AD7225LRZ

Reference Type:	External
Base Part Number:	AD7225
Supplier Device Package:	24-SOIC
Package / Case:	24-SOIC (0.295", 7.50mm Width)
Operating Temperature:	-40°C ~ 85°C
Architecture:	R-2R
INL/DNL (LSB):	±0.5 (Max), ±1 (Max)
Voltage - Supply, Digital:	14.25 V ~ 15.75 V
Voltage - Supply, Analog:	11.4 V ~ 16.5 V, -5V
Series:	--
Data Interface:	Parallel
Differential Output:	No
Output Type:	Voltage - Buffered
Settling Time:	4µs
Number of D/A Converters:	4
Number of Bits:	8
Part Status:	Active
Packaging:	Tube

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Introduction

Data Acquisition is a complex task that requires the use of Digital to Analog Converters (DAC). These specialized devices work in conjunction with Analog to Digital Converters (ADC) to efficiently convert digital signals into analog signals for use in a variety of applications. AD7225LRZ is a versatile and feature-rich 8-bit Digital to Analog Converter, offering a wide range of application fields and advanced working principles.

Application Fields and Working Principle of AD7225LRZ

AD7225LRZ is suitable for applications ranging from industrial process control, electrical measurement, and sensor conditioning, to audio/video signal conditioning and digital power supplies. Its features and working principle provides superior flexibility to meet the most demanding application requirements.The working principle of AD7225LRZ is based on a charge redistribution architecture. The DAC has an internal storage capacitor that is loaded with the desired analog voltage, then rated in several cycles and , out of the DAC’s four-bit Binary Coded Decimal (BCD) input. This process is performed by the four-bit BCD-to-DAC code converter, wherein four comparators are used to compare the voltage stored in the capacitor with the DAC’s four-bit BCD code. When the DAC’s output voltage is at the predetermined reference voltage, the internal capacitors is discharged and the DAC’s output is updated. The AD7225LRZ is ideal for high-accuracy, low-power, and cost-sensitive applications. With the eight-bit resolution of the DAC, the range of values that the output of can cover is 0–255, allowing it to achieve accurate signal conversions. Furthermore, AD7225LRZ features a wide power supply range of 2.7V to 5.5V, allowing it to be used in a broad range of applications. The AD7225LRZ also features a user-programmable digital output coded in parallel, enabling it to be used in conjunction with a digital switching network. This feature allows it to be used for applications such as industrial process control and sensor conditioning, which require quick and accurate changes in analog outputs.

Conclusion

The AD7225LRZ 8-bit Digital to Analog Converter is a versatile and feature-rich device, offering a wide range of application fields and advanced working principles. Its maximum resolution of 8-bit, wide power supply range, and user-programmable digital output coded in parallel, make it ideal for high-accuracy, low-power, and cost-sensitive applications. It is suitable for a broad range of applications including industrial process control, electrical measurement, sensor conditioning, audio/video signal conditioning and digital power supplies.

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