ADS1222IPWTG4

Number of A/D Converters:	1
Base Part Number:	ADS1222
Supplier Device Package:	14-TSSOP
Package / Case:	14-TSSOP (0.173", 4.40mm Width)
Operating Temperature:	-40°C ~ 85°C
Features:	Temperature Sensor
Voltage - Supply, Digital:	2.7 V ~ 5.5 V
Voltage - Supply, Analog:	2.7 V ~ 5.5 V
Reference Type:	External
Architecture:	Sigma-Delta
Series:	--
Ratio - S/H:ADC:	--
Configuration:	MUX-ADC
Data Interface:	SPI
Input Type:	Differential, Single Ended
Number of Inputs:	2
Sampling Rate (Per Second):	240
Number of Bits:	24
Part Status:	Active
Packaging:	Tape & Reel (TR)

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The ADS1222IPWTG4 is a high performance, low cost, low power 4-channel Sigma Delta Analog-to-Digital Converter (ADC). It is one of the many ADC solutions available on the market and is designed to meet the most demanding requirements in the industrial field. In this article, we will discuss the application fields and working principles of the ADS1222IPWTG4 ADC.Application FieldsThe ADS1222IPWTG4 is well suited for a variety of applications in the industrial field, including motor control, high-resolution power monitoring, and other applications for which high accuracy and performance is required. The ADS1222IPWTG4 is particularly well suited for applications such as motor control where high channel density, high resolution, and low power are all necessary. The IC includes an integrated signal conditioner that is capable of filtering measurements from high-frequencies, as well as providing accurate measures of amplitude and phase information. The data acquisition system of this device enables a wide range of signal monitoring and signal analysis capabilities. As it has a small size, it can be implemented easily into tight places and control systems. It is also compatible with other signal conditioning devices the system may use. This increase the flexibility of the system.Working PrinciplesThe main principles of Sigma Delta ADC are the oversampling technique and the noise-shaping technique. The oversampling technique enables the converter to divide the signal into many “slices”, which are then converted into digital values. The noise-shaping technique is used to reduce the effects of noise and other errors associated with the oversampling of the signal.The ADS1222IPWTG4 achieves its high accuracy and performance by using a combination of the noise-shaping and oversampling techniques. The IC offers a noise-shaped bandwidth (NSBW) of 25 kHz and an oversampling ratio of 256X. This high NSBW allows the device to reduce noise in the frequency range from 50kHz to 250kHz. The oversampling rate enables the device to accurately and quickly convert analog signals into digital values.The ADC uses a differential nonlinearity (DNL) of ± 1 LSB, meaning it is capable of measuring signals with a very high resolution. This is especially useful when measuring signals with high frequency components, such as when controlling motors. Additionally, the ADS1222IPWTG4 provides a wide dynamic range and low current consumption of 155 mA at 5 V.ConclusionThe ADS1222IPWTG4 is a high performance, low cost, low power digital-to-analog converter (DAC). It is designed to meet the demanding requirements of industrial applications. It is well suited for motor control, high-resolution power monitoring, and other applications where high accuracy and performance is needed. This device implements the combination of noise-shaping and oversampling techniques to achieve high accuracy and performance. It includes an integrated signal conditioner that is capable of filtering measurements from high-frequencies, as well as providing accurate measures of amplitude and phase information. Additionally, the data acquisition system allows a wide range of signal monitoring and analysis capabilities.

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