Overview

Features and Benefits

  • 800MHz –3dB Bandwidth
  • Fixed Gain of 2V/V (6dB)
  • Low Distortion:
    • 38dBm OIP3, –70dBc HD3 (70MHz, 2VP-P)
    • 51dBm OIP3, –94dBc HD3 (10MHz, 2VP-P)
  • Low Noise: 12.3dB NF, en = 3.8nV/√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 LT1993-2 is a low distortion, low noise Differential Amplifier/ADC driver for use in applications from DC to 800MHz. The LT1993-2 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 LT1993-2 an excellent solution for driving high speed 12-bit and 14-bit ADCs. In addition to the normal unfi ltered outputs (+OUT and –OUT), the LT1993-2 has a built-in 175MHz differential low pass 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 LT1993-2 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 LT1993-2 can be used in data acquisition systems required to function at frequencies down to DC.

The LT1993-2 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 Lifecycle icon-recommended 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 (4)

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

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.

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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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Evaluation Boards Pricing displayed is based on 1-piece.
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.