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12-bit 8-channel 1 MSPS SAR ADC with integrated MUX/S/H and single 2.7V-5.25V supply

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12-bit 8-channel 1 MSPS SAR ADC with integrated MUX/S/H and single 2.7V-5.25V supply

Manufacturer : Analog Devices Inc.

Product Number : AD7928BRUZ

Description : IC ADC 12BIT SAR 20TSSOP

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Core Functionality

The AD7928BRUZ is a 12-bit, 8-channel successive approximation register (SAR) analog-to-digital converter (ADC) designed for high-precision, low-power signal conversion. It operates with a single 2.7V to 5.25V power supply and features a maximum sampling rate of 1 MSPS (mega samples per second), delivering 12-bit resolution with ±1 LSB INL (Integral Nonlinearity) and ±0.5 LSB DNL (Differential Nonlinearity) for accurate signal digitization. The device integrates an 8-channel analog multiplexer (MUX) and a sample-and-hold (S/H) circuit, enabling seamless switching between multiple analog input channels without external components. It supports both single-ended and differential input configurations, with a flexible input voltage range (0V to VREF or VREF/2) configurable via the reference pin. Additionally, the AD7928BRUZ incorporates a serial peripheral interface (SPI) with daisy-chain capability for easy integration into multi-device systems, and offers power-saving modes (auto-shutdown and standby) to minimize energy consumption in battery-powered applications.

Key Applications

Industrial Automation & Control Systems: Used for digitizing sensor signals (temperature, pressure, flow, position) in PLCs (Programmable Logic Controllers), DCS (Distributed Control Systems), and process monitoring equipment, enabling precise real-time data acquisition.
Instrumentation & Test Equipment: Ideal for portable oscilloscopes, data loggers, multimeters, and signal analyzers, where high resolution, fast sampling, and low power consumption are critical for accurate measurements.
Automotive Electronics: Suitable for automotive sensor interfaces (e.g., engine control units, battery management systems, infotainment devices) due to its wide supply voltage range and robust performance.
Medical Devices: Applied in patient monitoring systems, portable diagnostic tools, and medical imaging equipment, where high precision and low power consumption are essential for reliable operation.
Consumer Electronics: Integrated into smartphones, tablets, digital cameras, and wearable devices for analog signal conversion (e.g., audio, touch sensing, environmental sensing) with minimal power draw.
Communications Equipment: Used in base stations, modems, and wireless transceivers for signal processing and data conversion, leveraging its fast sampling rate and SPI compatibility for system integration.

12-bit 8-channel 1 MSPS SAR ADC with integrated MUX/S/H and single 2.7V-5.25V supply

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