Overview
The AD7244JRZ, produced by Analog Devices Inc., is a fast, complete, dual 12-bit/14-bit voltage output Digital-to-Analog Converter (DAC). This device is part of the AD7242/AD7244 series and is known for its high performance and versatility. The AD7244JRZ features two independent DACs, each with a resolution of 14 bits, and includes output amplifiers and a high-speed serial interface. It operates from ±5 V power supplies, providing an analog output range of ±3 V, and can be driven by an on-chip 3 V reference or an external reference source.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 14 bits |
| Number of DAC Channels | 2 |
| Settling Time | 4 µs to ±1/2 LSB |
| Output Type | Voltage - Buffered |
| Data Interface | Serial (SPI) |
| Voltage Reference | Internal, External |
| Supply Voltage | ±5 V |
| Integral Nonlinearity Error (INL) | ±2 LSB (Max) |
| Differential Nonlinearity Error (DNL) | ±1 LSB (Max) |
| Architecture | R-2R |
| Operating Temperature | -40°C to +85°C |
| Package/Case | 28-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
| Power Dissipation | 195 mW (Max), Typically 130 mW |
Key Features
- Two 14-bit DACs with output amplifiers, allowing for high precision and stability in analog output.
- Fast settling time of 4 µs to ±1/2 LSB, ensuring rapid response to input changes.
- High-speed serial interface for efficient data transfer and control.
- On-chip 3 V reference or external reference source option, providing flexibility in system design.
- Operates from ±5 V power supplies with an analog output range of ±3 V.
- R-2R architecture for the DACs, ensuring high linearity and accuracy.
Applications
The AD7244JRZ is suitable for a variety of applications requiring high precision and fast response in digital-to-analog conversion. These include:
- Industrial control systems where precise analog outputs are necessary.
- Aerospace and defense applications requiring high reliability and performance.
- Medical devices that demand accurate and stable analog signals.
- Automotive systems where fast settling times and high precision are critical.
- Test and measurement equipment that require high-resolution analog outputs.
Q & A
- Q: What is the resolution of the AD7244JRZ DACs?
A: The AD7244JRZ features two 14-bit DACs.
- Q: What is the settling time of the AD7244JRZ?
A: The settling time is 4 µs to ±1/2 LSB.
- Q: What type of data interface does the AD7244JRZ use?
A: The AD7244JRZ uses a high-speed serial interface (SPI).
- Q: What are the power supply requirements for the AD7244JRZ?
A: The device operates from ±5 V power supplies.
- Q: What is the operating temperature range of the AD7244JRZ?
A: The operating temperature range is -40°C to +85°C.
- Q: What type of package is the AD7244JRZ available in?
A: The AD7244JRZ is available in a 28-SOIC package.
- Q: Does the AD7244JRZ have an internal voltage reference?
A: Yes, the AD7244JRZ has an on-chip 3 V reference, but it can also be driven by an external reference source.
- Q: What is the maximum power dissipation of the AD7244JRZ?
A: The maximum power dissipation is 195 mW, with a typical value of 130 mW.
- Q: Is the AD7244JRZ suitable for high-speed applications?
A: Yes, the AD7244JRZ is designed for high-speed applications with its fast settling time and high-speed serial interface.
- Q: Where can I find detailed information about the AD7244JRZ, such as application notes and factory information?
A: Detailed information can be found on the Analog Devices website, or through authorized distributors like Ovaga and Digi-Key.
