Overview
The AD5025BRUZ-REEL7 is a dual 12-bit digital-to-analog converter (DAC) produced by Analog Devices Inc. This component is part of the AD5025/AD5045/AD5065 family and is known for its high accuracy and low power consumption. It features a SPI interface and operates over a voltage range of 2.7 V to 5.5 V, making it versatile for various applications. The device includes a power-on reset circuit, ensuring the DAC output powers up to zero scale or midscale, and remains there until a valid write takes place. Additionally, it has a power-down feature that reduces current consumption to typically 400 nA at 5 V, and provides software-selectable output loads while in power-down mode.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Conditions/Comments |
|---|---|---|---|---|---|
| Resolution | 12 bits | ||||
| Operating Voltage | 2.7 | 5.5 | V | ||
| Output Voltage Settling Time (¼ to ¾ scale) | 5.8 | 8 | µs | RL = 5 kΩ, single-channel update including DAC calibration sequence | |
| Output Voltage Settling Time (¼ to ¾ scale) | 10.7 | 13 | µs | RL = 5 kΩ, all channel update including DAC calibration sequence | |
| Slew Rate | 1.5 | V/µs | |||
| Digital-to-Analog Glitch Impulse | 4 | nV-sec | 1 LSB change around major carry | ||
| Reference Feedthrough | -90 | dB | VREF = 3 V ± 0.86 V p-p, frequency = 100 Hz to 100 kHz | ||
| Power Consumption in Power-Down Mode | 400 | nA | At 5 V | ||
Key Features
- High Accuracy: Total unadjusted error of less than 2.5 mV.
- Low Power Consumption: Power-down feature reduces current consumption to typically 400 nA at 5 V.
- SPI Interface: Serial interface for communication and control.
- Power-On Reset: Ensures DAC output powers up to zero scale or midscale and remains there until a valid write takes place.
- Simultaneous Output Update: Outputs of all DACs can be updated simultaneously using the LDAC function.
- Asynchronous Clear: CLR input clears all DACs to a software-selectable code—zero, midscale, or full scale.
- Reference Buffer: On-chip reference buffer provided for external reference input.
- Rail-to-Rail Operation: Output amplifier has rail-to-rail operation.
Applications
- Industrial Control Systems: Suitable for applications requiring precise analog output control in industrial environments.
- Medical Devices: Used in medical equipment where high accuracy and low power consumption are critical.
- Aerospace and Defense: Applicable in systems that require reliable and accurate analog output.
- Automotive Systems: Can be used in automotive control systems that need precise analog signals.
- Test and Measurement Equipment: Ideal for equipment that requires high-precision analog outputs.
Q & A
- What is the resolution of the AD5025BRUZ-REEL7 DAC?
The AD5025BRUZ-REEL7 has a resolution of 12 bits.
- What is the operating voltage range of the AD5025BRUZ-REEL7?
The operating voltage range is from 2.7 V to 5.5 V.
- How much current does the AD5025BRUZ-REEL7 consume in power-down mode?
The device consumes typically 400 nA at 5 V in power-down mode.
- What is the settling time for the output voltage of the AD5025BRUZ-REEL7?
The settling time is 5.8 µs for single-channel update and 10.7 µs for all channel update, both to ±1 LSB accuracy.
- Does the AD5025BRUZ-REEL7 have a power-on reset feature?
- Can the outputs of all DACs be updated simultaneously?
- What is the purpose of the CLR input on the AD5025BRUZ-REEL7?
- Does the AD5025BRUZ-REEL7 have rail-to-rail operation?
- What interface does the AD5025BRUZ-REEL7 use for communication?
- What is the total unadjusted error of the AD5025BRUZ-REEL7?
