AD7828LNZ

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Analog to digital converters (ADC) are important components in many electronic devices and systems used in a variety of different industries. The AD7828LNZ is a high-performance, dual channel, 12-bit, precision ADCs. It is suitable for a broad variety of data acquisition applications, especially those requiring high accuracy, low power and flexibility.

The AD7828LNZ reduces system power consumption and cost by operating from a single 3.3 V power supply and eliminating the need for multiple reference voltages. The device offers low power consumption (< 6 mW) and low power standby (<200 μW) modes of operation. The AD7828LNZ can operate from a symmetric supply voltage or from a single +3.3V supply voltage, eliminating the need for dual supplies.

The AD7828LNZ uses successive approximation register (SAR) architecture, which includes a 12-bit digital-to-analog converter (DAC) coupled with the analog comparator. The signal of interest is the input to the ADC and is converted to a digital output word with a maximum of 12 bits of resolution. The SAR searches, through a sequence of digital codes, to find the most accurate digital representation of the analog input signal.

This device provides a high-speed drive ability of up to 1 MHz and achieves a conversion rate of up to 1 Msps. The high speed of operation makes it suitable for applications that require fast response, such as automotive and industrial controls, and medical imaging systems. The AD7828LNZ also offers excellent linearity performance including zero-scale drift, 1LSB differential nonlinearity, and 4LSB integral nonlinearity.

The AD7828LNZ also features an internal clock which eliminates the need for an external clock, thus reducing system complexity and cost. Its on-chip reference has an absolute maximum tolerance of ±10 mV and ensures accuracy and reliability over the entire temperature range. An analog input range of 0-5 V or 0-10 V is available, with an input impedance of 10kΩ within temperature limits. The device also has improved noise performance and a 10 mV common-mode rejection ratio, ensuring extremely accurate and robust data acquisition.

Overall, the AD7828LNZ is a low-power, high-performance dual channel, 12-bit precision ADC with excellent linearity performance, making it an ideal solution for data acquisition applications, especially those requiring high accuracy and low power. Its on-chip clock and reference provide further advantages in terms of cost, complexity and reliability.

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