LTC2421IMS#TRPBF

The LTC2421IMS#TRPBF is an analog-to-digital converter (ADC) that is used for data acquisition. It is a 24-bit, low-power, precision, Sigma Delta converter with an integrated, proprietary distortion-canceling technique. The LTC2421IMS#TRPBF is a highly integrated device, providing on-chip oscillator, reference, and internal voltage regulator. It is suitable for applications in industrial, medical, process control, and automotive markets.

Application field

The LTC2421IMS#TRPBF is designed for high precision analog-to-digital (A/D) conversion, suitable for sampling of extremely low-level signals such as thermocouples and RTDs. Its on-chip features and selectable power modes make the device suitable for a wide range of applications, including industrial, medical and process control. The onboard oscillator and built-in functions such as delay and sleep enable designers to achieve optimized precision, power, and performance.

Working principle

The LTC2421IMS#TRPBF is a sigma-delta converter with an integrated, proprietary distortion-canceling technology. This distortion-canceling technology reduces the distortion due to harmonic distortion introduced by the amplifier or source. It allows the converter to operate with a lower noise floor, thus increasing the accuracy of the output. The device also offers low-power operation, with selectable power modes for optimized performance.

The device functions through an internal oscillator and references, as well as an analog input stage. These comprise a programmable gain amplifier (PGA) that includes an offset cancellation bridge, an antialiasing filter, a chopper-stabilized operational amplifier, and the complete digital modulator with its distortion-canceling technology. The digital modulator samples in the input signal, and its output is then digitized and provided in binary form.

The LTC2421IMS#TRPBF also integrates a low-phase noise oscillator to reduce the switching frequency noise, reducing the modulator noise floor. This allows the converter to achieve precision, low-power, and performance at the same time. The device also features built-in functions such as delay, watchdog timer and power-down, allowing designers to achieve low-power operation for cost-sensitive applications.

Conclusion

The LTC2421IMS#TRPBF is an analog-to-digital converter that is versatile and suitable for numerous applications. With its proprietary distortion-canceling technology, the LTC2421IMS#TRPBF enables designers to achieve precision and low-power operation, making it an ideal choice for industrial, medical, process control, and automotive markets.