Overview
The AD5321BRMZ is a 12-bit, buffered, voltage-output digital-to-analog converter (DAC) manufactured 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. The AD5321 features an on-chip output amplifier that provides rail-to-rail output swing with a slew rate of 0.7 V/μs. It uses a 2-wire (I2C-compatible) serial interface, allowing multiple devices to share the same bus. The device is available in an 8-lead MSOP package, making it suitable for a variety of applications requiring precision and low power consumption.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Description |
|---|---|---|---|---|---|
| VDD | 2.5 | - | 5.5 | V | Supply Voltage |
| Resolution | - | - | - | 12 bits | Number of bits |
| IDD (Normal Mode) | 115 | - | 250 | μA | Current consumption at VDD = 2.7 V to 5.5 V |
| IDD (Power-Down Mode) | 0.05 | - | 1 | μA | Current consumption in power-down mode |
| Settling Time | - | - | 10 | μs | Time to settle to final output value |
| Output Type | - | - | - | Voltage - Buffered | Type of output |
| INL/DNL | ±2 | - | ±0.3 | LSB | Integral and differential nonlinearity |
| Operating Temperature | -40 | - | 105 | °C | Temperature range for operation |
| Data Interface | - | - | - | I2C | Type of data interface |
Key Features
- Rail-to-Rail Output Swing: The on-chip output amplifier provides rail-to-rail output swing, ensuring maximum output range.
- Low Power Consumption: The device consumes only 120 μA at 3 V, making it suitable for battery-powered applications.
- 2-Wire Serial Interface: The I2C-compatible interface allows for easy communication and multiple devices can share the same bus.
- Power-Down Modes: Three programmable power-down modes are available, reducing power consumption when the DAC is not in use.
- Precision Output: The DAC features high precision with integral and differential nonlinearity of ±2 LSB and ±0.3 LSB, respectively.
- Wide Operating Temperature Range: The device operates from -40°C to 105°C, making it suitable for a variety of environmental conditions.
Applications
- Portable Battery-Powered Instruments: Ideal for devices that require low power consumption and precision output.
- Digital Gain and Offset Adjustment: Can be used to adjust gain and offset in various analog circuits.
- Programmable Voltage and Current Sources: Suitable for applications requiring programmable voltage or current outputs.
- Programmable Attenuators: Can be used in signal processing applications where attenuation needs to be programmable.
Q & A
- What is the supply voltage range of the AD5321BRMZ?
The AD5321BRMZ operates from a single supply voltage ranging from 2.5 V to 5.5 V.
- What is the current consumption of the AD5321BRMZ at 3 V?
The device consumes 120 μA at 3 V.
- What type of data interface does the AD5321BRMZ use?
The AD5321BRMZ uses a 2-wire (I2C-compatible) serial interface.
- What is the resolution of the AD5321BRMZ?
The AD5321BRMZ is a 12-bit DAC.
- What are the power-down modes available in the AD5321BRMZ?
The device has three programmable power-down modes to reduce power consumption when not in use.
- What is the settling time of the AD5321BRMZ?
The settling time is 10 μs.
- What is the operating temperature range of the AD5321BRMZ?
The device operates from -40°C to 105°C.
- What is the type of output provided by the AD5321BRMZ?
The output is a buffered voltage output.
- What are the typical applications of the AD5321BRMZ?
It is used in portable battery-powered instruments, digital gain and offset adjustment, programmable voltage and current sources, and programmable attenuators.
- What is the package type of the AD5321BRMZ?
The device is available in an 8-lead MSOP package.
