LTC1655

PRODUCTION

16-Bit Rail-to-Rail Micropower DACs in SO-8 Package

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Overview

  • 16-Bit Monotonicity Over Temperature
  • Deglitched Rail-to-Rail Voltage Output
  • SO-8 Package
  • ICC(TYP): 600µA
  • Internal Reference:
    • 2.048V (LTC1655)
    • 1.25V (LTC1655L)
  • Maximum DNL Error: ±1LSB
  • Settling Time: 20µS to ±1LSB
  • 750kHz Max Update Rate
  • Power-On Reset to Zero Volt
  • 3-Wire Cascadable Serial Interface
  • Low Cost
  • Pin Compatible Upgrade for LTC1451 12-Bit DAC Family

The LTC1655/LTC1655L are rail-to-rail voltage output, 16-bit digital-to-analog converters in an SO-8 package. They include an output buffer and a reference. The 3-wire serial interface is compatible with SPI/QSPI and MICROWIRE™ protocols. The CLK input has a Schmitt trigger that allows direct optocoupler interface.

The LTC1655 has an on-board 2.048V reference that can be overdriven to a higher voltage. The output swings from 0V to 4.096V when using the internal reference. The typical power dissipation is 3.0mW on a single 5V supply.

The LTC1655L has an on-board 1.25V reference that can be overdriven to a higher voltage. The output swings from 0V to 2.5V when using the internal reference. The typical power dissipation is 1.8mW on a single 3V supply.

The LTC1655/LTC1655L are pin compatible with the 12-bit VOUT DAC family, allowing an easy upgrade path. They are the only buffered 16-bit DACs in an SO-8 package and they include an on-board reference for standalone performance.

Applications

  • Digital Calibration
  • Industrial Process Control
  • Automatic Test Equipment
  • Cellular Telephones
LTC1655
16-Bit Rail-to-Rail Micropower DACs in SO-8 Package
Functional Block Diagram: 16-Bit Rail-to-Rail DAC Differential Nonlinearity vs Input Code Product Package 1
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Documentation

Data Sheet 1

Reliability Data 1

Technical Articles 1

Data Sheet

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Interface Transceivers & Isolators 1
LTM2883
PRODUCTION SPI/Digital or I2C μModule Isolator with Adjustable ±12.5V and 5V Regulated Power
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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.

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