Overview
The AD5302BRMZ is a dual 8-bit buffered voltage output Digital-to-Analog Converter (DAC) produced by Analog Devices Inc. This device is part of the AD5302/AD5312/AD5322 family, which offers high precision and versatility in various applications. The AD5302BRMZ operates from a single 2.5 V to 5.5 V power supply, making it suitable for a wide range of power conditions. It features a compact 10-lead MSOP package and is designed for low power consumption, with a typical current draw of 230 μA at 3 V and a power-down current of 200 nA at 5 V.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Resolution | 8 | Bits | Dual 8-bit DACs |
| Power Supply | 2.5 V to 5.5 V | V | Analog and Digital Supply |
| Operating Temperature | -40°C to +105°C | °C | |
| Package | 10-lead MSOP | ||
| Current Consumption | 230 μA @ 3 V | μA | Typical at 3 V |
| Power-Down Current | 200 nA @ 5 V, 50 nA @ 3 V | nA | |
| Settling Time | 8 μs | μs | ¼ Scale to ¾ Scale Change |
| Slew Rate | 0.7 V/μs | V/μs | |
| Relative Accuracy | ±0.15 LSB | LSB | Typical at VDD = 2.5 V to 5.5 V, VREF = 2 V |
| Differential Nonlinearity | ±0.02 LSB | LSB | Typical at VDD = 2.5 V to 5.5 V, VREF = 2 V |
Key Features
- Low Power Consumption: Micropower operation with a typical current draw of 230 μA at 3 V and a power-down current of 200 nA at 5 V.
- High Precision: Guaranteed monotonic by design over all codes, with relative accuracy of ±0.15 LSB and differential nonlinearity of ±0.02 LSB.
- Versatile Interface: Utilizes a 3-wire serial interface compatible with standard SPI, QSPI, MICROWIRE, and DSP interface standards, operating at clock rates up to 30 MHz.
- Simultaneous Update: Allows simultaneous update of DAC outputs via the asynchronous active-low LDAC input.
- Buffered/Unbuffered Reference Input Options: The reference inputs can be configured as buffered or unbuffered inputs.
- Power-on Reset: Ensures that the DAC outputs power-up to 0 V and remain there until a valid write takes place to the device.
- Rail-to-Rail Output: On-chip rail-to-rail output buffer amplifiers allow the outputs to swing rail-to-rail.
Applications
- Portable Battery-Powered Instruments: Ideal for devices that require low power consumption and high precision.
- Digital Gain and Offset Adjustment: Used in applications requiring precise voltage adjustments.
- Programmable Voltage and Current Sources: Suitable for generating precise voltage and current levels.
- Programmable Attenuators: Used in signal processing and conditioning applications.
- Automotive Applications: Qualified for use in automotive environments due to its wide operating temperature range.
Q & A
- What is the resolution of the AD5302BRMZ DAC?
The AD5302BRMZ is a dual 8-bit DAC.
- What is the operating voltage range of the AD5302BRMZ?
The device operates from a single 2.5 V to 5.5 V power supply.
- What is the typical current consumption of the AD5302BRMZ at 3 V?
The typical current consumption is 230 μA at 3 V.
- How does the AD5302BRMZ handle power-on reset?
The device ensures that the DAC outputs power-up to 0 V and remain there until a valid write takes place.
- What interface standards is the AD5302BRMZ compatible with?
The device is compatible with standard SPI, QSPI, MICROWIRE, and DSP interface standards.
- What is the slew rate of the AD5302BRMZ?
The slew rate is 0.7 V/μs.
- Can the AD5302BRMZ update its DAC outputs simultaneously?
Yes, the device allows simultaneous update of DAC outputs via the asynchronous active-low LDAC input.
- What is the operating temperature range of the AD5302BRMZ?
The operating temperature range is -40°C to +105°C.
- Is the AD5302BRMZ suitable for automotive applications?
Yes, it is qualified for automotive applications due to its wide operating temperature range and other specifications.
- What is the typical settling time of the AD5302BRMZ?
The typical settling time is 8 μs for a ¼ scale to ¾ scale change.
