AD7622BCPZRL

Number of A/D Converters:	1
Base Part Number:	AD7622
Supplier Device Package:	48-LFCSP-VQ (7x7)
Package / Case:	48-VFQFN Exposed Pad, CSP
Operating Temperature:	-40°C ~ 85°C
Features:	--
Voltage - Supply, Digital:	2.37 V ~ 2.63 V
Voltage - Supply, Analog:	2.37 V ~ 2.63 V
Reference Type:	External, Internal
Architecture:	SAR
Series:	PulSAR®
Ratio - S/H:ADC:	1:1
Configuration:	S/H-ADC
Data Interface:	SPI, Parallel, DSP
Input Type:	Differential
Number of Inputs:	1
Sampling Rate (Per Second):	2M
Number of Bits:	16
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Data Acquisition - Analog to Digital Converters (ADC)The AD7622BCPZ-RL is one of the most popular Analog to Digital Converter (ADC) chips available in the market today. It is a dual-gain-range converter that can convert either 2.5V or 5V analog signals into a 0 to 1023 digital value, which is then read by a microcontroller, such as an Arduino or other development board. The chip is also capable of providing its own voltage reference, which helps in keeping the errors on the analog signal conversion within acceptable levels. It is an ideal choice for applications which require high precision and stability since it uses a two-level Sigma-Delta (S-Delta) conversion technique.The main application fields for this ADC include signal processing, measurement, signal conditioning, and control. The chip is suitable for applications such as thermocouple, strain gage and load cell measurement, signal conditioning for industrial, automotive and aerospace applications, data acquisition, and control and automation projects. The various features of the chip as follows help to make it suitable for such applications:The AD7622BCPZ-RL provides a wide range of gain settings, which can be programmed according to the application requirements. The chip features a built-in, temperature-independent voltage reference, together with a programmable gain amplifier and a highly linear, non-overmatched input range. Additionally, the chip features an advanced, incremental architecture that provides optimized single and multi-channel applications.The working principle of the ADC chip is based on the S-Delta conversion technique, which uses Sigma-Delta modulated signals to quantize the analog signal. The S-Delta technique involves two basic elements: a low-pass filter and a comparator. The low-pass filter is used to convert the analog signal into a digital value and the comparator is used to detect the threshold of the analog signal conversion.The ADC chip contains two low-pass filters and two comparators, which are responsible for the conversion process. The first low-pass filter is used to convert the analog signal into a digital value, and the second low-pass filter is used to provide a degree of noise reduction for the digital signal. The two comparators are used to distinguish between the staircase levels of the analog signal and the threshold levels of the digital signal.To ensure the accuracy of the conversion, the AD7622BCPZ-RL also contains a voltage reference circuit and a programmable gain amplifier (PGA). The voltage reference circuit helps to ensure that the analog signal is converted accurately and the PGA helps to set the gain levels of the signal. Both of these components are important to ensure that the analog signal is converted to its digital equivalent with minimal error.In conclusion, the AD7622BCPZ-RL is a dual-gain-range ADC that is suitable for a variety of applications due its advanced features, wide range of gain setting, and precise output. The chip can handle both single and multi-channel applications and provides excellent performance for signal conditioning and measurement applications. The ADC utilizes a S-Delta conversion technique and also contains voltage reference and PGA components, which helps to ensure the accuracy and stability of the output.

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