LTC2377IMS-20#TRPBF

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Data acquisition is an essential step in many digital systems and processes, ranging from storing digital data to finding the expected output given a certain input. Analog to Digital Converters (ADC) are devices used to convert an analog signal to a digital signal. The LTC2377IMS-20#TRPBF is a dual-channel 16-Bit 250kSPS ADC from Linear Technology. Its application field and working principles are discussed below.

Application Field

The LTC2377IMS-20#TRPBF is commonly used in audio systems, instrumentation and medical applications. This ADC is especially useful for systems which require precision analog to digital conversion, as well as high sample rate, such as communications, radar and seismic systems. This ADC is also well-suited for power line communication, process control, and switched-mode power applications.

Working Principle

At its core, the LTC2377IMS-20#TRPBF is a differential input sampling ADC. This means that it takes a differential analog input and converts it to digital data using successive approximation. The ADC features two input channels and can sample up to 250k samples per second. Each channel can convert a differential input voltage range of 200mV typical with 100mV minimum resolution.

The ADC also features two power modes: Active mode, which is the default mode, and Power Down mode. In Active mode, the operating current is rated at 48mA typical for the Dual Channel speed grade. In Power Down mode, the current consumption decreases to less than 2µA.

The LTC2377IMS-20#TRPBF ADC has an integrated reference voltage, which is subject to an offset voltage error of 0.5mV (max). Its settling time is 2.5µs typical and its signal-to-noise-plus-distortion (SNRD) performance is -80dB typ. Overall, the LTC2377IMS-20#TRPBF is a high-performance, low-power device well-suited for precision data acquisition in demanding audio, medical, industrial, and communications applications.

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