1. Products
  2. Amplifiers
  3. Differential Amplifiers and ADC Drivers
  4. Fully Differential Amplifiers
  5. LT1993-4

Data Sheet Rev. B
JP Rev. 0
User Guides
2 View All

Overview

Features and Benefits

  • 900MHz −3dB Bandwidth
  • Fixed Gain of 4V/V (12dB)
  • Low Distortion:
    • 40dBm OIP3, −73dBc HD3 (70MHz 2VP-P)
    • 51dBm OIP3, −94dBc HD3 (10MHz 2VP-P)
  • Low Noise: 14.5dB NF, en = 2.35nV/√Hz (70MHz)
  • Differential Inputs and Outputs
  • Additional Filtered Outputs
  • Adjustable Output Common Mode Voltage
  • DC- or AC-Coupled Operation
  • Minimal Support Circuitry Required
  • Small 0.75mm Tall 16-Lead 3 × 3 QFN Package

Product Details

The LT1993-4 is a low distortion, low noise Differential Amplifier/ADC driver for use in applications from DC to 900MHz. The LT1993-4 has been designed for ease of  use, with minimal support circuitry required. Exceptionally low input-referred noise and low distortion products (with either single-ended or differential inputs) make the LT1993-4 an excellent solution for driving high speed 12-bit and 14-bit ADCs. In addition to the normal unfiltered outputs (+OUT and -OUT), the LT1993-4 has a built-in 175MHz differential lowpass filter and an additional pair of filtered outputs (+OUTFILTERED, -OUTFILTERED) to reduce external filtering components when driving high speed ADCs. The output common mode voltage is easily set via the VOCM pin, eliminating either an output transformer or AC-coupling capacitors in many applications.

The LT1993-4 is designed to meet the demanding requirements of communications transceiver applications. It can be used as a differential ADC driver, a general-purpose differential gain block, or in any other application requiring differential drive. The LT1993-4 can be used in data acquisition systems required to function at frequencies down to DC.

The LT1993-4 operates on a 5V supply and consumes 100mA. It comes in a compact 16-lead 3 × 3 QFN package and operates over a -40°C to 85°C temperature range.

Applications

  • Differential ADC Driver for:
    • Imaging
    • Communications
  • Differential Driver/Receiver
  • Single Ended to Differential Conversion
  • Differential to Single Ended Conversion
  • Level Shifting
  • IF Sampling Receivers
  • SAW Filter Interfacing/Buffering

Product Categories

Comparable Parts Click to see all in Parametric Search

Product Lifecycle icon-not-recommended Not Recommended for New Designs

This designates products ADI does not recommend broadly for new designs.

Evaluation Kits (2)

Documentation & Resources

  • View All (5)
  • Data Sheets (1)
  • Reliability Data (1)
  • User Guides (2)
  • Product Selector Card (1)
    • Document Type

    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.

    LTspice

    Models for the following parts are available in LTspice:

    LT1993-10
    LT1993-2
    LT1993-4

    Sys-Parameters

    Sys-Parameter Models for Keysight Genesys

    Sys-Parameter models contain behavioral parameters, such as P1dB, IP3, gain, noise figure and return loss, which describe nonlinear and linear characteristics of a device.

    Design Tools

    ADIsimRF

    ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.

    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
    LT1993CUD-4#PBF Material Declaration Reliability Data 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
    LT1993CUD-4#TRPBF Material Declaration Reliability Data 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
    LT1993IUD-4#PBF Material Declaration Reliability Data 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
    LT1993IUD-4#TRPBF Material Declaration Reliability Data 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
    Wafer Fabrication Data R512 Reliability Data

    Support & Discussions

    LT1993-4 Contact ADI Technical Support »
    LT1993-4 Ask your question »
    LT1993-4 Contact ADI Technical Support » LT1993-4 Ask your question »

    Sample & Buy


    Ordering FAQs


    See our Ordering FAQs for answers to questions about online orders, payment options and more.

     

    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.

     

    Sampling


    Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.


    Price Table Help

     

    Evaluation Boards

    Pricing displayed is based on 1-piece.

    Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

    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.

    •