ADS7817EC/250

Product Overview

• Category: Analog-to-Digital Converter (ADC)
• Use: Converts analog signals into digital data for processing or storage
• Characteristics:
  • High-resolution ADC with 12-bit resolution
  • Low power consumption
  • Serial interface for easy integration with microcontrollers
  • Wide operating voltage range
• Package: EC package
• Essence: Provides accurate and reliable conversion of analog signals to digital format
• Packaging/Quantity: Available in tape and reel packaging, quantity varies based on supplier

Specifications

• Resolution: 12 bits
• Conversion Rate: Up to 200 kilosamples per second (ksps)
• Operating Voltage Range: 2.7V to 5.5V
• Power Consumption: Low power mode: 0.5mW, normal mode: 1.5mW
• Interface: Serial Peripheral Interface (SPI)
• Temperature Range: -40°C to +85°C

Pin Configuration

The ADS7817EC/250 has the following pin configuration:

1. VDD - Power supply voltage
2. GND - Ground reference
3. CS - Chip select input
4. DIN - Serial data input
5. DOUT - Serial data output
6. SCLK - Serial clock input
7. REF - Reference voltage input
8. AGND - Analog ground reference
9. VREF - Reference voltage output
10. CLK - Conversion clock output

Functional Features

• High-resolution conversion: The 12-bit resolution ensures accurate representation of analog signals.
• Low power consumption: The ADC operates in low power mode, making it suitable for battery-powered applications.
• Serial interface: The SPI interface allows easy integration with microcontrollers and other digital systems.
• Wide operating voltage range: The ADC can operate within a wide voltage range, providing flexibility in various applications.

Advantages and Disadvantages

Advantages: - High-resolution conversion for accurate data acquisition - Low power consumption for energy-efficient designs - Serial interface simplifies integration with microcontrollers - Wide operating voltage range enhances versatility

Disadvantages: - Limited to 12-bit resolution, may not be suitable for applications requiring higher precision - Requires external reference voltage for operation

Working Principles

The ADS7817EC/250 operates based on the successive approximation register (SAR) architecture. It samples the analog input voltage and converts it into a digital value using an internal comparator and a capacitive digital-to-analog converter (DAC). The conversion process is controlled by an internal clock and the serial interface.

Detailed Application Field Plans

The ADS7817EC/250 is commonly used in various applications, including:

1. Industrial automation: Monitoring and control systems that require accurate analog-to-digital conversion.
2. Data acquisition: Capturing analog signals from sensors or transducers for further processing or analysis.
3. Medical devices: Measurement and monitoring equipment that requires precise digital representation of analog signals.
4. Instrumentation: Test and measurement equipment that needs high-resolution ADCs for accurate measurements.
5. Consumer electronics: Audio processing, battery management, and other applications where analog signals need to be converted to digital format.

Alternative Models

• ADS7816: 10-bit resolution ADC with similar features
• ADS7818: 12-bit resolution ADC with additional features like a built-in temperature sensor

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