LTC1662 - Ultralow Power, Dual 10-Bit DAC in MSOP
Features
- Ultralow Power: 1.5µA (Typ) ICC per DAC Plus 0.05µA Sleep Mode for Extended Battery Life
- Tiny: Two 10-Bit DACs in an 8-Lead MSOP—Half the Size of an SO-8
- Wide 2.7V to 5.5V Supply Range
- Double Buffered for Simultaneous DAC Updates
- Rail-to-Rail Voltage Outputs Drive 1000pF
- Reference Range Includes Supply for Ratiometric 0V-to-VCC Output
- Reference Input Impedance Is Code-Independent (7.1M Ohms Typ)—Eliminates External Buffers
- 3-Wire Serial Interface with Schmitt Trigger Inputs
- Differential Nonlinearity: ±0.75LSB Max
Typical Application
Description
The LTC®1662 is an ultralow power, fully buffered voltage output, dual 10-bit digital-to-analog converter (DAC). Each DAC channel draws just 1.7µA (typ) total supply-plus-reference operating current, yet is capable of supplying DC output currents in excess of 1mA and reliably driving capacitive loads of up to 1000pF. A programmable Sleep mode further reduces total operating current to 0.05µA. Linear Technology’s proprietary, inherently monotonic architecture provides excellent linearity and an exceptionally small external form factor. The double-buffered input logic provides simultaneous update capability and can be used to write to the DACs without interrupting Sleep mode. With its tiny operating current and exceptionally small size, the LTC1662 is ideal for use in the most power-constrained products. For most designs, there is no perceptible impact on the power budget; the LTC1662 draws many times less current than even a trimpot, while providing buffered, low impedance (0.5 Ohms typical, VCC = 5V) rail-to-rail outputs. The LTC1662 is pin and software compatible with the LTC1661 dual, 60µA 10-bit DAC. It is available in 8-pin MSOP and PDIP packages and is specified over the industrial temperature range.
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 |
|---|---|---|---|---|---|
| LTC1662CMS8#PBF | MS-8 | MS8 | C | 05-08-1660 | Yes |
| LTC1662CMS8#TRPBF | MS-8 | MS8 | C | 05-08-1660 | Yes |
| LTC1662CN8#PBF | N-8 | N | C | 05-08-1510 (N8) | Yes |
| LTC1662IMS8#PBF | MS-8 | MS8 | I | 05-08-1660 | Yes |
| LTC1662IMS8#TRPBF | MS-8 | MS8 | I | 05-08-1660 | Yes |
| LTC1662IN8#PBF | N-8 | N | I | 05-08-1510 (N8) | 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 | |
|---|---|---|---|---|---|---|
| LTC1662CMS8#PBF | MS-8 | C | $3.15 | $2.65 | Yes | |
| LTC1662CMS8#TRPBF | MS-8 | C | $2.71 | Yes | ||
| LTC1662CN8#PBF | N-8 | C | $3.35 | $2.80 | Yes | |
| LTC1662IMS8#PBF | MS-8 | I | $3.35 | $2.80 | Yes | |
| LTC1662IMS8#TRPBF | MS-8 | I | $2.86 | Yes | ||
| LTC1662IN8#PBF | N-8 | I | $3.55 | $3.00 | 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
- Mobile Communications
- Portable Battery-Powered Instruments
- Remote or Inaccessible Adjustments
- Digitally Controlled Amplifiers and Attenuators
- Factory or Field Calibration
People Who Viewed This Product Also Viewed
- LT3080 - Adjustable 1.1A Single Resistor Low Dropout Regulator
- LTC1661 - Micropower Dual 10-Bit DAC in MSOP
- LT5400 - Quad Matched Resistor Network
- LTC6655 - 0.25ppm Noise, Low Drift Precision References
- LT1763 - 500mA, Low Noise, LDO Micropower Regulators
- LTC1043 - Dual Precision Instrumentation Switched-Capacitor Building Block
- LTC6992 - TimerBlox: Voltage-Controlled Pulse Width Modulator (PWM)
- LT4320/LT4320-1 - Ideal Diode Bridge Controller
- LT1167 - Single Resistor Gain Programmable, Precision Instrumentation Amplifier
- LT6654 - Precision Wide Supply High Output Drive Low Noise Reference
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.
