Overview
The AD5320BRM, produced by Analog Devices Inc., is a single, 12-bit buffered voltage output digital-to-analog converter (DAC). It 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. This DAC features an on-chip precision output amplifier that enables rail-to-rail output swing, making it suitable for a variety of applications requiring precise voltage output. The device is part of a family of pin-compatible DACs and is known for its low power consumption, which is ideal for portable, battery-operated equipment.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Number of Bits | Resolution of the DAC | 12-bit |
| Supply Voltage | Range of the supply voltage | 2.7 V to 5.5 V |
| Current Consumption | Current at 3 V supply | 115 μA |
| Power-Down Current | Current in power-down mode at 5 V | 200 nA |
| Output Type | Type of output | Voltage - Buffered |
| Reference Type | Type of reference used | Supply |
| Settling Time | Time for the output to settle | 10 μs |
| Data Interface | Type of data interface | SPI, DSP |
| Operating Temperature | Range of operating temperature | -40°C to +105°C |
| Package/Case | Type of package | 8-TSSOP, 8-MSOP |
Key Features
- Rail-to-Rail Output: The AD5320BRM features an on-chip precision output amplifier that allows for rail-to-rail output swing, ensuring the full range of the supply voltage is utilized.
- Low Power Consumption: The device consumes only 115 μA at 3 V, making it ideal for battery-operated and portable applications.
- Power-Down Modes: The AD5320BRM includes power-down modes that reduce current consumption to 200 nA at 5 V, further enhancing its suitability for power-sensitive applications.
- Versatile Interface: The DAC uses a 3-wire serial interface compatible with standard SPI, QSPI, MICROWIRE, and DSP interface standards, operating at clock rates up to 30 MHz.
- Power-On Reset: The device includes a power-on reset circuit that ensures the DAC output powers up to zero volts and remains there until a valid write takes place.
Applications
- Portable Battery-Powered Instruments: The low power consumption makes the AD5320BRM suitable for use in portable, battery-operated instruments.
- Digital Gain and Offset Adjustment: It can be used for adjusting gain and offset in digital systems.
- Programmable Voltage and Current Sources: The DAC can be used to create programmable voltage and current sources due to its precise output control.
- Programmable Attenuators: It is also applicable in programmable attenuators where precise voltage control is necessary.
Q & A
- What is the resolution of the AD5320BRM DAC?
The AD5320BRM is a 12-bit DAC.
- What is the supply voltage range for the AD5320BRM?
The supply voltage range is from 2.7 V to 5.5 V.
- How much current does the AD5320BRM consume at 3 V?
The device consumes 115 μA at 3 V.
- What is the settling time of the AD5320BRM?
The settling time is 10 μs.
- What types of interfaces does the AD5320BRM support?
The AD5320BRM supports SPI, QSPI, MICROWIRE, and DSP interface standards.
- What is the operating temperature range of the AD5320BRM?
The operating temperature range is from -40°C to +105°C.
- Does the AD5320BRM have a power-on reset feature?
Yes, the AD5320BRM includes a power-on reset circuit that ensures the DAC output powers up to zero volts.
- What are the power-down modes of the AD5320BRM?
The device has power-down modes that reduce current consumption to 200 nA at 5 V.
- What type of output does the AD5320BRM provide?
The AD5320BRM provides a buffered voltage output.
- Is the AD5320BRM suitable for portable battery-operated equipment?
Yes, due to its low power consumption, it is ideal for portable, battery-operated equipment.
