LTC2378CMS-18#TRPBF Integrated Circuits (ICs)

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Data Acquisition - Analog to Digital Converters (ADC) has a variety of uses in different industries, ranging from industrial automation to consumer electronics. The LTC2378CMS-18#TRPBF is a high speed, low power ADC application, specifically designed for data acquisition applications. This application guide looks at the application field, basic working principle and features of this ADC.

Application Field

The LTC2378CMS-18#TRPBF can be used in a wide range of application fields. This high speed, low power ADC supports simultaneous sampling of two analog input signals that can be connected directly to the input pins. The high speed performance enables the ADC for use in data acquisition applications such as test and measurement, and monitoring of high speed machinery. Additionally, this ADC can be used in automotive, industrial, and audio applications, where precise analog-to-digital conversions and precise monitoring of sequential data are required.

Working Principle

The working principle of the LTC2378CMS-18#TRPBF is based on the successive approximation register (SAR) architecture. This ADC features a single-ended input channel, which is connected directly to the input pins. The ADC is capable of converting two analog signals simultaneously, each one into an 8-bit digital code, thereby generating a total of 16-bit digital output.

The operation of this ADC starts with the comparator\'s input receiving an external differential input signal. The comparator then compares this signal to a reference voltage built into the ADC, and outputs the digital code based on the result of the comparison. This SAR architecture is highly efficient, as it requires fewer external components than other ADC designs.

The ADC further includes an internal clock for the successive approximation cycle and an internal reference circuit for the comparator input. Additionally, the monotonicity of the ADC is ensured by the use of internal sample-and-hold circuitry.

Features

The LTC2378CMS-18#TRPBF provides users with a power efficient and cost effective solution for implementing high speed ADC in data acquisition applications. The main features of this ADC include:

• Low power consumption: 0.31 mW/channel when using 3.3V;
• High input impedance: 350 ohms;
• High speed operation: up to 3.2 MSPS, minimum settling time of 1.75µs;
• Simultaneous sampling;
• Built-in digital filter;
• Input capacitance of 75 pF;
• Low distortion: 5µV peak-to-peak noise, 0.25% differential nonlinearity (DNL), and 0.3% integral nonlinearity (INL)

The LTC2378CMS-18#TRPBF is a powerful and versatile ADC for data acquisition applications. With low power consumption and high input impedance, this ADC provides good performance for a variety of application fields. Additionally, its high speed operation combined with its built-in digital filter and low distortion make it an ideal choice for simultaneous sampling and precise monitoring of analog signals.

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