Overview
The AD5628BRUZ-1, 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 features an on-chip precision output amplifier that enables rail-to-rail output swing, making it suitable for a variety of applications requiring precise voltage control.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12 bits |
| Number of DACs | Octal (8 channels) |
| Supply Voltage | 2.7 V to 5.5 V |
| On-Chip Reference | 1.25 V or 2.5 V, 5 ppm/°C |
| Full-Scale Output Range | 2.5 V (AD5628-1) or 5 V (AD5628-2) |
| Power-On Reset | 0 V or midscale |
| Power-Down Current | 400 nA at 5 V, 200 nA at 3 V |
| Serial Interface | 3-wire SPI, QSPI, MICROWIRE, DSP compatible, up to 50 MHz clock rate |
| Package | 14-lead TSSOP |
| Operating Temperature Range | -40°C to +105°C |
| Relative Accuracy | ±2 LSB |
| Differential Nonlinearity | ±0.5 LSB |
| Zero-Code Error | 6 mV to 19 mV |
| Full-Scale Error | -0.2% to -1% FSR |
Key Features
- Low power consumption with power-down capability to 400 nA at 5 V and 200 nA at 3 V.
- On-chip 1.25 V or 2.5 V reference with 5 ppm/°C temperature coefficient.
- Guaranteed monotonic by design.
- Power-on reset to 0 V or midscale.
- Software-selectable output loads in power-down mode.
- Simultaneous update of all DAC outputs using LDAC function.
- Asynchronous CLR function to update all DACs to a user-programmable code.
- Rail-to-rail output swing enabled by on-chip precision output amplifier.
- Compatible with standard SPI, QSPI, MICROWIRE, and DSP interface standards.
Applications
- Process control systems.
- Data acquisition systems.
- Portable battery-powered instruments.
- Digital gain and offset adjustment.
- Programmable voltage and current sources.
- Programmable attenuators.
Q & A
- What is the resolution of the AD5628BRUZ-1 DAC?
The AD5628BRUZ-1 has a resolution of 12 bits.
- What is the operating voltage range of the AD5628BRUZ-1?
The AD5628BRUZ-1 operates from a single 2.7 V to 5.5 V supply.
- What types of references are available on the AD5628BRUZ-1?
The AD5628BRUZ-1 has on-chip 1.25 V or 2.5 V references with a 5 ppm/°C temperature coefficient.
- How does the power-on reset function work on the AD5628BRUZ-1?
The power-on reset function ensures that the DAC output powers up to 0 V or midscale and remains at this level until a valid write takes place.
- What is the power consumption of the AD5628BRUZ-1 in power-down mode?
In power-down mode, the AD5628BRUZ-1 consumes typically 400 nA at 5 V and 200 nA at 3 V.
- What serial interfaces are supported by the AD5628BRUZ-1?
The AD5628BRUZ-1 supports 3-wire SPI, QSPI, MICROWIRE, and DSP interfaces with clock rates up to 50 MHz.
- What is the package type of the AD5628BRUZ-1?
The AD5628BRUZ-1 is available in a 14-lead TSSOP package.
- What is the operating temperature range of the AD5628BRUZ-1?
The AD5628BRUZ-1 operates over a temperature range of -40°C to +105°C.
- Is the AD5628BRUZ-1 guaranteed to be monotonic?
Yes, the AD5628BRUZ-1 is guaranteed monotonic by design.
- Can the outputs of all DACs be updated simultaneously on the AD5628BRUZ-1?
Yes, the outputs of all DACs can be updated simultaneously using the LDAC function.
