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The AD7790 is a low-power, low-noise, 24-bit Sigma-Delta analog-to-digital converter (ADC) designed for measurements in instrumentation applications. This device includes a low-drift internal reference and a programmable gain amplifier (PGA), making it suitable for applications that require high precision and accuracy. Functions 1. 24-Bit Resolution: Delivers high resolution for precise measurements. 2. Integrated PGA: Amplifies small input voltages for improved measurement accuracy. 3. Internal Reference: Provides a stable voltage reference for ADC operation, reducing external component requirements. 4. Low Power Consumption: Suitable for battery-operated devices and portable applications. 5. Digital Filtering: Supports various filter settings for optimal ADC performance based on application needs. Applications 1. Industrial Process Control: Used in measurement and control devices within industrial automation systems. 2. Medical Instrumentation: Suitable for precision measurements in medical devices and diagnostics. 3. Weight Scales: Applications in digital weighing systems where high accuracy is critical. 4. Environmental Monitoring: Useful in sensors measuring environmental parameters such as pH, temperature, and more. 5. Data Acquisition Systems: Ideal for applications requiring high-performance data collection. Alternative Parts 1. AD7730: Another Sigma-Delta ADC from Analog Devices with different specifications. 2. AD7380: A successive approximation ADC that offers alternative performance characteristics. 3. MAX11200: An alternative from Maxim Integrated with a similar conversion architecture. 4. ADS124S08: Texas Instruments' device which competes in the same market segment. Embedded Modules The AD7790 may be available in evaluation board format or as part of integrated signal conditioning modules that utilize the ADC for specific applications. These may include: 1. Signal Conditioning Boards: Integrate the AD7790 with amplifiers, filters, and reference circuits. 2. Development Kits: Development platforms that include the AD7790 and other required components for prototyping. 3. Sensor Modules: Modules pre-configured with the AD7790 for use with specific sensor types, such as temperature or pressure sensors. Related Q&A Q1: What are the key features of the AD7790? A1: The AD7790 features a 24-bit Sigma-Delta ADC, integrated programmable gain amplifier, internal voltage reference, low power consumption, and digital filtering options. --- Q2: In what applications could the AD7790 be utilized effectively? A2: The AD7790 is effectively used in industrial process control, medical instrumentation, weight scales, environmental monitoring, and data acquisition systems. --- Q3: How does the integrated PGA benefit ADC performance in the AD7790? A3: The integrated PGA amplifies low-level signals before they are digitized, enhancing measurement accuracy and allowing the ADC to effectively capture small changes in input signal levels. --- Q4: What are some alternatives to the AD7790 for users looking for similar functionality? A4: Some alternatives include the AD7730, AD7380, MAX11200, and ADS124S08, which offer comparable performance in different specifications or architectures. --- Q5: Can I find embedded modules or evaluation boards for the AD7790? A5: Yes, the AD7790 is available as part of evaluation boards and embedded signal conditioning modules which facilitate its use in prototype development or specific application setups.