Overview
The AD7248JNZ is a 12-bit, voltage output, digital-to-analog converter (DAC) produced by Analog Devices Inc. This component is part of the AD7245A/AD7248A family and is designed for high-performance applications. It features a monolithic CMOS chip with an on-chip Zener voltage reference and output amplifier, eliminating the need for external user trims to achieve full specified performance. The AD7248JNZ 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 tasks.
Key Specifications
| Parameter | Value | Unit | Conditions |
|---|---|---|---|
| Resolution | 12 bits | - | - |
| Max Dual Supply Voltage | 15.75 V | V | - |
| Max Input Voltage | 5 V | V | - |
| Max Operating Temperature | 125 °C | °C | - |
| Max Output Voltage | 10 V | V | - |
| Chip Select Pulsewidth | 80 ns (min), 100 ns (typ) | ns | TMIN to TMAX |
| Write Pulsewidth | 80 ns (min), 100 ns (typ) | ns | TMIN to TMAX |
| Data Valid to Write Setup Time | 40 ns (typ) | ns | TMIN to TMAX |
Key Features
- High-Speed Interface: The AD7248JNZ features high-speed data latches and double-buffered interface logic, ensuring fast data transfer and minimal latency.
- On-Chip Reference and Amplifier: The component includes an on-chip Zener voltage reference and output amplifier, which simplifies the design and eliminates the need for external components.
- Microprocessor Compatibility: The DAC is designed to be compatible with microprocessors, making it easy to integrate into various digital systems.
- Extended Temperature Range: The AD7248JNZ operates over an extended temperature range, making it suitable for both commercial and industrial applications.
- Asynchronous LDAC Signal: The asynchronous LDAC signal allows for the transfer of data from the input latch to the DAC latch, updating the analog output without synchronizing with the system clock.
Applications
The AD7248JNZ is versatile and can be used in a variety of applications, including:
- Industrial Control Systems: For precise control and monitoring in industrial environments.
- Medical Devices: Where high accuracy and reliability are crucial.
- Aerospace and Defense: For applications requiring high performance and reliability over a wide temperature range.
- Automotive Systems: For control and monitoring in automotive electronics.
- Test and Measurement Equipment: For generating precise analog signals in testing and measurement applications.
Q & A
- What is the resolution of the AD7248JNZ DAC?
The AD7248JNZ has a resolution of 12 bits. - What is the maximum dual supply voltage for the AD7248JNZ?
The maximum dual supply voltage is 15.75 V. - What is the maximum operating temperature for the AD7248JNZ?
The maximum operating temperature is 125 °C. - Does the AD7248JNZ require external user trims?
No, the AD7248JNZ does not require external user trims to achieve full specified performance. - How does the LDAC signal work in the AD7248JNZ?
The LDAC signal is an asynchronous input that transfers data from the input latch to the DAC latch, updating the analog output. - Is the AD7248JNZ microprocessor compatible?
Yes, the AD7248JNZ is designed to be microprocessor compatible. - What type of interface logic does the AD7248JNZ use?
The AD7248JNZ uses high-speed data latches and double-buffered interface logic. - What is the purpose of the on-chip Zener voltage reference?
The on-chip Zener voltage reference provides a stable reference voltage for the DAC, eliminating the need for external reference components. - Can the AD7248JNZ operate in bipolar output mode?
Yes, the AD7248JNZ can be configured for bipolar outputs. - What is the typical chip select pulsewidth for the AD7248JNZ?
The typical chip select pulsewidth is 100 ns.
