Overview
The AD5685RBRUZ-RL7, part of the nanoDAC+® family from Analog Devices Inc., is a quad, 14-bit digital-to-analog converter (DAC) with voltage output. This device is designed for low power consumption and high precision, making it suitable for a variety of applications requiring accurate analog voltage generation. The AD5685R features a 2.5 V, 2 ppm/°C internal reference and a gain select pin, allowing for full-scale output of either 2.5 V or 5 V. It operates from a single 2.7 V to 5.5 V supply and is available in both 3 mm × 3 mm LFCSP and TSSOP packages.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Comments |
|---|---|---|---|---|---|
| Resolution | 14 | 14 | 14 | Bits | |
| Relative Accuracy | ±0.5 | ±4 | LSB | ||
| Differential Nonlinearity | ±1 | ±1 | LSB | Guaranteed monotonic by design | |
| Zero-Code Error | 0.4 | 1.5 | mV | ||
| Output Voltage Range | 0 | 2 × VREF | V | Gain = 2 | |
| Supply Voltage | 2.7 | 5.5 | V | ||
| Operating Temperature | -40 | 105 | °C | ||
| Package Type | 16-TSSOP | ||||
| Power-Up Time | 2.5 | µs | Coming out of power-down mode; VDD = 5 V | ||
| Short-Circuit Current | 40 | mA | VDD = 5 V |
Key Features
- Low Power Consumption: Operates from a single 2.7 V to 5.5 V supply with low current consumption, especially in power-down mode where it reduces to 4 µA at 3 V.
- High Precision: Features a 2.5 V, 2 ppm/°C internal reference and exhibits less than 0.1% FSR gain error and 1.5 mV offset error performance.
- Gain Selectability: Includes a gain select pin allowing for full-scale output of either 2.5 V or 5 V.
- Monotonicity: Guaranteed monotonic by design, ensuring accurate and reliable output.
- Versatile Interface: Employs a versatile SPI interface that operates at clock rates up to 50 MHz and includes a VLOGIC pin for 1.8V/3V/5V logic compatibility.
- Power-On Reset and Power-Down: Features a power-on-reset circuit and per-channel power-down capability to manage power efficiently.
Applications
The AD5685RBRUZ-RL7 is suitable for various applications requiring precise analog voltage generation, such as:
- Industrial Automation: For controlling and monitoring industrial processes.
- Medical Devices: In medical equipment where precise voltage control is critical.
- Aerospace and Defense: For applications requiring high reliability and precision.
- Automotive Systems: In automotive control systems and sensors.
- Test and Measurement Equipment: For generating precise analog signals in test and measurement instruments.
Q & A
- What is the resolution of the AD5685RBRUZ-RL7?
The AD5685RBRUZ-RL7 has a resolution of 14 bits.
- What is the operating voltage range of the AD5685RBRUZ-RL7?
The device operates from a single 2.7 V to 5.5 V supply.
- What is the internal reference voltage and its temperature coefficient?
The internal reference voltage is 2.5 V with a temperature coefficient of 2 ppm/°C.
- What are the package options for the AD5685RBRUZ-RL7?
The device is available in both 3 mm × 3 mm LFCSP and TSSOP packages.
- How does the gain select pin function?
The gain select pin allows for full-scale output of either 2.5 V or 5 V.
- What is the power consumption in power-down mode?
In power-down mode, the current consumption reduces to 4 µA at 3 V.
- What is the maximum short-circuit current?
The maximum short-circuit current is 40 mA at VDD = 5 V.
- What is the power-up time from power-down mode?
The power-up time from power-down mode is 2.5 µs at VDD = 5 V.
- What type of interface does the AD5685RBRUZ-RL7 use?
The device employs a versatile SPI interface that operates at clock rates up to 50 MHz.
- Is the AD5685RBRUZ-RL7 RoHS compliant?
Yes, the AD5685RBRUZ-RL7 is RoHS compliant.
