Overview
The AD5320BRMZ from Analog Devices Inc. is a single, 12-bit buffered voltage output digital-to-analog converter (DAC) designed for low power consumption and high precision. It operates from a single supply voltage ranging from 2.7 V to 5.5 V and consumes only 115 µA at 3 V, making it ideal for portable, battery-operated equipment. The device features an on-chip precision output amplifier that allows for rail-to-rail output swing, ensuring a wide dynamic output range. The AD5320BRMZ is part of a family of pin-compatible DACs, including the 8-bit AD5300 and the 10-bit AD5310, and is available in 8-lead MSOP and 6-lead SOT-23 packages.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Resolution | Number of bits | 12 bits |
| Supply Voltage | Operating voltage range | 2.7 V to 5.5 V |
| Current Consumption | At 3 V supply | 115 µA |
| Power-Down Current | At 5 V supply | 200 nA |
| Output Range | Voltage output range | 0 V to VDD |
| Serial Interface | Compatibility and clock rate | SPI, QSPI, MICROWIRE, DSP; up to 30 MHz |
| Temperature Range | Operating temperature range | −40°C to +105°C |
| Package | Available packages | 8-lead MSOP, 6-lead SOT-23 |
Key Features
- Rail-to-Rail Output: The on-chip precision output amplifier allows for rail-to-rail output swing, ensuring the widest dynamic output range.
- Low Power Consumption: Consumes only 115 µA at 3 V and reduces to 1 µW in power-down mode.
- Power-On Reset: Ensures the DAC output powers up to zero volts and remains there until a valid write takes place.
- Power-Down Mode: Reduces current consumption to 200 nA at 5 V and provides software selectable output loads.
- Versatile Serial Interface: Compatible with SPI, QSPI, MICROWIRE, and DSP interface standards, operating at clock rates up to 30 MHz.
- High Precision: Guaranteed monotonic by design over all codes, with a high degree of linearity and accuracy.
Applications
- Portable Battery-Powered Instruments: Ideal for devices requiring low power consumption and high precision.
- Digital Gain and Offset Adjustment: Used in applications where precise gain and offset adjustments are necessary.
- Programmable Voltage and Current Sources: Suitable for applications requiring programmable voltage or current outputs.
- Programmable Attenuators: Can be used in signal processing and attenuation applications.
Q & A
- What is the resolution of the AD5320BRMZ DAC?
The AD5320BRMZ has a 12-bit resolution.
- What is the operating voltage range of the AD5320BRMZ?
The operating voltage range is from 2.7 V to 5.5 V.
- How much current does the AD5320BRMZ consume at 3 V supply?
The current consumption at 3 V supply is 115 µA.
- What is the power-down current consumption of the AD5320BRMZ at 5 V supply?
The power-down current consumption at 5 V supply is 200 nA.
- What type of serial interface does the AD5320BRMZ support?
The AD5320BRMZ supports SPI, QSPI, MICROWIRE, and DSP interface standards.
- What is the temperature range of the AD5320BRMZ?
The operating temperature range is −40°C to +105°C.
- What packages are available for the AD5320BRMZ?
The AD5320BRMZ is available in 8-lead MSOP and 6-lead SOT-23 packages.
- Does the AD5320BRMZ have a power-on reset feature?
Yes, the AD5320BRMZ has a power-on reset feature that ensures the DAC output powers up to zero volts.
- Can the AD5320BRMZ be used in portable battery-powered instruments?
Yes, it is ideal for portable battery-powered instruments due to its low power consumption.
- Is the AD5320BRMZ guaranteed to be monotonic over all codes?
Yes, the AD5320BRMZ is guaranteed to be monotonic by design over all codes.
