Overview
The AD5628BCBZ-1-RL7 is a low-power, octal, 12-bit buffered voltage-output Digital-to-Analog Converter (DAC) produced by Analog Devices Inc. This device operates from a single 2.7 V to 5.5 V supply, making it versatile for various applications. It features a 3-wire serial interface compatible with standard SPI, QSPI, MICROWIRE, and DSP interface standards, allowing for high-speed communication up to 50 MHz. The AD5628BCBZ-1-RL7 is known for its precision and reliability, making it suitable for demanding environments.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Supply Voltage (VDD) | 2.7 | 5.5 | V | ||
| Internal Reference Voltage | 1.25 | 2.5 | V | Depending on the model variant | |
| Full-Scale Output Range | 2.5 | 5 | V | Depending on the internal reference used | |
| Resolution | 12 bits | ||||
| Output Voltage Settling Time | 2.5 | 7 | µs | ¼ to ¾ scale settling to ±2 LSB | |
| Power Consumption (Normal Mode) | 1.0 | 1.5 | 1.8 | mA | Internal reference off/on, VDD = 2.7 V to 3.6 V |
| Power Consumption (Power-Down Mode) | 0.2 | 1 | µA | VDD = 2.7 V to 3.6 V |
Key Features
- Low power consumption with normal mode current of 1.0 to 1.8 mA and power-down mode current of 0.2 to 1 µA.
- On-chip precision output amplifier enabling rail-to-rail output swing.
- On-chip reference with an internal gain of 2, and options for 1.25 V or 2.5 V references.
- Power-on reset circuit ensuring DAC output powers up to 0 V or midscale.
- Software-selectable power-down mode with output loads.
- Asynchronous CLR function to update all DACs to a user-programmable code.
- LDAC function for simultaneous update of all DAC channels.
- 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards, operating up to 50 MHz.
Applications
The AD5628BCBZ-1-RL7 is suitable for a variety of applications requiring precise and reliable digital-to-analog conversion. These include:
- Industrial control systems.
- Aerospace and defense systems.
- Medical devices.
- Automotive systems.
- Test and measurement equipment.
Q & A
- What is the resolution of the AD5628BCBZ-1-RL7 DAC? The AD5628BCBZ-1-RL7 has a resolution of 12 bits.
- What is the supply voltage range for the AD5628BCBZ-1-RL7? The supply voltage range is from 2.7 V to 5.5 V.
- What are the options for the internal reference voltage? The internal reference voltage options are 1.25 V and 2.5 V, each with a 5 ppm/°C temperature coefficient.
- How does the power-on reset circuit function? The power-on reset circuit 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 in normal and power-down modes? In normal mode, the power consumption is 1.0 to 1.8 mA, and in power-down mode, it is 0.2 to 1 µA.
- What interface standards is the AD5628BCBZ-1-RL7 compatible with? The device is compatible with SPI, QSPI, MICROWIRE, and DSP interface standards.
- What is the maximum clock rate for the serial interface? The serial interface operates at clock rates of up to 50 MHz.
- Does the AD5628BCBZ-1-RL7 support simultaneous update of all DAC channels? Yes, it supports simultaneous update of all DAC channels using the LDAC function.
- 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.
- Is the AD5628BCBZ-1-RL7 suitable for high-temperature environments? Yes, it operates over a temperature range of −40°C to +105°C.
