Data Conversion Digital-to-Analog Converters (DAC) Voltage Output DACs

LTC1657 - Parallel 16-Bit Rail-to-Rail Micropower DAC

Features

  • 16-Bit Monotonic Over Temperature
  • Deglitched Rail-to-Rail Voltage Output: 8nV·s
  • ICC: 650µA Typ
  • Maximum DNL Error: ±1LSB
  • Settling Time: 20µs to ±1LSB
  • Built-In Reference: 2.048V (LTC1657)
    1.25V (LTC1657L)
  • Internal Power-On Reset to Zero Volts
  • Asynchronous CLR Pin
  • Output Buffer Configurable for Gain of 1 or 2
  • Parallel 16-Bit or 2-Byte Double Buffered Interface
  • Narrow 28-Lead SSOP Package
  • Multiplying Capability

Typical Application

LTC1657 Typical Application
LTC1657 Typical Application

Description

The LTC1657/LTC1657L are complete single supply, rail-to-rail voltage output, 16-bit analog-to-digital converters (DAC) in a 28-pin SSOP or PDIP package. They include a rail-to-rail output buffer amplifier, an internal reference and a double buffered parallel digital interface.

The LTC1657/LTC1657L have separate reference input pins that can be driven by an external reference. The fullscale output can be 1 or 2 times the reference voltage depending on how the X1/X2 pin is connected. The LTC1657 operates from a 4.5V to 5.5V supply and has an onboard 2.048V reference. The LTC1657L operates from a 2.7V to 5.5V supply and has an onboard 1.25V reference.

The LTC1657/LTC1657L are similar to Linear Technology Corporations's LTC1450/LTC1450L 12-bit VOUT DAC family, allowing an upgrade path. They are the only buffered 16-bit parallel DACs in a 28-lead SSOP package and include an onboard reference for stand alone performance.

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
LTC1657CGN#PBF SSOP-28 GN C 05-08-1641 (GN28) Yes
LTC1657CGN#TRPBF SSOP-28 GN C 05-08-1641 (GN28) Yes
LTC1657IGN#PBF SSOP-28 GN I 05-08-1641 (GN28) Yes
LTC1657IGN#TRPBF SSOP-28 GN I 05-08-1641 (GN28) Yes
LTC1657LCGN#PBF SSOP-28 GN C 05-08-1641 (GN28) Yes
LTC1657LCGN#TRPBF SSOP-28 GN C 05-08-1641 (GN28) Yes
LTC1657LIGN#PBF SSOP-28 GN I 05-08-1641 (GN28) Yes
LTC1657LIGN#TRPBF SSOP-28 GN I 05-08-1641 (GN28) Yes


LTC1657 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
LTC1657CGN#PBF SSOP-28 C $10.00 $8.60 Yes
LTC1657CGN#TRPBF SSOP-28 C $8.68 Yes
LTC1657IGN#PBF SSOP-28 I $10.95 $9.40 Yes
LTC1657IGN#TRPBF SSOP-28 I $9.48 Yes
LTC1657LCGN#PBF SSOP-28 C $11.05 $9.50 Yes
LTC1657LCGN#TRPBF SSOP-28 C $9.60 Yes
LTC1657LIGN#PBF SSOP-28 I $12.00 $10.30 Yes
LTC1657LIGN#TRPBF SSOP-28 I $10.40 Yes
Buy Now • Request Samples
* 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.

Click here to view our complete list of demo boards

Applications

  • Instrumentation
  • Digital Calibration
  • Industrial Process Control
  • Automatic Test Equipment
  • Communication Test Equipment

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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!

Technical Support