Data Conversion Analog-to-Digital Converters (ADC) Precision ADCs (Fs < 10Msps)

LTC1740 - 14-Bit, 6Msps, Sampling ADC

Features

  • 6Msps Sample Rate
  • 79dB S/(N + D) and 91dB SFDR at 2.5MHz fIN
  • Single 5V Supply or ±5V Supplies
  • Integral Nonlinearity Error: <1LSB
  • Differential Nonlinearity: < 0.5LSB
  • 80MHz Full-Power Bandwidth Sampling
  • ±2.5V and ±1.25V Bipolar Input Ranges
  • 2.5V Signal Ground Available
  • Out-of-Range Indicator
  • True Differential Inputs with 75dB CMRR
  • Power Dissipation: 245mW
  • 36-Pin SSOP Package (0.209 Inch Width)

Typical Application

LTC1740 Typical Application
LTC1740 Typical Application

Description

The LTC1740 is a 6Msps, 14-bit sampling A/D converter that draws only 245mW from either a single 5V or dual ±5V supplies. This easy-to-use device includes a high dynamic range sample-and-hold and a programmable precision reference.

The LTC1740 has a flexible input circuit that allows differential full-scale input ranges of ±2.5V and ±1.25V with the internal reference, or any full-scale input range up to ±2.5V with an external reference. The input common mode voltage is arbitrary, though a 2.5V reference is provided for single supply applications.

DC specifications include 1LSB typical INL, 0.5LSB typical DNL and no missing codes over temperature. Outstanding AC performance includes 79dB S/(N + D) and 91dB SFDR at an input frequency of 2.5MHz.

The unique differential input sample-and-hold can acquire single-ended or differential input signals up to its 80MHz bandwidth. The 75dB common mode rejection allows users to eliminate ground loops and common mode noise by measuring signals differentially from the source. A separate output logic supply allows direct connection to 3V components.

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
LTC1740CG#PBF SSOP-36 G C 05-08-1640 (G36) Yes
LTC1740CG#TRPBF SSOP-36 G C 05-08-1640 (G36) Yes
LTC1740IG#PBF SSOP-36 G I 05-08-1640 (G36) Yes
LTC1740IG#TRPBF SSOP-36 G I 05-08-1640 (G36) Yes


LTC1740 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
LTC1740CG#PBF SSOP-36 C $19.95 $17.20 Yes
LTC1740CG#TRPBF SSOP-36 C $17.30 Yes
LTC1740IG#PBF SSOP-36 I $23.50 $20.25 Yes
LTC1740IG#TRPBF SSOP-36 I $20.35 Yes
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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 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
DC528A LTC1740CG Demoboard | 14-Bit 6MSPS ADC, Requires DC718 $100.00
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Companion Boards

Part Number Description Price Documentation
DC718C USB Data Acquisition Controller, for PScope Evaluation Kits (<135Mbps) $300.00
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Click here to view our complete list of demo boards

Applications

  • Telecommunications
  • Multiplexed Data Acquisition Systems
  • High Speed Data Acquisition
  • Spectral Analysis
  • Imaging Systems

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Design Tools

Linear Technology provides a variety of custom design simulation tools and device models to allow even novice designers to quickly and easily evaluate circuits using high performance switching regulators, amplifiers, data converters, filters and more. Please visit our Design Tools page to view and download:

  • LTspice - A powerful SPICE simulator, schematic capture and waveform viewer with enhancements and models for easing the simulation of switching regulators
  • LTpowerCAD - A complete power supply selection, synthesis and design tool
  • LTpowerPlay - A development environment supporting Linear Technology's Digital Power System Management (PSM) products
  • PScope & QuikEval - USB-based product demonstration and data acquisition system for use with our ADCs, DACs, and more
  • Linduino - Arduino compatible system for developing and distributing firmware libraries and example code
  • LinearLab Tools - A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards
  • And More!

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