ADS7817E/250

Product Overview

• Category: Analog-to-Digital Converter (ADC)
• Use: Converts analog signals into digital data
• Characteristics:
  • High-resolution conversion
  • Low power consumption
  • Small form factor
  • Wide operating temperature range
• Packaging: Integrated Circuit (IC)
• Essence: Provides accurate and reliable analog-to-digital conversion
• Packaging/Quantity: Available in various package options, typically sold in reels or tubes

Specification Parameters

The ADS7817E/250 ADC offers the following complete parameter types:

1. Resolution: 12 bits
2. Sampling Rate: Up to 200 kilosamples per second (ksps)
3. Input Voltage Range: 0 to Vref
4. Power Supply Voltage: 2.7V to 5.25V
5. Operating Temperature Range: -40°C to +85°C
6. Interface: Serial Peripheral Interface (SPI)

Pin Configuration

The ADS7817E/250 features a standard pin configuration with the following pins:

1. VDD: Power supply voltage input
2. GND: Ground reference
3. CS: Chip select for SPI communication
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. IN+: Positive analog input
10. IN-: Negative analog input

Functional Characteristics

The functional characteristics of the ADS7817E/250 include:

• High-resolution conversion: The 12-bit resolution ensures accurate digitization of analog signals.
• Low power consumption: Designed for low-power applications, minimizing energy consumption.
• Fast sampling rate: Capable of sampling at rates up to 200 ksps, enabling real-time data acquisition.
• Flexible interface: Utilizes the SPI interface for easy integration with microcontrollers and other digital systems.
• Wide operating temperature range: Can operate reliably in extreme temperature conditions.

Advantages and Disadvantages

Advantages: - High-resolution conversion ensures precise measurement accuracy. - Low power consumption extends battery life in portable applications. - Small form factor allows for space-efficient designs. - Wide operating temperature range enables usage in various environments.

Disadvantages: - Limited input voltage range may not be suitable for certain applications requiring higher voltage inputs. - Requires external reference voltage for accurate conversions.

Working Principle

The ADS7817E/250 operates based on the successive approximation register (SAR) architecture. It converts analog signals into digital data by comparing the input voltage to a reference voltage and iteratively approximating the digital representation until the desired resolution is achieved.

Detailed Application Field Plans

The ADS7817E/250 finds application in various fields, including:

1. Industrial automation: Used for process control, data acquisition, and monitoring systems.
2. Medical devices: Enables accurate measurement and monitoring of vital signs and patient parameters.
3. Test and measurement equipment: Provides high-resolution digitization for precise measurements.
4. Consumer electronics: Integrated into audio systems, instrumentation, and other consumer devices.
5. Automotive: Utilized in vehicle diagnostics, sensor interfaces, and control systems.

Detailed Alternative Models

Some alternative models to the ADS7817E/250 include:

1. ADS7816: 10-bit resolution ADC with similar features.
2. ADS7822: 8-channel, 12-bit resolution ADC with differential inputs.
3. ADS7830: 8-channel, 8-bit resolution ADC with I2C interface.

Please note that the above alternatives are just a few examples, and there are several other ADCs available in the market with different specifications and features.

This concludes the encyclopedia entry for the ADS7817E/250 ADC.