Overview
The AD5544ARS, produced by Analog Devices Inc., is a quad, 16-bit, current-output, digital-to-analog converter (DAC). This device is designed to operate within a supply voltage range of 2.7 V to 5.5 V, making it versatile for various applications. The AD5544ARS features four independent DACs, each with its own multiplying reference input, allowing for precise control over output currents. The device uses a 3-wire, SPI-compatible serial data interface, which is also compatible with microcontrollers, facilitating high-speed data transfer. Additionally, it includes integrated feedback resistors and an internal power-on reset, ensuring reliable and accurate analog output.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 2.7 to 5.5 | V |
| Resolution | 16-bit | - |
| Number of DACs | 4 | - |
| Reference Input Voltage Range | -15 to +15 | V |
| Reference Input Resistance | 5 kΩ ± 30% | Ω |
| Package Type | 28-Lead SSOP | - |
| Serial Interface | 3-wire, SPI-compatible | - |
| Data Word Length | 18 bits | - |
Key Features
- High-Speed Serial Interface: The AD5544ARS uses a 3-wire, SPI-compatible serial data interface, enabling high-speed data transfer and compatibility with microcontrollers.
- Integrated Feedback Resistors: These resistors provide temperature-tracking, full-scale voltage outputs when combined with an external I-to-V precision amplifier.
- Double-Buffered Data Interface: Allows for simultaneous update of all DAC outputs from previously loaded input registers using the LDAC input.
- Internal Power-On Reset: Forces the output voltage to 0 at system turn-on, ensuring reliable startup.
- Daisy-Chaining Capability: The serial data out pin (SDO) allows for daisy-chaining when multiple packages are used.
Applications
The AD5544ARS is suitable for a variety of applications that require precise analog output control, such as:
- Industrial Control Systems: For controlling and monitoring industrial processes.
- Medical Devices: In medical equipment that requires accurate analog signals.
- Aerospace and Defense: The AD5544-EP version supports defense and aerospace applications, adhering to AQEC standards.
- Automotive Systems: For applications requiring robust and reliable analog output in automotive environments.
Q & A
- What is the supply voltage range of the AD5544ARS?
The supply voltage range is from 2.7 V to 5.5 V.
- How many DACs are integrated into the AD5544ARS?
The device includes four independent DACs.
- What is the resolution of the AD5544ARS?
The resolution is 16 bits.
- What type of serial interface does the AD5544ARS use?
The device uses a 3-wire, SPI-compatible serial data interface.
- Can the AD5544ARS be daisy-chained?
- What is the purpose of the integrated feedback resistors?
The integrated feedback resistors provide temperature-tracking, full-scale voltage outputs when combined with an external I-to-V precision amplifier.
- How does the internal power-on reset function work?
The internal power-on reset forces the output voltage to 0 at system turn-on, ensuring reliable startup.
- What is the significance of the LDAC input?
The LDAC input allows for the simultaneous update of all DAC outputs from previously loaded input registers.
- What is the reference input voltage range for the AD5544ARS?
The reference input voltage range is from -15 V to +15 V.
- What type of package is the AD5544ARS available in?
The device is available in a 28-Lead SSOP package.
