LTC2641 - 16-/14-/12-Bit VOUT DACs in 3mm × 3mm DFN
Features
- Tiny 3mm × 3mm 8-Pin DFN Package
- Maximum 16-Bit INL Error: ±1LSB over Temperature
- Low 120µA Supply Current
- Guaranteed Monotonic over Temperature
- Low 0.5nV•sec Glitch Impulse
- 2.7V to 5.5V Single Supply Operation
- Fast 1µs Settling Time to 16 Bits
- Unbuffered Voltage Output Directly Drives 60k Loads
- 50MHz SPI™/QSPI™/MICROWIRE™ Compatible
Serial Interface - Power-On Reset Clears DAC Output to Zero Scale (LTC2641) or Midscale (LTC2642)
- Schmitt-Trigger Inputs for Direct Optocoupler Interface
- Asynchronous CLR Pin
- 8-Lead MSOP, 3mm × 3mm DFN, and 8-Lead SO Packages (LTC2641)
- 10-Lead MSOP and 3mm × 3mm DFN Packages
(LTC2642)
AEC-Q100 data available for specific packages
Typical Application
Description
The LTC2641/LTC2642 are families of 16-, 14- and 12-bit unbuffered voltage output DACs. These DACs operate from a single 2.7V to 5.5V supply and are guaranteed monotonic over temperature. The LTC2641A-16/LTC2642A-16 provide 16-bit performance (±1LSB INL and ±1LSB DNL) over temperature. Unbuffered DAC outputs result in low supply current of 120µA and a low offset error of ±1LSB.
Both the LTC2641 and LTC2642 feature a reference input range of 2V to VDD. VOUT swings from 0V to VREF. For bipolar operation, the LTC2642 includes matched scaling resistors for use with an external precision op amp (such as the LT1678), generating a ±VREF output swing at RFB.
The LTC2641/LTC2642 use a simple SPI/MICROWIRE compatible 3-wire serial interface which can be operated at clock rates up to 50MHz and can interface directly with optocouplers for applications requiring isolation. A power-on reset circuit clears the LTC2641’s DAC output to zero scale and the LTC2642’s DAC output to midscale when power is initially applied. A logic low on the CLR pin asynchronously clears the DAC to zero scale (LTC2641) or midscale (LTC2642). These DACs are all specified over the commercial and industrial ranges.
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 |
|---|---|---|---|---|---|
| LTC2641ACDD-16#PBF | 3x3 DFN-8 | DD | C | 05-08-1698 | Yes |
| LTC2641ACDD-16#TRPBF | 3x3 DFN-8 | DD | C | 05-08-1698 | Yes |
| LTC2641ACMS8-16#PBF | MS-8 | MS8 | C | 05-08-1660 | Yes |
| LTC2641ACMS8-16#TRPBF | MS-8 | MS8 | C | 05-08-1660 | Yes |
| LTC2641AIDD-16#PBF | 3x3 DFN-8 | DD | I | 05-08-1698 | Yes |
| LTC2641AIDD-16#TRPBF | 3x3 DFN-8 | DD | I | 05-08-1698 | Yes |
| LTC2641AIMS8-16#PBF | MS-8 | MS8 | I | 05-08-1660 | Yes |
| LTC2641AIMS8-16#TRPBF | MS-8 | MS8 | I | 05-08-1660 | Yes |
| LTC2641CDD-12#PBF | 3x3 DFN-8 | DD | C | 05-08-1698 | Yes |
| LTC2641CDD-12#TRPBF | 3x3 DFN-8 | DD | C | 05-08-1698 | Yes |
| LTC2641CDD-14#PBF | 3x3 DFN-8 | DD | C | 05-08-1698 | Yes |
| LTC2641CDD-14#TRPBF | 3x3 DFN-8 | DD | C | 05-08-1698 | Yes |
