Overview
Features and Benefits
- 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 (7.1MΩ Typ)—Eliminates External Buffers
- 3-Wire Serial Interface with Schmitt Trigger Inputs
- Differential Nonlinearity: ±0.75LSB Max
Product Details
The LTC1662 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 (0.5Ω 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.
Applications
- Mobile Communications
- Portable Battery-Powered Instruments
- Remote or Inaccessible Adjustments
- Digitally Controlled Amplifiers and Attenuators
- Factory or Field Calibration
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
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R392 Reliability Data3/22/2018
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DAC Selector Card9/21/2015
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PWM to DC in One Cycle8/7/2014
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Voltage Output DACs3/3/2011
Tools & Simulations
Precision DAC Error Budget Tool
The Precision DAC Error Budget Tool is a web application that calculates the DC Accuracy of precision DAC signal chains. It shows how the static errors accumulate throughout your signal chain to quickly evaluate the design tradeoffs. Calculations include the DC errors introduced by Voltage References, Operation Amplifiers and Precision DACs.
Product Recommendations
LTC1662 Companion Parts
Design Resources
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 Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| LTC1662CMS8#PBF | Material Declaration | Reliability Data | 8-Lead MSOP | |
| LTC1662CMS8#TRPBF | Material Declaration | Reliability Data | 8-Lead MSOP | |
| LTC1662CN8#PBF | Material Declaration | Reliability Data | 8-Lead PDIP (Narrow 0.3 Inch) | |
| LTC1662IMS8#PBF | Material Declaration | Reliability Data | 8-Lead MSOP | |
| LTC1662IMS8#TRPBF | Material Declaration | Reliability Data | 8-Lead MSOP | |
| LTC1662IN8#PBF | Material Declaration | Reliability Data | 8-Lead PDIP (Narrow 0.3 Inch) | |
| Wafer Fabrication Data | R392 Reliability Data |
PCN-PDN Information
Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.
Support & Discussions
LTC1662 Discussions
Sample & Buy
Ordering FAQs
See our Ordering FAQs for answers to questions about online orders, payment options and more.
Buy Now Pricing
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List Pricing
(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Lead Times
Please see the latest communication from our CCO regarding lead times.
Sampling
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Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.