Overview
Features and Benefits
- 8-Pin SO Package
- Buffered Voltage Output
- Built-In 2.048V Reference
- 500µV/LSB with 2.048V Full Scale
- 1/2 LSB Max DNL Error
- Guaranteed 12-Bit Monotonic
- 3-Wire Cascadable Serial Interface
- Wide Single Supply Range: VCC = 4.75V to 15.75V
- Low Power: ICC Typ = 350µA with 5V Supply
Product Details
The LTC®1257 is a complete single supply, 12-bit voltage output D/A converter (DAC) in an SO-8 package. The LTC1257 includes an output buffer amplifier, 2.048V voltage reference and an easy to use 3-wire cascadable serial interface. An external reference can be used to override the internal reference and extend the output voltage range to 12V. The power supply current is a low 350µA when operating from a 5V supply, making the LTC1257 ideal for battery-powered applications. The space-saving 8-pin SO package and operation with no external components provide the smallest 12-bit D/A system available.
Applications
- Digital Offset/Gain Adjustment
- Industrial Process Control
- Automatic Test Equipment
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.
Documentation & Resources
-
R266 Reliability Data3/26/2018
-
DAC Selector Card9/21/2015
-
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
LTC1257 Companion Parts
Recommended µModule Isolator
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 |
---|---|---|---|---|
LTC1257CN8#PBF | Material Declaration | Reliability Data | 8-Lead PDIP (Narrow 0.3 Inch) | |
LTC1257CS8#PBF | Material Declaration | Reliability Data | 8-Lead SOIC (Narrow 0.15 Inch) | |
LTC1257CS8#TRPBF | Material Declaration | Reliability Data | 8-Lead SOIC (Narrow 0.15 Inch) | |
LTC1257IN8#PBF | Material Declaration | Reliability Data | 8-Lead PDIP (Narrow 0.3 Inch) | |
LTC1257IS8#PBF | Material Declaration | Reliability Data | 8-Lead SOIC (Narrow 0.15 Inch) | |
LTC1257IS8#TRPBF | Material Declaration | Reliability Data | 8-Lead SOIC (Narrow 0.15 Inch) | |
Wafer Fabrication Data | R266 Reliability Data |
PCN-PDN Information
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Support & Discussions
Sample & Buy
Ordering FAQs
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Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
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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