Overview
The AD7248AAN is a 12-bit digital-to-analog converter (DAC) produced by Analog Devices Inc. This component is part of the AD7245A/AD7248A family, which features a voltage output DAC with an integrated output amplifier and a Zener voltage reference on a single monolithic CMOS chip. The AD7248AAN is designed for high-performance applications, requiring no external user trims to achieve full specified performance. It is microprocessor compatible and offers high-speed data latches and double-buffered interface logic, making it suitable for a variety of digital-to-analog conversion needs.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Data Bus Width | 8 bits (loaded in two write operations) |
| Supply Voltage | +15V (VDD), -15V (VSS) |
| Operating Temperature Range | -40°C to 85°C |
| Package Type | DIP (20 pins) |
| Power Consumption | Approximately 450 mW |
| Reference Voltage | On-chip buried Zener diode |
| Interface Logic | Double-buffered, asynchronous LDAC signal |
Key Features
- High-speed data latches and double-buffered interface logic for efficient data transfer.
- Integrated output amplifier and Zener voltage reference for stable output.
- No external user trims required for full specified performance.
- Microprocessor compatible with asynchronous LDAC signal for updating the analog output.
- Extended temperature range operation for commercial and industrial grades.
- Single supply operation with the output voltage having the same positive polarity as the reference voltage.
Applications
The AD7248AAN is suitable for various applications requiring high-precision digital-to-analog conversion, such as:
- Industrial control systems.
- Medical devices.
- Aerospace and defense systems.
- Automotive systems.
- Test and measurement equipment.
Q & A
- What is the resolution of the AD7248AAN DAC?
The AD7248AAN has a resolution of 12 bits. - How is data loaded into the AD7248AAN?
Data is loaded into the AD7248AAN through an 8-bit-wide data bus in two write operations. - What is the operating temperature range of the AD7248AAN?
The operating temperature range is -40°C to 85°C. - Does the AD7248AAN require external user trims?
No, the AD7248AAN does not require external user trims to achieve full specified performance. - What type of interface logic does the AD7248AAN use?
The AD7248AAN uses double-buffered interface logic with an asynchronous LDAC signal. - What is the power consumption of the AD7248AAN?
The power consumption is approximately 450 mW. - What type of package does the AD7248AAN come in?
The AD7248AAN comes in a DIP package with 20 pins. - Is the AD7248AAN microprocessor compatible?
Yes, the AD7248AAN is microprocessor compatible. - What is the reference voltage source for the AD7248AAN?
The reference voltage is provided by an on-chip buried Zener diode. - Can the AD7248AAN operate on a single supply?
Yes, the AD7248AAN can operate on a single supply with the output voltage having the same positive polarity as the reference voltage.
