LTC1446 - Dual 12-Bit Rail-to-Rail Micropower DACs in SO-8


  • Dual DACs with 12-Bit Resolution
  • SO-8 Package
  • Rail-to-Rail Output Amplifiers
  • Internal Reference
  • Maximum DNL Error: 0.5LSB
  • 3V Operation (LTC1446L): Icc = 650µA Typ
  • 5V Operation (LTC1446): Icc = 1000µA Typ
  • Settling Time: 14µs to ±0.5LSB
  • Power-on Reset Clears DACs to 0V
  • 3-Wire Cascadable Serial Interface with 500kHz Update Rate
  • Schmitt Trigger On Input Allows Direct Optocoupler Interface
  • Low Cost

Typical Application

LTC1446 Typical Application
LTC1446 Typical Application


The LTC1446/LTC1446L are dual 12-bit digital-to-analog converters (DACs) available in an SO-8 package. They are complete with a rail-to-rail voltage output amplifier, an internal reference and an easy-to-use 3-wire cascadable serial interface. The LTC1446 has an internal reference and a full-scale output of 4.095V. It operates from a single 4.5V to 5.5V supply. The LTC1446L has an internal reference and a full-scale output of 2.5V. It operates from a single 2.7V to 5.5V supply. The low power supply current makes the LTC1446 family ideal for battery-powered applications. These DACs are available in space saving 8-pin SO and PDIP packages and require no external components for operation.


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
LTC1446CN8#PBF N-8 N C 05-08-1510 (N8) Yes
LTC1446CS8#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LTC1446CS8#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LTC1446IN8#PBF N-8 N I 05-08-1510 (N8) Yes
LTC1446IS8#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LTC1446IS8#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes
LTC1446LCN8#PBF N-8 N C 05-08-1510 (N8) Yes
LTC1446LCS8#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LTC1446LCS8#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LTC1446LIN8#PBF N-8 N I 05-08-1510 (N8) Yes
LTC1446LIS8#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LTC1446LIS8#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes

LTC1446 Package Drawing
LTC1446 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
LTC1446CN8#PBF N-8 C $8.00 $6.40 Yes
LTC1446CS8#PBF SO-8 C $8.10 $6.50 Yes
LTC1446CS8#TRPBF SO-8 C $6.56 Yes
LTC1446IN8#PBF N-8 I $9.00 $7.20 Yes
LTC1446IS8#PBF SO-8 I $9.10 $7.30 Yes
LTC1446IS8#TRPBF SO-8 I $7.36 Yes
LTC1446LCN8#PBF N-8 C $8.85 $7.05 Yes
LTC1446LCS8#PBF SO-8 C $8.90 $7.15 Yes
LTC1446LCS8#TRPBF SO-8 C $7.21 Yes
LTC1446LIN8#PBF N-8 I $9.90 $7.95 Yes
LTC1446LIS8#PBF SO-8 I $10.00 $8.05 Yes
LTC1446LIS8#TRPBF SO-8 I $8.11 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.

Click here to view our complete list of demo boards


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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
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  • PScope & QuikEval - USB-based product demonstration and data acquisition system for use with our ADCs, DACs, and more
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