Overview
The AD5320BRM-REEL7 is a single, 12-bit buffered voltage output digital-to-analog converter (DAC) produced by Analog Devices Inc. This component operates from a single supply voltage ranging from 2.7 V to 5.5 V and consumes a low current of 115 μA at 3 V. It features an on-chip precision output amplifier that enables rail-to-rail output swing, making it suitable for a wide range of applications, particularly in portable, battery-operated equipment.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Description |
|---|---|---|---|---|---|
| Supply Voltage (VDD) | 2.7 | 5.5 | V | Operating supply voltage range | |
| Current Consumption (IDD) at 3 V | 115 | μA | Current consumption in normal operation | ||
| Power-Down Current (IDD) | 0.2 | 1 | μA | Current consumption in power-down mode (VDD = 4.5 V to 5.5 V) | |
| Resolution | 12 | bits | DAC resolution | ||
| Output Voltage Range | 0 | VDD | V | Rail-to-rail output voltage range | |
| Serial Clock Rate | 30 | MHz | Maximum serial clock rate | ||
| Temperature Range | -40 | 105 | °C | Operating temperature range (B Version) |
Key Features
- Rail-to-Rail Output: The AD5320 features an on-chip precision output amplifier that allows for rail-to-rail output swing, ensuring the widest dynamic output range.
- Low Power Consumption: The device consumes only 115 μA at 3 V and reduces to 1 μW in power-down mode, making it ideal for battery-operated equipment.
- Power-On Reset: The DAC output powers up to zero volts and remains there until a valid write takes place to the device.
- Power-Down Feature: The device can be put into power-down mode over the serial interface, reducing current consumption significantly.
- Versatile Serial Interface: Compatible with standard SPI, QSPI, MICROWIRE, and DSP interface standards, operating at clock rates up to 30 MHz.
- Software Selectable Output Loads: In power-down mode, the output loads can be software selected.
Applications
- Portable Battery-Powered Instruments: Ideal for devices that require low power consumption and high precision.
- Digital Gain and Offset Adjustment: Suitable for applications requiring precise gain and offset adjustments.
- Programmable Voltage and Current Sources: Can be used in systems that need programmable voltage or current outputs.
- Programmable Attenuators: Useful in applications requiring adjustable attenuation levels.
Q & A
- What is the operating supply voltage range of the AD5320?
The AD5320 operates from a single supply voltage ranging from 2.7 V to 5.5 V.
- What is the current consumption of the AD5320 at 3 V?
The current consumption is 115 μA at 3 V.
- What is the resolution of the AD5320 DAC?
The resolution is 12 bits.
- What is the output voltage range of the AD5320?
The output voltage range is rail-to-rail, from 0 V to VDD.
- What is the maximum serial clock rate for the AD5320?
The maximum serial clock rate is 30 MHz.
- Does the AD5320 have a power-on reset feature?
Yes, the DAC output powers up to zero volts and remains there until a valid write takes place to the device.
- How does the AD5320 reduce power consumption in power-down mode?
In power-down mode, the current consumption reduces to 1 μW.
- What interface standards is the AD5320 compatible with?
The AD5320 is compatible with standard SPI, QSPI, MICROWIRE, and DSP interface standards.
- Can the output loads be software selected in power-down mode?
Yes, the output loads can be software selected in power-down mode.
- What are some typical applications of the AD5320?
Typical applications include portable battery-powered instruments, digital gain and offset adjustment, programmable voltage and current sources, and programmable attenuators.
