AD7948BR

Product Overview

Category

AD7948BR belongs to the category of Analog-to-Digital Converters (ADCs).

Use

The AD7948BR is used for converting analog signals into digital data. It is commonly employed in various applications where precise and accurate conversion of analog signals is required.

Characteristics

• High resolution: The AD7948BR offers a high-resolution conversion, ensuring 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.
• Fast conversion speed: The AD7948BR provides fast conversion times, enabling real-time processing of analog signals.
• Wide input voltage range: It supports a wide input voltage range, allowing for versatile usage across different signal levels.

Package

The AD7948BR comes in a small form factor package, which ensures easy integration into electronic circuits.

Essence

The essence of the AD7948BR lies in its ability to convert analog signals into digital data with high precision and efficiency.

Packaging/Quantity

The AD7948BR is typically available in tape and reel packaging, with a quantity of 250 units per reel.

Specifications

• Resolution: 12 bits
• Input Voltage Range: ±10V
• Conversion Time: 1.5μs
• Power Supply: 2.7V to 5.25V
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The AD7948BR has a total of 16 pins, each serving a specific function. The pin configuration is as follows:

1. VDD: Power supply voltage
2. VREF: Reference voltage input
3. AGND: Analog ground
4. VIN(0): Analog input channel 0
5. VIN(1): Analog input channel 1
6. VIN(2): Analog input channel 2
7. VIN(3): Analog input channel 3
8. VIN(4): Analog input channel 4
9. VIN(5): Analog input channel 5
10. VIN(6): Analog input channel 6
11. VIN(7): Analog input channel 7
12. CS: Chip select input
13. SCLK: Serial clock input
14. SDATA: Serial data output
15. DGND: Digital ground
16. VDD: Power supply voltage

Functional Features

• Simultaneous Sampling: The AD7948BR can simultaneously sample multiple analog channels, allowing for efficient data acquisition.
• Serial Interface: It utilizes a serial interface for communication, enabling easy integration with microcontrollers and other digital devices.
• Low Noise Performance: The ADC exhibits low noise characteristics, ensuring accurate conversion even in noisy environments.
• Internal Reference: The AD7948BR incorporates an internal reference voltage, eliminating the need for an external reference source.

Advantages and Disadvantages

Advantages

• High resolution and accuracy
• Low power consumption
• Fast conversion speed
• Wide input voltage range
• Simultaneous sampling capability

Disadvantages

• Limited number of analog input channels
• Requires an external microcontroller or digital device for data processing

Working Principles

The AD7948BR operates based on the successive approximation method. It samples the analog input voltage and compares it to a reference voltage. By iteratively adjusting the digital code, it converges to the most accurate representation of the analog signal.

Detailed Application Field Plans

The AD7948BR finds applications in various fields, including but not limited to: - Industrial automation - Medical equipment - Test and measurement instruments - Data acquisition systems - Audio processing

Detailed and Complete Alternative Models

1. AD7947: Similar to AD7948BR but with 10-bit resolution
2. AD7949: Similar to AD7948BR but with 14-bit resolution
3. AD7980: Higher resolution ADC with 16-bit resolution
4. AD7606: Multi-channel ADC with simultaneous sampling capability

These alternative models offer different resolutions and features, allowing users to choose the most suitable option for their specific requirements.

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