Overview
The AD5544ARSZ is a quad, 16-bit, current-output, digital-to-analog converter (DAC) manufactured by Analog Devices Inc. This device is part of the AD5544/AD5554 family, which also includes 14-bit versions. The AD5544ARSZ operates from a 2.7 V to 5.5 V supply range and features a high-speed, 3-wire, SPI-compatible serial data interface. It is designed for applications requiring precise digital-to-analog conversion and is available in a compact 28-lead SSOP package.
Key Specifications
| Parameter | Specification |
|---|---|
| Resolution | 16 bits |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Reference Input Voltage Range | -15 V to +15 V |
| Output Current Range | Determined by external reference input voltage (VREFx) |
| Serial Interface | 3-wire, SPI-compatible (SDI, CS, CLK) |
| Package Type | 28-lead SSOP |
| Integrated Feedback Resistors | Temperature-tracking, full-scale voltage outputs with external I-to-V precision amplifier |
| Power-On Reset | Forces output voltage to 0 at system turn-on |
Key Features
- High-speed, double-buffered serial data interface compatible with SPI and microcontrollers.
- Integrated feedback resistors (RFB) for temperature-tracking, full-scale voltage outputs when combined with an external I-to-V precision amplifier.
- Serial data out pin (SDO) for daisy-chaining multiple packages.
- Common, level-sensitive, load DAC strobe (LDAC) input for simultaneous update of all DAC outputs.
- Internal power-on reset forces output voltage to 0 at system turn-on.
- Asynchronous input RS pin for hardware control over preset function and DAC register loading.
Applications
The AD5544ARSZ is suitable for a variety of applications that require precise digital-to-analog conversion, including:
- Industrial control systems
- Aerospace and defense applications (AD5544-EP supports AQEC standard).
- Automotive systems
- Medical devices
- Test and measurement equipment
Q & A
- What is the resolution of the AD5544ARSZ DAC?
The AD5544ARSZ has a resolution of 16 bits).
- What is the supply voltage range for the AD5544ARSZ?
The AD5544ARSZ operates from a 2.7 V to 5.5 V supply range).
- How does the reference input voltage affect the output current?
The applied external reference input voltage (VREFx) determines the full-scale output current).
- What type of serial interface does the AD5544ARSZ use?
The AD5544ARSZ uses a 3-wire, SPI-compatible serial data interface).
- 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 power-on reset function work?
The internal power-on reset forces the output voltage to 0 at system turn-on).
- Can multiple AD5544ARSZ devices be daisy-chained?
Yes, multiple devices can be daisy-chained using the serial data out pin (SDO)).
- What is the function of the asynchronous RS pin?
The asynchronous RS pin allows hardware control over the preset function and DAC register loading, forcing all registers to either the zero-code state or the half-scale code).
- In what package is the AD5544ARSZ available?
The AD5544ARSZ is available in a 28-lead SSOP package).
- Are there any specific grounding recommendations for the AD5544ARSZ?
Yes, the DGND and AGNDx pins should be joined remotely at a single point to the analog ground plane to minimize digital ground bounce).
