LTC1669 - 10-Bit Rail-to-Rail Micropower DAC with I²C Interface
Features
- Micropower 10-Bit DAC in SOT-23
- Low Operating Current: 60µA
- Ultralow Power Shutdown Mode: 12µA
- 2-Wire Serial Interface Compatible with I²C
- Selectable Internal Reference or Ratiometric to VCC
- Maximum DNL Error: 0.75LSB
- 8 User Selectable Addresses (MSOP Package)
- Single 2.7V to 5.5V Operation
- Buffered True Rail-to-Rail Voltage Output
- Power-On Reset
- 1.5V VIL and 2.1V VIH for SDA and SCL
- Small 5-Lead SOT-23 and 8-Lead MSOP Packages
AEC-Q100 data available for specific packages
Typical Application
Description
The LTC1669 is a 10-bit voltage output DAC with true buffered rail-to-rail output voltage capability. It operates from a single supply with a range of 2.7V to 5.5V. The reference for the DAC is selectable between the supply voltage or an internal bandgap reference. Selecting the internal bandgap reference will set the full-scale output voltage range to 2.5V. Selecting the supply as the reference sets the output voltage range to the supply voltage.
The part features a simple 2-wire serial interface compatible with I²C that allows communication between many devices. The internal data registers are double buffered to allow for simultaneous update of several devices at once. The DAC can be put in low current power-down mode for use in power conscious systems.
Power-on reset ensures the DAC output is at 0V when power is initially applied, and all internal registers are cleared. The LTC1669 is pin-for-pin compatible with the LTC1663.
For SMBus-compatible designs, please refer to the
LTC1663.
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 |
|---|---|---|---|---|---|
| LTC1669-1CS5#PBF | SOT-23 | S5 | C | 05-08-1635 | Yes |
| LTC1669-1CS5#TRMPBF | SOT-23 | S5 | C | 05-08-1635 | Yes |
| LTC1669-1CS5#TRPBF | SOT-23 | S5 | C | 05-08-1635 | Yes |
| LTC1669-8CMS8#PBF | MS-8 | MS8 | C | 05-08-1660 | Yes |
| LTC1669-8CMS8#TRPBF | MS-8 | MS8 | C | 05-08-1660 | Yes |
| LTC1669-8IMS8#PBF | MS-8 | MS8 | I | 05-08-1660 | Yes |
| LTC1669-8IMS8#TRPBF | MS-8 | MS8 | I | 05-08-1660 | Yes |
| LTC1669CMS8#PBF | MS-8 | MS8 | C | 05-08-1660 | Yes |
| LTC1669CMS8#TRPBF | MS-8 | MS8 | C | 05-08-1660 | Yes |
| LTC1669CS5#PBF | SOT-23 | S5 | C | 05-08-1635 | Yes |
| LTC1669CS5#TRMPBF | SOT-23 | S5 | C | 05-08-1635 | Yes |
| LTC1669CS5#TRPBF | SOT-23 | S5 | C | 05-08-1635 | Yes |
| LTC1669IMS8#PBF | MS-8 | MS8 | I | 05-08-1660 | Yes |
| LTC1669IMS8#TRPBF | MS-8 | MS8 | I | 05-08-1660 | 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 | |
|---|---|---|---|---|---|---|
| LTC1669-1CS5#PBF | SOT-23 | C | $2.57 | Yes | ||
| LTC1669-1CS5#TRMPBF | SOT-23 | C | $2.57 | $1.82 | Yes | |
| LTC1669-1CS5#TRPBF | SOT-23 | C | $2.57 | $1.80 | Yes | |
| LTC1669-8CMS8#PBF | MS-8 | C | $2.50 | $1.75 | Yes | |
| LTC1669-8CMS8#TRPBF | MS-8 | C | $1.81 | Yes | ||
| LTC1669-8IMS8#PBF | MS-8 | I | $2.95 | $1.95 | Yes | |
| LTC1669-8IMS8#TRPBF | MS-8 | I | $2.01 | Yes | ||
| LTC1669CMS8#PBF | MS-8 | C | $2.50 | $1.75 | Yes | |
| LTC1669CMS8#TRPBF | MS-8 | C | $1.81 | Yes | ||
| LTC1669CS5#PBF | SOT-23 | C | $2.57 | Yes | ||
| LTC1669CS5#TRMPBF | SOT-23 | C | $2.57 | $1.82 | Yes | |
| LTC1669CS5#TRPBF | SOT-23 | C | $2.57 | $1.80 | Yes | |
| LTC1669IMS8#PBF | MS-8 | I | $2.95 | $1.95 | Yes | |
| LTC1669IMS8#TRPBF | MS-8 | I | $2.01 | 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
Designed for Automotive and Transportation Applications
AEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports or to inquire about parts that are not included. For more information, view our Automotive and Transportation page
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LTC1669-8IMS8#PBF | MS-8 | I | $2.95 | $1.95 | Yes | |
| LTC1669-8IMS8#TRPBF | MS-8 | I | $2.01 | Yes | ||
| LTC1669IMS8#PBF | MS-8 | I | $2.95 | $1.95 | Yes | |
| LTC1669IMS8#TRPBF | MS-8 | I | $2.01 | Yes | ||
| Buy Now • Request Samples | ||||||
Applications
- Digital Calibration
- Offset/Gain Adjustment
- Industrial Process Control
- Automatic Test Equipment
- Arbitrary Function Generators
- Battery-Powered Data Conversion Products
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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:
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- And More!
Technical Support
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- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
