LTC1654

PRODUCTION

Dual 14-Bit Rail-to-Rail DAC in 16-Lead SSOP Package

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Overview

  • 14-Bit Monotonic Over Temperature
  • Smallest Dual 14-Bit DAC: 16-Lead Narrow SSOP Package
  • Individually Programmable Speed/Power:
    • 3.5µs Settling Time at 750µA
    • 8µs Settling Time at 450µA
  • 3V to 5V Single Supply Operation
  • Maximum Update Rate: 0.9MHz
  • Buffered True Rail-to-Rail Voltage Outputs
  • User Selectable Gain
  • Power-On Reset and Clear Function
  • Schmitt Trigger On Clock Input Allows Direct Optocoupler Interface

The LTC1654 is a dual, rail-to-rail voltage output, 14-bit digital-to-analog converter (DAC). It is available in a 16-lead narrow SSOP package, making it the smallest dual 14-bit DAC available. It includes output buffer amplifiers and a flexible serial interface.

The LTC1654 has REFHI pins for each DAC that can be driven up to VCC. The output will swing from 0V to VCC in a gain of 1 configuration or VCC/2 in a gain of 1/2 configuration. It operates from a single 2.7V to 5.5V supply.

The LTC1654 has two programmable speeds: a FAST and SLOW mode with ±1LSB settling times of 3µs or 8.5µs respectively and supply currents of 930µA and 540µA in the two modes. The LTC1654 also has shutdown capability, power-on reset and a clear function to 0V.

Applications

  • Digital Calibration
  • Industrial Process Control
  • Automatic Test Equipment
  • Offset/Gain Adjustment
  • Multiplying DAC
LTC1654
Dual 14-Bit Rail-to-Rail DAC in 16-Lead SSOP Package
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Documentation

Data Sheet 1

Reliability Data 1

Technical Articles 1

Data Sheet

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Hardware Ecosystem

Parts Product Life Cycle Description
Digital 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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