| LTC2641CDD-16#PBF | 3x3 DFN-8 | DD | C | 05-08-1698 | Yes |
| LTC2641CDD-16#TRPBF | 3x3 DFN-8 | DD | C | 05-08-1698 | Yes |
| LTC2641CMS8-12#PBF | MS-8 | MS8 | C | 05-08-1660 | Yes |
| LTC2641CMS8-12#TRPBF | MS-8 | MS8 | C | 05-08-1660 | Yes |
| LTC2641CMS8-14#PBF | MS-8 | MS8 | C | 05-08-1660 | Yes |
| LTC2641CMS8-14#TRPBF | MS-8 | MS8 | C | 05-08-1660 | Yes |
| LTC2641CMS8-16#PBF | MS-8 | MS8 | C | 05-08-1660 | Yes |
| LTC2641CMS8-16#TRPBF | MS-8 | MS8 | C | 05-08-1660 | Yes |
| LTC2641IDD-12#PBF | 3x3 DFN-8 | DD | I | 05-08-1698 | Yes |
| LTC2641IDD-12#TRPBF | 3x3 DFN-8 | DD | I | 05-08-1698 | Yes |
| LTC2641IDD-14#PBF | 3x3 DFN-8 | DD | I | 05-08-1698 | Yes |
| LTC2641IDD-14#TRPBF | 3x3 DFN-8 | DD | I | 05-08-1698 | Yes |
| LTC2641IDD-16#PBF | 3x3 DFN-8 | DD | I | 05-08-1698 | Yes |
| LTC2641IDD-16#TRPBF | 3x3 DFN-8 | DD | I | 05-08-1698 | Yes |
| LTC2641IMS8-12#PBF | MS-8 | MS8 | I | 05-08-1660 | Yes |
| LTC2641IMS8-12#TRPBF | MS-8 | MS8 | I | 05-08-1660 | Yes |
| LTC2641IMS8-14#PBF | MS-8 | MS8 | I | 05-08-1660 | Yes |
| LTC2641IMS8-14#TRPBF | MS-8 | MS8 | I | 05-08-1660 | Yes |
| LTC2641IMS8-16#PBF | MS-8 | MS8 | I | 05-08-1660 | Yes |
| LTC2641IMS8-16#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
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 |
|---|---|---|---|
| DC1096B | LTC2642A-16 (LTC2641A-16) 16-bit +/-5V Unbuffered Vout DAC (req DC590B) | $75.00 | |
| Buy Now | |||
Companion Boards
| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC2026C | Linduino One Isolated USB Demo Board: An Arduino- and QuikEval-Compatible Code Development Platform | $75.00 | |
| DC590B | Isolated USB Serial Controller for Linear Technology QuikEval-Compatible Demo Boards | $50.00 | |
| Buy Now | |||
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 | |
|---|---|---|---|---|---|---|
| LTC2641AIMS8-16#PBF | MS-8 | I | $14.14 | $9.90 | Yes | |
| LTC2641AIMS8-16#TRPBF | MS-8 | I | $9.96 | Yes | ||
| LTC2641IMS8-12#PBF | MS-8 | I | $5.18 | $3.54 | Yes | |
| LTC2641IMS8-12#TRPBF | MS-8 | I | $3.60 | Yes | ||
| LTC2641IMS8-14#PBF | MS-8 | I | $9.52 | $6.50 | Yes | |
| LTC2641IMS8-14#TRPBF | MS-8 | I | $6.56 | Yes | ||
| LTC2641IMS8-16#PBF | MS-8 | I | $10.98 | $7.50 | Yes | |
| LTC2641IMS8-16#TRPBF | MS-8 | I | $7.56 | Yes | ||
| Buy Now • Request Samples | ||||||
Applications
- High Resolution Offset and Gain Adjustment
- Process Control and Industrial Automation
- Automatic Test Equipment
- Data Aquisition Systems
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Design Tools
LTspice
LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice
Models for the following parts are available in LTspice:
LTC2641-12
LTC2641-14
LTC2641-16
LTC2641A-16
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.
