Overview
The AD5544BRSZ from 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 AD5544BRSZ features a double-buffered serial data interface that is compatible with 3-wire SPI and microcontroller interfaces, using serial data in (SDI), chip select (CS), and clock (CLK) signals. Additionally, it includes a serial data out pin (SDO) for daisy-chaining multiple packages. The device is packaged in a compact 28-lead SSOP, which is suitable for space-constrained designs.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 16 |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Output Type | Current Output |
| Interface | SPI, Serial |
| Settling Time | 900 ns (Typical) |
| Integral Nonlinearity (INL) | 1 LSB |
| Polarity | Unipolar |
| Package | 28-SSOP (0.209, 5.30mm Width) |
| Number of Pins | 28 |
Key Features
- Quad 16-bit current-output DACs with independent multiplying reference inputs.
- Double-buffered serial data interface with SPI and microcontroller compatibility.
- Serial data out pin (SDO) for daisy-chaining multiple packages.
- Integrated feedback resistors (RFB) for temperature-tracking, full-scale voltage outputs when used with an external I-to-V precision amplifier.
- 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 AD5544BRSZ is suitable for a variety of applications that require precise digital-to-analog conversion, including:
- Industrial control systems.
- Aerospace and defense systems (AD5544-EP model supports AQEC standard).
- Automotive systems.
- Medical devices requiring high precision and reliability.
- Test and measurement equipment.
Q & A
- What is the supply voltage range of the AD5544BRSZ?
The AD5544BRSZ operates within a supply voltage range of 2.7 V to 5.5 V.
- What type of interface does the AD5544BRSZ use?
The AD5544BRSZ uses a double-buffered serial data interface compatible with 3-wire SPI and microcontrollers.
- How many bits does the AD5544BRSZ have?
The AD5544BRSZ is a 16-bit DAC.
- What is the typical settling time of the AD5544BRSZ?
The typical settling time is 900 ns.
- What is the package type of the AD5544BRSZ?
The AD5544BRSZ is packaged in a 28-lead SSOP.
- Does the AD5544BRSZ support daisy-chaining?
Yes, the AD5544BRSZ includes a serial data out pin (SDO) for daisy-chaining multiple packages.
- What is the purpose of the integrated feedback resistors (RFB)?
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.
- What is the role of the asynchronous input RS pin?
The asynchronous input RS pin allows hardware control over the preset function and DAC register loading, forcing all registers to either zero code or half-scale code.
- Is the AD5544BRSZ suitable for aerospace and defense applications?
Yes, the AD5544-EP model supports AQEC standard, making it suitable for aerospace and defense applications.
