LTC2488IDE#PBF

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Data Acquisition - Analog to Digital Converters (ADC)

The LTC2488IDE#PBF is a 16-bit, versatile and low-power, high-speed analog-to-digital converter (ADC) designed for a wide range of applications. It offers spectacular performance, low power and mechanical packaging in a compact package for easy integration into devices such as cellular phones, netbooks, laptops and even digital cameras. This ADC can be used to measure a variety of signals, from very low frequency audio signals, acoustic signals and even temperature received from a variety of sensors. User-friendly features like auto-calibration, selectable channels, built-in temperature sensor, single-ended input and output, high speed and low power, makes this ADC an ideal choice for many demanding applications.

Design

The LTC2488IDE#PBF is a 16-bit, 500 ksps, low power ADC that is designed to interface directly to the microcontroller and read analog signals with a high resolution. It has built-in calibration and can support both single-ended and differential input configurations. This ADC provides a 16-bit set of digital words representing the positive or negative value of the input signal. The LTC2488IDE#PBF offers selectable gain from 0.25 V/V to 16 V/V and resolution of 0.305 V LSB.

The device also supports various modes such as single-shot, continuous, data channel select, and programmable power-down for power saving. It requires low mA power consumption when operating, making it an ideal choice for battery-powered applications. The LTC2488IDE#PBF also features a built-in temperature sensor (T_INT) for easily monitoring the device temperature.

Application field

The LTC2488IDE#PBF is suitable for a wide range of applications such as cellular phones, sensors, medical diagnostics and imaging, audio, high speed data loggers, wireless and portable communication, automotive, medical imaging, and industrial control systems. It can be used to measure signals with a frequency range from 1 Hz to greater than 500 ksps, in single-ended and differential configurations with 16-bit accuracy. It is ideal for applications that need accurate and low power analog-to-digital conversion.

The LTC2488IDE#PBF is also suitable for applications that require temperature measurement, as it provides a built-in temperature sensor (T_INT) for continuously monitoring the temperature of the ADC. This feature enables the device to automatically adjust for temperature variations in order to minimize measurement errors and improve accuracy.

Working principle

The working principle of the LTC2488IDE#PBF is based on measuring the voltage difference between the input and a reference voltage. This voltage difference is converted into a digital value and is sent out as a 16-bit digital word. The conversion process takes place within a single cycle of the ADC\'s clock. The ADC\'s internal voltage reference and programmable gain amplifier (PGA) enable the device to accurately measure signals below and above the reference voltage. The internal PGA also ensures that the dynamic range is preserved even if the input signal is greater than the reference voltage.

The LTC2488IDE#PBF also has a calibration feature which enables the device to automatically compensate for any DC offset and gain errors. This feature allows the device to obtain higher resolution and accurate measurements without any manual adjustment. The device also features a built-in temperature sensor which is used to continuously monitor the ambient temperature and reduce the effect of temperature variability on the measurements.

Conclusion

The LTC2488IDE#PBF is a versatile, 16-bit, high-speed, low-power ADC that can be used in a wide range of applications. It features selectable gain, calibration, single-ended inputs and outputs, and a built-in temperature sensor, making it an ideal choice for applications that need high accuracy and low power. Its superior performance, small size, and low power makes it an ideal device for portable and mobile applications.

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