LTC2641 - 16-/14-/12-Bit VOUT DACs in 3mm × 3mm DFN

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.

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)
Typical Application

Applications
  • High Resolution Offset and Gain Adjustment
  • Process Control and Industrial Automation
  • Automatic Test Equipment
  • Data Aquisition Systems
Packaging




Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC2641ACDD-16#PBF3x3 DFN-8C$11.79$8.25
LTC2641ACDD-16#TRPBF3x3 DFN-8C$8.31
LTC2641ACMS8-16#PBFMS-8C$11.79$8.25
LTC2641ACMS8-16#TRPBFMS-8C$8.31
LTC2641AIDD-16#PBF3x3 DFN-8I$14.14$9.90
LTC2641AIDD-16#TRPBF3x3 DFN-8I$9.96
LTC2641AIMS8-16#PBFMS-8I$14.14$9.90
LTC2641AIMS8-16#TRPBFMS-8I$9.96
LTC2641CDD-12#PBF3x3 DFN-8C$4.32$2.95
LTC2641CDD-12#TRPBF3x3 DFN-8C$3.01
LTC2641CDD-14#PBF3x3 DFN-8C$7.94$5.42
LTC2641CDD-14#TRPBF3x3 DFN-8C$5.48
LTC2641CDD-16#PBF3x3 DFN-8C$9.15$6.25
LTC2641CDD-16#TRPBF3x3 DFN-8C$6.31
LTC2641CMS8-12#PBFMS-8C$4.32$2.95
LTC2641CMS8-12#TRPBFMS-8C$3.01
LTC2641CMS8-14#PBFMS-8C$7.94$5.42
LTC2641CMS8-14#TRPBFMS-8C$5.48
LTC2641CMS8-16#PBFMS-8C$9.15$6.25
LTC2641CMS8-16#TRPBFMS-8C$6.31
LTC2641IDD-12#PBF3x3 DFN-8I$5.18$3.54
LTC2641IDD-12#TRPBF3x3 DFN-8I$3.60
LTC2641IDD-14#PBF3x3 DFN-8I$9.52$6.50
LTC2641IDD-14#TRPBF3x3 DFN-8I$6.56
LTC2641IDD-16#PBF3x3 DFN-8I$10.98$7.50
LTC2641IDD-16#TRPBF3x3 DFN-8I$7.56
LTC2641IMS8-12#PBFMS-8I$5.18$3.54
LTC2641IMS8-12#TRPBFMS-8I$3.60
LTC2641IMS8-14#PBFMS-8I$9.52$6.50
LTC2641IMS8-14#TRPBFMS-8I$6.56
LTC2641IMS8-16#PBFMS-8I$10.98$7.50
LTC2641IMS8-16#TRPBFMS-8I$7.56
Demo Boards
Part NumberDescriptionPrice
DC1096BLTC2642A-16 (LTC2641A-16) 16-bit +/-5V Unbuffered Vout DAC (req DC590B)$75.00
Companion Boards
Part NumberDescriptionPrice
DC2026CLinduino One Isolated USB Demo Board: An Arduino- and QuikEval-Compatible Code Development Platform$75.00
DC590BIsolated USB Serial Controller for Linear Technology QuikEval-Compatible Demo Boards$50.00
Datasheet
Reliability Data
Product Selector Card
Press Release
Software and Simulation
Related Product
LTC2641/LTC2642 - 16-/14-/12-Bit Vout DACs in 3mm x 3mm DFN
LTC2642 Package Drawing LTC2642
LTC2642 Package Drawing LTC2642
LTC2642 Package Drawing LTC2642
LTC2642 Package Drawing LTC2642
R461 Reliability Data
DAC Selector Card
Isolated Data Conversion
PWM to DC in One Cycle
Voltage Output DACs
LTC2641/LTC2642 - 低功率 16/14/12 位非缓冲电压输出 DAC 系列具精确 DC 规格和 1us 稳定时间
LTC2641 IBIS Model
LTC2641 Footprints and Symbols