performance. The maximum input offset voltage and offset drift are 3.0μV and 30nV/°C over the –40°C to 85°C industrial temperature range. The almost zero DC offset and drift are supported with a power supply rejection ratio (PSRR) and common mode rejection ratio (CMRR) of 130dB (typ).

The input common mode voltage ranges from the negative supply up to typically 0.5V below the positive supply. The open-loop gain is typically 140dB. The LTC2054/LTC2055 also feature a 1.6μVP-P DC to 10Hz noise and a 500kHz gain-bandwidth product.

Applications

  • Thermocouple Amplifiers
  • Electronic Scales
  • Medical Instrumentation
  • Strain Gauge Amplifiers
  • High Resolution Data Acquisition
  • DC Accurate RC Active Filters
  • Low Side Current Sense
  • Battery-Powered Systems

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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 (2)

Documentation

Tools & Simulations

LTspice

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.

LTspice downloads and documentation
LTspice

LTspice Simulations

LTC6090/LTC2054 Demo Circuit - µVolt Preamplifier for a Digital Voltmeter

Models for the following parts are available in LTspice:

LTC2054

Product Recommendations

LTC2054 Companion Parts

Recommended Related Parts

Reference Materials

Product Selector Card (1)

SAR ADC Drivers

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.

LTC2054 Material Declaration
Quality And Reliability
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Support & Discussions

LTC2054 Discussions

RE: Voltage-controlled current source
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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 Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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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.