LTC2644
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LTC2644

Dual 12-/10-/8-Bit PWM to VOUT DACs with 10ppm/°C Reference

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Part Models 18
1ku List Price Starting From $2.95
Features
  • No Latency PWM-to-Voltage Conversion
  • Voltage Output Updates and Settles within 8μs
  • 100kHz to 30Hz PWM Input Frequency
  • ±2.5LSB Max INL; ±1LSB Max DNL (LTC2644-12)
  • Guaranteed Monotonic
  • Pin-Selectable Internal or External Reference
  • 2.7V to 5.5V Supply Range
  • 1.71V to 5.5V Input Voltage Range
  • Low Power: 2.7mA at 3V, <1μA Power-Down
  • Guaranteed Operation from –40°C to 125°C
  • 12-Lead MSOP Package
Additional Details
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The LTC2644 is a family of dual 12-, 10-, and 8-bit PWM-to-voltage output DACs with an integrated high accuracy, low drift, 10ppm/°C reference in a 12-lead MSOP package. It has rail-to-rail output buffers and is guaranteed monotonic.

The LTC2644 measures the period and pulse width of the PWM input signals and updates the voltage output DACs after each corresponding PWM input rising edge. The DAC outputs update and settle to 12-bit accuracy within 8μs typically and are capable of sourcing and sinking up to 5mA (3V) or 10mA (5V), eliminating voltage ripple and replacing slow analog filters and buffer amplifiers.

The LTC2644 has a full-scale output of 2.5V using the 10ppm/°C internal reference. It can operate with an external reference, which sets the full-scale output equal to the external reference voltage. Each DAC enters a pin-selectable idle state when the PWM input is held unchanged for more than 60ms. The part operates from a single 2.7V to 5.5V supply and supports PWM input voltages from 1.71V to 5.5V.

Applications

  • Digital Calibration
  • Trimming and Adjustment
  • Level Setting
  • Process Control and Industrial Automation
  • Instrumentation
  • Automotive
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Documentation View All Documentation
Part Models 18
1ku List Price Starting From $2.95
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LTC2644

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Data Sheet

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UPDATED 02/23/2017
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LTC2644: Dual 12-/10-/8-Bit PWM to VOUT DACs with 10ppm/°C Reference Data Sheet (Rev.B)

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UPDATED 09/09/2014
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LTC2644: 10ppm/℃リファレンスを内蔵したPWM入力/電圧出力のデュアル12/10/8ビットD/Aコンバータ データシート (Rev.0)

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UPDATED 03/31/2015
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DN538 - Accurate, Fast Settling Analog Voltages from Digital PWM Signals redirect icon

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DN538 - 从数字 PWM 信号获得准确、快速稳定的模拟电压 redirect icon

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UPDATED 05/19/2015
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DN538 - デジタルPWM 信号からの、高精度、高速セトリングなアナログ電圧生成 redirect icon

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User Guide

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UPDATED 02/29/2016
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Documentation

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
LTC2644CMS-L10#PBF 12-Lead MSOP external-link
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LTC2644CMS-L10#TRPBF 12-Lead MSOP external-link
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LTC2644CMS-L12#PBF 12-Lead MSOP external-link
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LTC2644CMS-L12#TRPBF 12-Lead MSOP external-link
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LTC2644CMS-L8#PBF 12-Lead MSOP external-link
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LTC2644CMS-L8#TRPBF 12-Lead MSOP external-link
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LTC2644HMS-L10#PBF 12-Lead MSOP external-link
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LTC2644HMS-L10#TRPBF 12-Lead MSOP external-link
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LTC2644HMS-L12#PBF 12-Lead MSOP external-link
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LTC2644HMS-L12#TRPBF 12-Lead MSOP external-link
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LTC2644HMS-L8#PBF 12-Lead MSOP external-link
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LTC2644HMS-L8#TRPBF 12-Lead MSOP external-link
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LTC2644IMS-L10#PBF 12-Lead MSOP external-link
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LTC2644IMS-L10#TRPBF 12-Lead MSOP external-link
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LTC2644IMS-L12#PBF 12-Lead MSOP external-link
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LTC2644IMS-L12#TRPBF 12-Lead MSOP external-link
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LTC2644IMS-L8#PBF 12-Lead MSOP external-link
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LTC2644IMS-L8#TRPBF 12-Lead MSOP external-link
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Feb 4, 2020

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Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC

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Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC

LTC2644CMS-L10#PBF

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LTC2644CMS-L10#TRPBF

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LTC2644CMS-L12#PBF

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LTC2644CMS-L12#TRPBF

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Software & Part Ecosystem

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TimerBlox: Voltage-Controlled Pulse Width Modulator (PWM)

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Evaluation Kits 1

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DC2197A-A

LTC2645 Demo Board | Quad 12-/10-/8-BIT PWM to VOUT DACs (requires DC2026)

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DC2197A-A

LTC2645 Demo Board | Quad 12-/10-/8-BIT PWM to VOUT DACs (requires DC2026)

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DC2197A-A
LTC2645 Demo Board | Quad 12-/10-/8-BIT PWM to VOUT DACs (requires DC2026)
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Product Detail

Demonstration circuit 2197A features the LTC2645, Quad 12-/10-/8-Bit PWM to VOUT DACs with 10ppm/°C reference in a tiny 4.9mm × 4mm 16-lead MSOP package. DC2197A-A is populated with the 2.5V, 12-bit version of the LTC2645.

Resources

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DC2197A - Schematic Download

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DC2197A - Design Files Download

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DC2197A - Demo Manual Download

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DC2197A-A

LTC2645 Demo Board | Quad 12-/10-/8-BIT PWM to VOUT DACs (requires DC2026)

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