Overview
The AD5321BRM-REEL7 is a 12-bit, voltage-output digital-to-analog converter (DAC) produced by Analog Devices Inc. This device operates from a single supply voltage ranging from 2.5 V to 5.5 V and consumes a low current of 120 μA at 3 V. It features a 2-wire (I2C-compatible) serial interface, allowing for easy communication and control. The AD5321 is part of a family of DACs that include the AD5301 and AD5311, offering different resolutions but similar functionalities.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|
| Supply Voltage (VDD) | 2.5 | 5.5 | V | ||
| Current Consumption | 120 | μA | At 3 V | ||
| Resolution | 12 bits | ||||
| Slew Rate | 0.7 | V/μs | |||
| Output Voltage Settling Time | 6 | μs | Half-scale to ±0.5 LSB | ||
| Operating Temperature Range | -40 | 105 | °C | B Version | |
| Serial Interface Clock Rate | Up to 400 kHz | I2C-compatible |
Key Features
- Rail-to-Rail Output Swing: The on-chip output amplifier allows for rail-to-rail output swing, enhancing the device's versatility in various applications.
- Low Power Consumption: The device consumes a low current of 120 μA at 3 V, making it suitable for battery-operated and power-sensitive applications.
- 2-Wire Serial Interface: The I2C-compatible serial interface supports clock rates up to 400 kHz and allows multiple devices to share the same bus.
- Programmable Power-Down Modes: The DAC can be turned off completely or the output can be pulled low by an on-chip resistor, reducing power consumption in idle states.
- Power-On Reset: Ensures the DAC powers up in a defined state, with the DAC register filled with zeros until a valid write sequence is made.
Applications
- Portable Battery-Operated Equipment: The low power consumption makes it ideal for devices such as handheld instruments and portable medical devices.
- Industrial Control Systems: Suitable for use in control systems where precise analog output is required.
- Automotive Systems: Can be used in automotive applications due to its robust temperature range and reliability.
- Medical Devices: Applicable in medical equipment where accurate and stable analog outputs are crucial.
Q & A
- What is the supply voltage range of the AD5321BRM-REEL7?
The supply voltage range is from 2.5 V to 5.5 V.
- What is the resolution of the AD5321BRM-REEL7?
The resolution is 12 bits.
- What is the current consumption of the AD5321BRM-REEL7 at 3 V?
The current consumption is 120 μA.
- What type of serial interface does the AD5321BRM-REEL7 use?
The device uses an I2C-compatible 2-wire serial interface.
- What is the slew rate of the output amplifier?
The slew rate is 0.7 V/μs.
- Does the AD5321BRM-REEL7 have power-down modes?
Yes, it has programmable power-down modes to reduce power consumption.
- What is the operating temperature range of the AD5321BRM-REEL7?
The operating temperature range is from -40°C to 105°C.
- Does the AD5321BRM-REEL7 have a power-on reset feature?
Yes, it ensures the DAC powers up in a defined state.
- Can multiple AD5321BRM-REEL7 devices share the same bus?
Yes, multiple devices can share the same I2C bus.
- What is the typical output voltage settling time of the AD5321BRM-REEL7?
The typical output voltage settling time is 6 μs for a half-scale change.
