AD7938BSUZ

Number of A/D Converters:	1
Base Part Number:	AD7938
Supplier Device Package:	32-TQFP (7x7)
Package / Case:	32-TQFP
Operating Temperature:	-40°C ~ 85°C
Features:	--
Voltage - Supply, Digital:	2.7 V ~ 5.25 V
Voltage - Supply, Analog:	2.7 V ~ 5.25 V
Reference Type:	External, Internal
Architecture:	SAR
Series:	--
Ratio - S/H:ADC:	1:1
Configuration:	MUX-S/H-ADC
Data Interface:	Parallel
Input Type:	Differential, Pseudo-Differential, Single Ended
Number of Inputs:	4, 7, 8
Sampling Rate (Per Second):	1.5M
Number of Bits:	12
Part Status:	Active
Packaging:	Tray

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Introduction

Data Acquisition - Analog to Digital Converters (ADC) are electronic devices that can convert analog signals into digital signals. AD7938BSUZ is a high efficiency and low power converter from the Analog to Digital Converters family, developed and manufactured by The Data Acquisition products line at Dow Corning Corporation. The AD7938BSUZ is designed for battery-powered applications, portable equipment, automotive and industrial applications, such as voltage and temperature monitoring.

Application Field

AD7938BSUZ is a popular choice to design embedded systems because of its high efficiency and low power capability. It is a great choice for applications that need to accumulate data quickly and accurately. The AD7938BSUZ can be used in applications such as Industrial Equipment, Agricultural Equipment, Renewable Energy and Automotive Controls.

Features

The AD7938BSUZ has some features that make it a great solution for various applications. These features include: - High accuracy: Each conversion is performed using a 12-bit resolution, so the accuracy is about (1/4VIN) for 0 - +4V input voltage.- Low Power Consumption: The AD7938BSUZ has a low power consumption of 250mW, this makes it ideal for applications that require a low power consumption without compromising accuracy and speed.- Wide operating temperature range: This means that the device will work from -40C to +85C, making it suitable to work in harsh environments. - Fast conversion speed: This is great for applications that require quick data acquisition. The AD7938BSUZ has a conversion speed of up to 1MSPS.

Working Principle

The working principle of the AD7938BSUZ is based on the “Flash A/D Converter” technology. This technology uses a comparator to compare the analog input voltage to a voltage reference, the output of the comparator is then fed to a logic control unit that determines the digital output. The AD7938BSUZ has a 12-bit resolution, meaning that the output is a 12-bit digital number. The output data is stored in an internal latch, so it can be read and manipulated by an external microcontroller. The AD7938BSUZ also has an extended range feature which allows it to measure input voltage ranging from -4V to +4V. This means that even if the analog signal goes outside of the range of 0 – +4V, the ADC still samples it and produces a correct digital output.

Conclusion

The AD7938BSUZ from Dow Corning Corporation is a great solution for applications that require a low power, high accuracy and fast data acquisition. This device is suitable for many applications such as industrial, automotive and renewable energy, thanks to its wide operating temperature range and extended input voltage range. The AD7938BSUZ is based on the “Flash A/D Converter” technology, which uses a comparator to compare the analog signal to a reference voltage, and the output of the comparator is fed to a logic control unit. The output of the ADC is a 12-bit digital number that is stored in an internal latch and can be read and manipulated by an external microcontroller.

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