AD7248AQ

Product Overview

Category

AD7248AQ belongs to the category of digital-to-analog converters (DACs).

Use

The AD7248AQ is used to convert digital signals into analog voltages. It finds applications in various electronic systems where precise analog outputs are required.

Characteristics

• High resolution: The AD7248AQ offers a resolution of 12 bits, allowing for accurate conversion of digital data.
• Low power consumption: It operates at low power levels, making it suitable for battery-powered devices.
• Fast settling time: The converter provides fast settling times, enabling quick response in dynamic applications.
• Wide operating voltage range: It can operate within a wide voltage range, enhancing its versatility.

Package

The AD7248AQ comes in a compact and industry-standard 24-pin dual in-line package (DIP). This package ensures easy integration into existing circuit designs.

Essence

The essence of the AD7248AQ lies in its ability to convert digital information into precise analog voltages, facilitating seamless communication between digital and analog systems.

Packaging/Quantity

The AD7248AQ is typically packaged in reels or tubes, with a quantity of 25 units per reel/tube.

Specifications

• Resolution: 12 bits
• Number of Channels: 8
• Supply Voltage Range: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Conversion Rate: 100 kSPS (Samples per Second)
• Interface: Serial, SPI-Compatible

Detailed Pin Configuration

The AD7248AQ features a 24-pin DIP package with the following pin configuration:

1. VREF
2. AGND
3. AOUT0
4. AOUT1
5. AOUT2
6. AOUT3
7. AOUT4
8. AOUT5
9. AOUT6
10. AOUT7
11. DGND
12. SCLK
13. DIN
14. SYNC
15. CS
16. VDD

Functional Features

• High accuracy: The AD7248AQ ensures accurate conversion of digital data into analog voltages, providing precise outputs.
• Low distortion: It minimizes distortion in the analog output signal, resulting in high-quality audio and video reproduction.
• Flexible interface: The serial interface allows for easy integration with microcontrollers and other digital systems.
• Daisy-chain capability: Multiple AD7248AQ devices can be connected in a daisy-chain configuration, simplifying system design.

Advantages and Disadvantages

Advantages

• High resolution and accuracy
• Low power consumption
• Fast settling time
• Wide operating voltage range
• Compact package size

Disadvantages

• Limited number of channels (8)
• Requires an external reference voltage (VREF)

Working Principles

The AD7248AQ operates based on the principle of binary-weighted resistor ladder network. It converts the digital input code into an equivalent analog voltage using this network. The digital input is processed by an internal digital-to-analog converter, which generates the corresponding analog output voltage.

Detailed Application Field Plans

The AD7248AQ finds applications in various fields, including:

1. Audio equipment: It can be used in audio mixers, amplifiers, and digital audio workstations to convert digital audio signals into analog voltages for audio playback.
2. Video systems: The AD7248AQ is suitable for video signal processing applications, such as video switchers, video routers, and video surveillance systems.
3. Industrial automation: It can be utilized in industrial control systems to generate precise analog control signals for motor speed control, temperature regulation, and process control.
4. Test and measurement: The AD7248AQ is commonly employed in test and measurement equipment, such as data acquisition systems and signal generators, to provide accurate analog outputs for testing purposes.

Detailed and Complete Alternative Models

1. AD5628: This 12-bit DAC from Analog Devices offers similar features and performance as the AD7248AQ but with a different pin configuration.
2. MAX5216: Maxim Integrated's MAX5216 is a 12-bit DAC that provides high accuracy and low power consumption, making it a suitable alternative to the AD7248AQ.
3. MCP4921: Microchip's MCP4921 is a 12-bit DAC with SPI interface, offering comparable performance to the AD7248AQ at a lower cost.

These alternative models can be considered based on specific application requirements and system constraints.

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