Overview
The AD5302ARMZ from Analog Devices Inc. is a dual 8-bit buffered voltage output Digital-to-Analog Converter (DAC) housed in a 10-lead MSOP package. This device operates from a single power supply ranging from 2.5 V to 5.5 V and consumes a low current of 230 μA at 3 V. It features on-chip rail-to-rail output buffer amplifiers, ensuring that the outputs can swing from the supply rails. The AD5302 is designed for low power consumption and high precision, making it suitable for a variety of applications, including portable battery-powered instruments and digital gain and offset adjustments.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Number of Bits | 8 | - | Dual 8-bit DACs |
| Package | MSOP-10 | - | 10-lead MicroSOIC |
| Power Supply | 2.5 V to 5.5 V | V | Single supply operation |
| Current Consumption | 230 μA @ 3 V | μA | Micropower operation |
| Power-Down Current | 200 nA @ 5 V, 50 nA @ 3 V | nA | Low power-down current |
| Output Type | Voltage - Buffered | - | Rail-to-rail output |
| Settling Time | 8 μs | μs | ¼ Scale to ¾ Scale Change |
| Slew Rate | 0.7 V/μs | V/μs | Major-code transition |
| Data Interface | SPI, QSPI, MICROWIRE, DSP | - | Up to 30 MHz clock rate |
| INL/DNL | ±0.15 LSB / ±0.02 LSB | LSB | Integral and differential nonlinearity |
| Operating Temperature | -40°C to 105°C | °C | Wide operating temperature range |
Key Features
- Dual 8-bit buffered voltage output DACs in a single package.
- Low power consumption: 230 μA at 3 V and 200 nA in power-down mode at 5 V.
- Rail-to-rail output amplifiers with a slew rate of 0.7 V/μs.
- Guaranteed monotonic by design over all codes.
- Power-on-reset to 0 V.
- Simultaneous update of DAC outputs via LDAC pin.
- 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards, operating up to 30 MHz.
- External reference input options.
- Qualified for automotive applications.
Applications
- Portable battery-powered instruments.
- Digital gain and offset adjustment.
- Programmable voltage and current sources.
- Programmable attenuators.
- Automotive applications.
Q & A
- What is the resolution of the AD5302ARMZ DAC?
The AD5302ARMZ is a dual 8-bit DAC.
- What is the power supply range for the AD5302ARMZ?
The AD5302ARMZ operates from a single power supply ranging from 2.5 V to 5.5 V.
- What is the current consumption of the AD5302ARMZ at 3 V?
The current consumption is 230 μA at 3 V.
- What is the settling time of the AD5302ARMZ?
The settling time is 8 μs for a ¼ scale to ¾ scale change.
- What type of data interface does the AD5302ARMZ support?
The AD5302ARMZ supports SPI, QSPI, MICROWIRE, and DSP interfaces up to 30 MHz.
- What is the slew rate of the output amplifiers in the AD5302ARMZ?
The slew rate is 0.7 V/μs.
- Is the AD5302ARMZ guaranteed to be monotonic?
Yes, the AD5302ARMZ is guaranteed monotonic by design over all codes.
- What happens to the DAC outputs during power-on?
The DAC outputs power-up to 0 V and remain there until a valid write takes place.
- Can the AD5302ARMZ be used in automotive applications?
Yes, the AD5302ARMZ is qualified for automotive applications.
- What is the operating temperature range of the AD5302ARMZ?
The operating temperature range is -40°C to 105°C.
