LTC1661
PRODUCTIONMicropower Dual 10-Bit DAC in MSOP
- Part Models
- 6
- 1ku List Price
- Starting From $2.33
Part Details
- Tiny: Two 10-Bit DACs in an 8-Lead MSOP—Half the Board Space of an SO-8
- Micropower: 60μA per DAC Sleep Mode: 1μA for Extended Battery Life
- Rail-to-Rail Voltage Outputs Drive 1000pF
- Wide 2.7V to 5.5V Supply Range
- Double Buffered for Independent or Simultaneous DAC Updates
- Reference Range Includes Supply for Ratiometric 0V-to-VCC Output
- Reference Input Has Constant Impedance over All Codes (260kΩ Typ)—Eliminates External Buffers
- 3-Wire Serial Interface with Schmitt Trigger Inputs
- Differential Nonlinearity: ≤±0.75LSB Max
The LTC1661 integrates two accurate, serially addressable, 10-bit digital-to-analog converters (DACs) in a single tiny MS8 package. Each buffered DAC draws just 60μA total supply current, yet is capable of supplying DC output currents in excess of 5mA and reliably driving capacitive loads up to 1000pF. Sleep mode further reduces total supply current to a negligible 1μA.
Proprietary, inherently monotonic voltage interpolation architecture provides excellent linearity while allowing for an exceptionally small external form factor. The double-buffered input logic provides simultaneous update capability and can be used to write to either DAC without interrupting sleep mode.
Ultralow supply current, power-saving sleep mode and extremely compact size make the LTC1661 ideal for battery-powered applications, while its straightforward usability, high performance and wide supply range make it an excellent choice as a general purpose converter.
For additional outputs and even greater board density, please refer to the LTC1660 micropower octal DAC for 10‑bit applications. For 8-bit applications, please consult the LTC1665 micropower octal DAC.
Applications
- Mobile Communications
- Digitally Controlled Amplifiers and Attenuators
- Portable Battery-Powered Instruments
- Automatic Calibration for Manufacturing
- Remote Industrial Devices
Documentation
Data Sheet 1
Reliability Data 1
Technical Articles 1
Product Selector Card 3
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC1661CMS8#PBF | 8-Lead MSOP | ||
| LTC1661CMS8#TRPBF | 8-Lead MSOP | ||
| LTC1661CN8#PBF | 8-Lead PDIP (Narrow 0.3 Inch) | ||
| LTC1661IMS8#PBF | 8-Lead MSOP | ||
| LTC1661IMS8#TRPBF | 8-Lead MSOP | ||
| LTC1661IN8#PBF | 8-Lead PDIP (Narrow 0.3 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jun 5, 2024 - 24_0004 Epoxy Change from Henkel 8290 to 8290A for MSOP (3) |
||
| LTC1661CMS8#PBF | PRODUCTION | |
| LTC1661CMS8#TRPBF | PRODUCTION | |
| LTC1661IMS8#PBF | PRODUCTION | |
| LTC1661IMS8#TRPBF | PRODUCTION | |
|
Feb 3, 2020 - 20_0128 Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LTC1661CMS8#PBF | PRODUCTION | |
| LTC1661CMS8#TRPBF | PRODUCTION | |
| LTC1661IMS8#PBF | PRODUCTION | |
| LTC1661IMS8#TRPBF | PRODUCTION | |
|
Oct 8, 2024 - 24_0234 Migrating Bottom Trace Code Marking to Top Side Laser Marking for PDIP Package |
||
| LTC1661CN8#PBF | PRODUCTION | |
| LTC1661IN8#PBF | PRODUCTION | |
|
Oct 11, 2022 - 22_0241 Epoxy Change from Henkel 8290 to 8290A for PDIP Package |
||
| LTC1661CN8#PBF | PRODUCTION | |
| LTC1661IN8#PBF | PRODUCTION | |
|
Aug 6, 2022 - 22_0172 Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG] |
||
| LTC1661CN8#PBF | PRODUCTION | |
| LTC1661IN8#PBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Tools & Simulations
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
LTC1661/LTC1662 2-Channel, 10-Bit, Micropower DACs