AD7982BCPZ-RL7

Number of A/D Converters:	1
Base Part Number:	AD7982
Supplier Device Package:	10-LFCSP-WD (3x3)
Package / Case:	10-WFDFN Exposed Pad, CSP
Operating Temperature:	-40°C ~ 85°C
Features:	--
Voltage - Supply, Digital:	2.375 V ~ 2.625 V
Voltage - Supply, Analog:	2.375 V ~ 2.625 V
Reference Type:	External
Architecture:	SAR
Series:	PulSAR®
Ratio - S/H:ADC:	1:1
Configuration:	S/H-ADC
Data Interface:	SPI, DSP
Input Type:	Differential
Number of Inputs:	1
Sampling Rate (Per Second):	1M
Number of Bits:	18
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

Data Acquisition - Analog to Digital Converters (ADC) have become increasingly important in various application fields. Generally speaking, ADC converts an analog signal into digital form that is easily processed by a digital system. Many ADC devices supply more advanced features such as temperature measurement, wideband bandwidth, and higher resolution. In this article, we will introduce the AD7982BCPZ-RL7 analog to digital converter and its application field as well as its working principle.

Application Field

The AD7982BCPZ-RL7 is a low-power, high-precision, 6-bit mono-slope Sigma-Delta ADC with differential inputs and rail-to-rail output. This device is suited for medical and industrial applications as well as mobile device applications. It features an excellent signal-to-noise (SNR), enabling low-power operation in a wide range of frequencies. The AD7982 implements a power management system, which reduces active-mode power consumption to merely 10 mW at 3 V. The applications of the AD7982BCPZ-RL7 are as follows:

• Industrial & Automation Applications: The AD7982BCPZ-RL7 is suitable for industrial & automation applications, such as dynamic weighing systems, closed-loop control systems, linearization systems, and other industrial process control applications that require accurate, low-power ADC.
• Medical & Fitness Applications: The AD7982BCPZ-RL7 features an excellent SNR which make it ideal for medical & fitness applications, such as monitoring the patient\'s heart rate, temperature and other vital signs. Moreover, it can be used for patient monitoring systems, surgical instrumentation, and many other applications.
• Mobile Devices Applications: The AD7982BCPZ-RL7 is a low-power device, which makes it suitable for mobile device applications, such as medical and fitness tracking devices, mobile protective gear, mobile sensors, ventilation control, and many other applications.

Working Principle

The AD7982BCPZ-RL7 is based on a Sigma-Delta architecture, which uses an integrator to sample the analog input and then filters the results. The output of the filter is then compared to a reference voltage and then converted to a digital output. The signals are then oversampled and subsequently decimated to the required resolution. The device implements an advanced power management system, which reduces active-mode power consumption to 10 mW at 3 V. It integrates an on-chip low-power oscillator as well as an internal reference voltage. The AD7982BCPZ-RL7 features a wide bandwidth and high resolution, enabling accurate measurement and low-power operation in a wide range of frequencies. It also features a single-ended, differential, or combined single-ended and differential input range. It further provides an accurate output, which is digitally corrected for gain, offset and full-scale accuracy.

Conclusion

In conclusion, the AD7982BCPZ-RL7 is a low-power, high-precision, 6-bit mono-slope Sigma-Delta ADC with differential inputs and rail-to-rail output. It is suitable for a wide range of industrial and medical applications, such as dynamic weighing systems, closed-loop control systems, linearization systems, and patient monitoring systems. It implements an advanced power management system to reduce power consumption and features a wide bandwidth and high resolution.

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