AD7244

PRODUCTION

12-/14-Bit DAC, 3 V Buried Zener Reference, DAC

Data Sheet (Rev. B) Product Selection Table
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Overview

  • Two 12-Bit/14-Bit DACs with Output Amplifiers
    AD7242: 12-Bit Resolution
    AD7244: 14-Bit Resolution
  • Fast Settling Time
    AD7242: 3 µs to ±1/2 LSB
    AD7244: 4 µs to ±1/2 LSB
  • On-Chip Voltage Reference
  • High Speed Serial Interface
  • Operates from ±5 V Supplies
  • Specified Over-40°C to +85°C 
  • in Plastic Packages
  • Low Power - 130 mW typ

The AD7242 / AD7244 is a fast, complete, dual 12-bit/14-bit voltage output D/A converter. It consists of a 12-bit/14-bit DAC, 3 V buried Zener reference, DAC output amplifiers and high speed serial interface logic.

Interfacing to both DACs is serial, minimizing pin count and allowing a small package size. Standard control signals allow interfacing to most DSP processors and microcontrollers. Asynchronous control of DAC updating for both DACs is made possible with a separate LDAC input for each DAC.

The AD7242 / AD7244 operates from ±5 V power supplies, providing an analog output range of ±3 V. A REF OUT/REF IN function allows the DACs to be driven from the on-chip 3 V reference or from an external reference source.

The AD7242 / AD7244 is fabricated in Linear Compatible CMOS (LC2MOS), an advanced mixed technology process that combines precision bipolar circuits with low power CMOS logic. Both parts are available in a 24-pin, 0.3-inch wide, plastic or hermetic dual-in-line package (DIP) and in a 28-pin, plastic small outline (SOIC) package. The AD7242 and AD7244 are available in the same pinout to allow easy upgrade from 12-bit to 14-bit performance.

PRODUCT HIGHLIGHTS

  1. Complete, Dual 12-Bit/14-Bit DACs The AD7242 / AD7244 provides the complete function for generating voltages to 12-bit/14-bit resolution. The part features an on-chip reference, output buffer amplifiers and two 12-bit/14-bit D/A converters.
  2. High Speed Serial Interface The AD7242 / AD7244 provides a high speed, easy-to-use, serial interface allowing direct interfacing to DSP processors and microcontrollers. A separate serial port is provided for each DAC.
  3. Small Package Size The AD7242 / AD7244 is available in a 24-pin DIP and a 28- pin SOIC package offering considerable space saving over comparable solutions.
AD7244
12-/14-Bit DAC, 3 V Buried Zener Reference, DAC
AD7242/AD7244 Functional Block Diagram AD7242/AD7244 Pin Configuration
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Documentation

Data Sheet 2

Application Note 1

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
AD5732R
PRODUCTION Complete, Dual, 14-Bit, Serial Input, Unipolar/Bipolar, Voltage Output DAC
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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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