AD7788BRM

Product Overview

Category

AD7788BRM belongs to the category of Analog-to-Digital Converters (ADCs).

Use

The AD7788BRM 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 AD7788BRM offers a high-resolution conversion, allowing for precise measurement and analysis 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 AD7788BRM 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 AD7788BRM comes in a small form factor package, which makes it suitable for space-constrained designs.

Essence

The essence of the AD7788BRM lies in its ability to accurately convert analog signals into digital data, facilitating further processing and analysis.

Packaging/Quantity

The AD7788BRM is typically available in tape and reel packaging, with a quantity of 250 units per reel.

Specifications

• Resolution: 16 bits
• Input Voltage Range: ±VREF
• Conversion Rate: Up to 1 kSPS (Samples per Second)
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage: 2.7V to 5.25V

Detailed Pin Configuration

The AD7788BRM has the following pin configuration:

1. VDD: Power supply voltage
2. VREF: Reference voltage input
3. AIN(+): Positive analog input
4. AIN(-): Negative analog input
5. AGND: Analog ground
6. DVDD: Digital power supply voltage
7. DOUT/RDY: Data output/Ready signal
8. DIN: Serial data input
9. SCLK: Serial clock input
10. CS: Chip select input

Functional Features

• Differential Input: The AD7788BRM supports differential input, allowing for accurate measurement of the voltage difference between two signals.
• On-Chip Programmable Gain Amplifier (PGA): This ADC includes a PGA that can be configured to amplify the input signal, enhancing the resolution and accuracy of the conversion.
• Internal Voltage Reference: The AD7788BRM incorporates an internal voltage reference, eliminating the need for an external reference source.
• SPI Interface: It utilizes a Serial Peripheral Interface (SPI) for communication with microcontrollers or other digital devices.

Advantages and Disadvantages

Advantages

• High-resolution conversion for precise measurements
• Low power consumption for energy-efficient designs
• Wide input voltage range for versatile applications
• Fast conversion speed for real-time processing

Disadvantages

• Limited quantity per reel (250 units)
• Requires external components for complete functionality

Working Principles

The AD7788BRM operates based on the principle of successive approximation. It samples the analog input signal, compares it to a reference voltage, and iteratively adjusts the digital representation until it converges to the closest value. This process ensures accurate conversion of the analog signal into digital data.

Detailed Application Field Plans

The AD7788BRM finds applications in various fields, including: 1. Industrial automation: Used for precise measurement and control of analog signals in industrial processes. 2. Medical devices: Enables accurate conversion of physiological signals for diagnostic and monitoring purposes. 3. Instrumentation: Utilized in scientific instruments for high-resolution data acquisition and analysis. 4. Automotive systems: Provides analog-to-digital conversion for sensor signals in automotive applications. 5. Consumer electronics: Used in audio equipment, digital multimeters, and other consumer devices requiring analog-to-digital conversion.

Detailed and Complete Alternative Models

1. AD7787: Similar to the AD7788BRM but with a lower resolution of 14 bits.
2. AD7790: Offers higher resolution (24 bits) and additional features such as on-chip temperature measurement.
3. ADS1115: A 16-bit ADC with an I2C interface, suitable for applications requiring low-power operation.

These alternative models provide options with varying resolutions, interfaces, and additional features to cater to different application requirements.

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