Overview
The AD5628BRUZ-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 and features an on-chip reference with an internal gain of 2. The AD5628BRUZ-2 has a 2.5 V, 5 ppm/°C reference, providing a full-scale output range of 5 V. The device includes a power-on reset circuit and a power-down feature that significantly reduces current consumption to 400 nA at 5 V.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Conditions/Comments |
|---|---|---|---|---|---|
| Resolution | 12 | 12 | 12 | Bits | |
| Relative Accuracy | ±0.5 | ±1 | ±1 | LSB | See Figure 7 |
| Differential Nonlinearity | ±0.25 | ±0.25 | ±0.25 | LSB | Guaranteed monotonic by design |
| Zero-Code Error | 1 | 6 | 19 | mV | All 0s loaded to DAC register |
| Zero-Code Error Drift | ±2 | ±2 | ±2 | μV/°C | |
| Full-Scale Error | -0.2 | -1 | -1 | % FSR | All 1s loaded to DAC register |
| VDD | 2.7 | 3.6 | 5.5 | V | |
| IDD (Normal Mode) | 1.0 | 1.5 | 1.5 | mA | Internal reference off, VDD = 2.7 V to 3.6 V |
| IDD (All Power-Down Modes) | 0.2 | 1 | 1 | μA | VDD = 2.7 V to 3.6 V |
| Output Voltage Range | 0 | VDD | V | ||
| DC Output Impedance | 0.5 | 0.5 | 0.5 | Ω | |
| Short-Circuit Current | 30 | 30 | 30 | mA | VDD = 3 V |
Key Features
- Octal, 12-bit DAC with buffered voltage output
- Operates from a single 2.7 V to 5.5 V supply
- On-chip 2.5 V, 5 ppm/°C reference with internal gain of 2
- Available in 16-lead TSSOP package
- Guaranteed monotonic by design
- Power-on reset circuit to 0 V or midscale
- Power-down feature reducing current consumption to 400 nA at 5 V
- Software-selectable output loads in power-down mode
- Simultaneous update of all DAC outputs using LDAC function
- Asynchronous CLR to update all DACs to user-programmable code
- 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards, operating up to 50 MHz clock rates
- On-chip precision output amplifier enabling rail-to-rail output swing
Applications
- Industrial control systems
- Aerospace and defense systems
- Medical devices and equipment
- Automotive systems
- Test and measurement equipment
- Process control systems
Q & A
- What is the resolution of the AD5628BRUZ-2 DAC?
The AD5628BRUZ-2 has a resolution of 12 bits.
- What is the operating voltage range of the AD5628BRUZ-2?
The device operates from a single 2.7 V to 5.5 V supply.
- What type of reference does the AD5628BRUZ-2 have?
The AD5628BRUZ-2 has an on-chip 2.5 V, 5 ppm/°C reference with an internal gain of 2.
- What is the power consumption in normal mode and power-down mode?
In normal mode, the current consumption is typically 1.0 to 1.5 mA. In power-down mode, it reduces to 0.2 to 1 μA.
- What is the output voltage range of the AD5628BRUZ-2?
The output voltage range is from 0 V to VDD.
- Does the AD5628BRUZ-2 support simultaneous update of all DAC channels?
Yes, the device supports simultaneous update of all DAC channels using the LDAC function.
- What is the clock rate of the serial interface?
The 3-wire serial interface operates at clock rates up to 50 MHz and is compatible with standard SPI, QSPI, MICROWIRE, and DSP interface standards.
- What is the temperature range of the AD5628BRUZ-2?
The device operates over a temperature range of −40°C to +105°C.
- Does the AD5628BRUZ-2 have a power-on reset feature?
Yes, the device has a power-on reset circuit that ensures the DAC output powers up to 0 V or midscale.
- Can the AD5628BRUZ-2 be used with an external reference?
Yes, the on-board reference is off at power-up, allowing the use of an external reference. The internal reference can be enabled via a software write.
