AD7718BRUZ

Product Overview

Category

AD7718BRUZ belongs to the category of analog-to-digital converters (ADCs).

Use

The AD7718BRUZ is used for converting analog signals into digital data. It is commonly employed in various applications that require precise and accurate conversion of analog signals.

Characteristics

• High resolution: The AD7718BRUZ offers a high-resolution conversion, allowing for accurate representation of analog signals.
• Low power consumption: This ADC is designed to operate with low power consumption, making it suitable for battery-powered devices.
• Wide input voltage range: The AD7718BRUZ can handle a wide range of input voltages, enabling it to accommodate different signal levels.
• Fast conversion speed: With its fast conversion speed, this ADC can efficiently process analog signals in real-time applications.

Package

The AD7718BRUZ comes in a small outline integrated circuit (SOIC) package.

Essence

The essence of the AD7718BRUZ lies in its ability to convert analog signals into digital data with high precision and accuracy.

Packaging/Quantity

The AD7718BRUZ is typically available in reels containing a quantity of 250 units per reel.

Specifications

• Resolution: 24 bits
• Input Voltage Range: ±10V
• Conversion Speed: Up to 4.17 kHz
• Interface: Serial Peripheral Interface (SPI)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The AD7718BRUZ has a total of 28 pins. Here is the detailed pin configuration:

1. VREF1: Reference voltage input for Channel 1
2. VREF2: Reference voltage input for Channel 2
3. AIN1: Analog input for Channel 1
4. AIN2: Analog input for Channel 2
5. AGND: Analog ground
6. DVDD: Digital power supply
7. DGND: Digital ground
8. SCLK: Serial clock input
9. DIN: Serial data input
10. DOUT: Serial data output
11. CS: Chip select input
12. RDY: Ready output
13. REFIN1: Reference voltage input for Channel 1
14. REFIN2: Reference voltage input for Channel 2
15. VBIAS: Bias voltage output
16. AVDD: Analog power supply
17. RESET: Reset input 18-28: Reserved

Functional Features

The AD7718BRUZ offers the following functional features:

• Simultaneous Sampling: It can simultaneously sample two analog channels, allowing for parallel conversion of multiple signals.
• Programmable Gain Amplifier (PGA): The ADC includes a PGA that enables amplification of weak input signals, enhancing the overall sensitivity and accuracy of the conversion process.
• On-Chip Temperature Sensor: The AD7718BRUZ incorporates an on-chip temperature sensor, providing accurate temperature measurements alongside analog-to-digital conversion.

Advantages and Disadvantages

Advantages

• High resolution ensures precise and accurate conversion of analog signals.
• Low power consumption makes it suitable for battery-powered devices.
• Wide input voltage range accommodates different signal levels.
• Fast conversion speed allows for real-time processing of analog signals.

Disadvantages

• Limited number of analog input channels (two channels).
• Requires external components for proper operation.

Working Principles

The AD7718BRUZ operates based on the principle of successive approximation. It samples the analog input voltage, compares it to a reference voltage, and iteratively adjusts the digital representation until it converges to the closest possible value. This process is repeated for each channel, resulting in accurate digital representations of the analog signals.

Detailed Application Field Plans

The AD7718BRUZ finds applications in various fields, including:

1. Industrial Automation: It is used for precise measurement and control of analog signals in industrial automation systems.
2. Medical Devices: The ADC is employed in medical devices that require accurate conversion of physiological signals.
3. Instrumentation: It is utilized in scientific instruments for high-resolution data acquisition and analysis.
4. Energy Management: The AD7718BRUZ plays a role in energy management systems by converting analog signals from sensors and meters.
5. Automotive Electronics: It finds application in automotive electronics for signal processing and control.

Detailed and Complete Alternative Models

• AD7790: A 24-bit ADC with similar characteristics and functionality to the AD7718BRUZ.
• ADS124S08: An 8-channel, 24-bit ADC suitable for applications requiring multiple input channels.
• MCP3551: A low-power, 22-bit ADC offering high accuracy and resolution.

These alternative models provide similar capabilities and can be considered as alternatives to the AD7718BRUZ based on specific