Overview
The AD5628ARUZ-2, produced by Analog Devices Inc., is a low-power, octal, 12-bit, buffered voltage-output Digital-to-Analog Converter (DAC). This device operates from a single 2.7 V to 5.5 V supply and is guaranteed monotonic by design. It is available in a 16-lead TSSOP package. The AD5628ARUZ-2 features an on-chip precision output amplifier that enables rail-to-rail output swing, making it suitable for a variety of applications requiring high precision and low power consumption.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Resolution | 12 bits | |
| Relative Accuracy | ±0.5 LSB | |
| Differential Nonlinearity | ±0.25 LSB | |
| Zero-Code Error | 6 mV | All 0s loaded to DAC register |
| Zero-Code Error Drift | ±2 µV/°C | |
| Full-Scale Error | -0.2% FSR | |
| Supply Voltage | 2.7 V to 5.5 V | |
| Current Consumption (Normal Mode) | 1.0 mA to 1.5 mA (VDD = 2.7 V to 3.6 V, internal reference off) | All digital inputs at 0 or VDD, DAC active, excludes load current |
| Current Consumption (Power-Down Mode) | 0.2 µA to 1 µA (VDD = 2.7 V to 3.6 V) | All eight DACs powered down |
| Operating Temperature Range | -40°C to +105°C | |
| Package Type | 16-lead TSSOP |
Key Features
- On-chip precision output amplifier enabling rail-to-rail output swing.
- On-chip reference with an internal gain of 2; options include 1.25 V and 2.5 V references with 5 ppm/°C temperature coefficient.
- Power-on reset circuit ensuring DAC output powers up to 0 V or midscale and remains at this level until a valid write takes place.
- Power-down feature reducing current consumption to 400 nA at 5 V with software-selectable output loads.
- Versatile 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP interface standards, operating at clock rates up to 50 MHz.
- Asynchronous CLR function to update all DACs to a user-programmable code—zero scale, midscale, or full scale.
- LDAC function for simultaneous update of all DAC outputs.
Applications
The AD5628ARUZ-2 is suitable for various applications requiring high precision, low power consumption, and multiple DAC channels. These include:
- Industrial control systems
- Aerospace and defense systems (specific models like AD5668-EP support AQEC standards)
- Medical devices
- Automotive systems
- Test and measurement equipment
Q & A
- What is the resolution of the AD5628ARUZ-2?
The AD5628ARUZ-2 has a resolution of 12 bits.
- What is the operating voltage range of the AD5628ARUZ-2?
The device operates from a single 2.7 V to 5.5 V supply.
- What types of packages are available for the AD5628ARUZ-2?
The AD5628ARUZ-2 is available in a 16-lead TSSOP package.
- What is the current consumption in normal mode?
The current consumption in normal mode is 1.0 mA to 1.5 mA (VDD = 2.7 V to 3.6 V, internal reference off).
- How does the power-down feature work?
The power-down feature reduces the current consumption to 0.2 µA to 1 µA at 5 V and provides software-selectable output loads while in power-down mode for any or all DAC channels.
- What is the temperature coefficient of the on-chip reference?
The on-chip reference has a temperature coefficient of 5 ppm/°C.
- What is the maximum clock rate of the serial interface?
The serial interface operates at clock rates up to 50 MHz.
- Is the AD5628ARUZ-2 guaranteed monotonic by design?
Yes, the AD5628ARUZ-2 is guaranteed monotonic by design.
- What is the purpose of the LDAC function?
The LDAC function allows for the simultaneous update of all DAC outputs.
- What is the asynchronous CLR function used for?
The asynchronous CLR function updates all DACs to a user-programmable code—zero scale, midscale, or full scale.
