AD7828BQ

Product Overview

Category: Integrated Circuit (IC)

Use: The AD7828BQ is a high-resolution, 8-channel analog-to-digital converter (ADC) designed for various applications that require precise and accurate conversion of analog signals into digital data. It is commonly used in industrial automation, medical equipment, instrumentation, and other electronic systems.

Characteristics: - High resolution: The AD7828BQ offers a resolution of 12 bits, allowing for precise measurement and conversion of analog signals. - Low power consumption: This ADC operates at low power levels, making it suitable for battery-powered devices or applications where power efficiency is crucial. - Fast conversion rate: With a maximum conversion rate of 200 kilosamples per second (ksps), the AD7828BQ ensures quick and efficient analog-to-digital conversion. - Wide input voltage range: It supports an input voltage range of 0 to Vref, providing flexibility in accommodating various signal levels. - Serial interface: The ADC utilizes a serial interface, enabling easy integration with microcontrollers or other digital devices. - Small package size: The AD7828BQ comes in a compact 16-lead quad flat package (QFP), making it suitable for space-constrained designs.

Package and Quantity: The AD7828BQ is available in a 16-lead QFP package. It is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Resolution: 12 bits
• Input Voltage Range: 0 to Vref
• Conversion Rate: Up to 200 ksps
• Interface: Serial
• Package Type: 16-lead QFP

Pin Configuration

The AD7828BQ has a total of 16 pins arranged as follows:

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| | | 1 2 3 4 | |_______________________| | | | 5 6 7 8 | |_______________________| | | | 9 10 11 12 | |_______________________| | | | 13 14 15 16 | |_______________________| ```

Pin Description: 1. VDD: Power supply voltage 2. AGND: Analog ground 3. REF: Reference voltage input 4. VREF: Reference voltage output 5. VIN0: Analog input channel 0 6. VIN1: Analog input channel 1 7. VIN2: Analog input channel 2 8. VIN3: Analog input channel 3 9. VIN4: Analog input channel 4 10. VIN5: Analog input channel 5 11. VIN6: Analog input channel 6 12. VIN7: Analog input channel 7 13. SCLK: Serial clock input 14. SDATA: Serial data input/output 15. CS: Chip select input 16. DGND: Digital ground

Functional Features

• High-resolution analog-to-digital conversion
• Low power consumption for energy-efficient operation
• Fast conversion rate for quick data acquisition
• Wide input voltage range for versatile signal compatibility
• Serial interface for easy integration with digital systems
• Compact package size for space-constrained designs

Advantages and Disadvantages

Advantages: - High resolution enables accurate measurement and conversion of analog signals. - Low power consumption makes it suitable for battery-powered devices. - Fast conversion rate allows for quick data acquisition. - Wide input voltage range provides flexibility in signal level compatibility. - Serial interface simplifies integration with digital systems. - Compact package size allows for space-efficient designs.

Disadvantages: - Limited to 8 analog input channels. - Requires an external reference voltage source.

Working Principles

The AD7828BQ operates by converting analog signals into digital data using a successive approximation register (SAR) architecture. It samples the analog input voltage and compares it to a reference voltage. The converter then generates a digital output code that represents the magnitude of the input voltage. This process is repeated for each channel, allowing for simultaneous conversion of multiple analog signals.

Detailed Application Field Plans

The AD7828BQ finds applications in various fields, including:

1. Industrial Automation: Used for monitoring and control systems, data acquisition, and process control in industrial settings.
2. Medical Equipment: Enables precise measurement and conversion of vital signs, patient monitoring, and medical instrumentation.
3. Instrumentation: Utilized in scientific instruments, test and measurement equipment, and laboratory devices for accurate data acquisition.
4. Consumer Electronics: Integrated into audio systems, multimedia devices, and other consumer electronics requiring analog-to-digital conversion.
5. Automotive: Used in