ADS1224EVM

Series:	--
Part Status:	Obsolete
Number of A/D Converters:	1
Number of Bits:	24
Sampling Rate (Per Second):	240
Data Interface:	Serial
Input Range:	±5 V
Power (Typ) @ Conditions:	1mW @ 3 V
Utilized IC / Part:	ADS1224
Supplied Contents:	Board(s)

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ADS1224EVM is an evaluation board designed to quickly evaluate Texas Instruments’ ultra-low power, low voltage, delta-sigma A/D converter. It can be used in battery powered applications such as portable medical equipment, industrial process control, or smart meters, and is ideal for long-term monitoring and recording. The ADS1224EVM board is composed of a 24-bit delta-sigma analog-to-digital converter (ADC) with integrated low noise programmable gain amplifier (PGA), low pass filter as well as temperature sensor.

Application Field

ADS1224EVM is suitable for applications like long-term recording of data with very low noise levels and high resolution. It can be used in applications such as medical, industrial, automation, and communication applications where power consumption and accuracy are important. One of the key advantages of this device is its low power consumption. It can run on a supply voltage of as low as 1.8V, while providing excellent offset accuracy and good signal to noise ratio.The high accuracy and low power consumption of the device make it suitable for use in precision measurement equipment. It also features an auto-calibration algorithm which allows for offset and gain errors to be corrected automatically. The integrated low-noise PGA loop further improves the accuracy of the ADC by providing gain and clipping features and reducing the common-mode input noise of the system.This device is also suitable for communication applications, where high accuracy is required. It features a sample rate of up to 9960 Hz and the high resolution and low noise levels of the device allow for accurate transmission of data without any interference.

Working Principle

The working principle of ADS1224EVM is based on a differential input delta-sigma converter, which is a type of continuous-time analog-to-digital converter. The input of the ADC is fed into the delta-sigma modulator, and the output of the modulator is fed into a low-pass filter. The low-pass filter then moves the digital output from the modulator and converts it into a digital signal.The analog input signal is fed into the differential input of the delta-sigma converter and the signal is amplified by the pre-amplifier. The amplified signal is then fed into the delta-sigma modulator, which performs sampling and analog-to-digital conversion of the signal. The output of the modulator then passes through the low-pass filter, which eliminates any unwanted frequencies from the signal. The filtered digital signal is the output of the ADC, which can then be used in further data processing operations.The ADS1224EVM also includes a temperature sensor, which provides a reference voltage that is used in the calibration of the device. An auto-calibration algorithm is used to reduce the errors that can occur due to temperature variations and supply voltage changes. This algorithm precisely calibrates the gain and offset of the device, ensuring that it provides accurate and reliable results.The ADS1224EVM is a low-power and low-voltage evaluation board which is ideal for battery powered applications. It features a 24-bit delta-sigma analog-to-digital converter, with integrated low noise programmable gain amplifier, low-pass filters and temperature sensor. The device enables accurate and reliable measurement of low-level signals, and its integrated auto-calibration algorithm ensures precise calibration of the gain and offset of the device.

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