LTC1448 - Dual 12-Bit Rail-to-Rail Micropower DAC
Features
- SO-8 Package
- 12-Bit Resolution
- Buffered True Rail-to-Rail Voltage Output
- External Reference Input Can Be Tied to VCC
- Output Swings from 0V to VREF
- 3V and 5V Supply Operation
- Schmitt Trigger on Clock Input Allows Direct Optocoupler Interface
- Power-On Reset Clears DACs to 0V
- 3-Wire Serial Interface
- Maximum DNL Error: 0.5LSB
- Low Cost
Typical Application
Description
The LTC™1448 is a dual rail-to-rail voltage output, 12-bit digital-to-analog converter (DAC). It includes rail-to-rail output buffer amplifiers and an easy-to-use 3-wire serial interface. It is available in 8-pin SO and PDIP packages and provides the smallest footprint of any dual 12-bit DAC. The LTC1448 has an external reference input pin (REF) and its outputs swing from 0V to REF. The REF input can be tied to VCC providing rail-to-rail operation from supplies of 2.7V to 5.5V. (For devices with internal reference see the LTC1446 data sheet.) The LTC1448 dissipates 2.5mW from a 5V supply. The low power supply current and the small SO-8 package make the LTC1448 ideal for battery-powered applications.
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 |
|---|---|---|---|---|---|
| LTC1448CN8#PBF | N-8 | N | C | 05-08-1510 (N8) | Yes |
| LTC1448CS8#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LTC1448CS8#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LTC1448IN8#PBF | N-8 | N | I | 05-08-1510 (N8) | Yes |
| LTC1448IS8#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |
| LTC1448IS8#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |
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 | |
|---|---|---|---|---|---|---|
| LTC1448CN8#PBF | N-8 | C | $8.00 | $6.40 | Yes | |
| LTC1448CS8#PBF | SO-8 | C | $8.10 | $6.50 | Yes | |
| LTC1448CS8#TRPBF | SO-8 | C | $6.56 | Yes | ||
| LTC1448IN8#PBF | N-8 | I | $9.00 | $7.20 | Yes | |
| LTC1448IS8#PBF | SO-8 | I | $9.10 | $7.30 | Yes | |
| LTC1448IS8#TRPBF | SO-8 | I | $7.36 | Yes | ||
| Buy Now • Request Samples | ||||||
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
- Digital Calibration
- Industrial Process Control
- Automatic Test Equipment
- Cellular Telephones
People Who Viewed This Product Also Viewed
- LTC1446 - Dual 12-Bit Rail-to-Rail Micropower DACs in SO-8
- LT3080 - Adjustable 1.1A Single Resistor Low Dropout Regulator
- LT5400 - Quad Matched Resistor Network
- LTC6655 - 0.25ppm Noise, Low Drift Precision References
- LTC2632 - Dual 12-/10-/8-Bit SPI VOUT DACs with 10ppm/°C Reference
- LTC1655 - 16-Bit Rail-to-Rail Micropower DACs in SO-8 Package
- LTC1454 - Dual 12-Bit Rail-to-Rail Micropower DACs
- LT1167 - Single Resistor Gain Programmable, Precision Instrumentation Amplifier
- LT6654 - Precision Wide Supply High Output Drive Low Noise Reference
- LT1028 - Ultra Low Noise Precision High Speed Op Amps
Product Notifications
Please login to your MyLinear account for notifications of datasheet updates, new document releases and LTspice model announcements for your favorite products. If you do not have a MyLinear account you may Sign Up Now.
Forgot your password? Click here.
Need help? Email mylinear@linear.com with questions and comments.
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
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
