Overview
The AD5648ARUZ-2 is a low-power, octal, 14-bit, buffered voltage-output Digital-to-Analog Converter (DAC) manufactured by Analog Devices Inc. This device operates from a single 2.7 V to 5.5 V supply and is guaranteed monotonic by design. It is part of the nanoDAC series and is available in a 16-lead TSSOP package. The AD5648 is designed for applications requiring multiple DAC channels with high precision and low power consumption.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 14 bits |
| Supply Voltage | 2.7 V to 5.5 V |
| Reference Voltage | 1.25 V or 2.5 V (5 ppm/°C) |
| Full-Scale Output Range | 2.5 V or 5 V |
| Relative Accuracy | ±2 to ±4 LSB |
| Differential Nonlinearity | ±0.5 LSB |
| Zero-Code Error | 6 to 19 mV |
| Zero-Code Error Drift | ±2 µV/°C |
| Full-Scale Error | −0.2 to −1 % FSR |
| Power Consumption (Normal Mode) | 1.0 to 2.25 mA |
| Power Consumption (Power-Down Mode) | 0.2 to 1 µA |
| Operating Temperature Range | −40°C to +105°C |
| Package Type | 16-lead TSSOP |
Key Features
- Octal, 14-bit DAC with on-chip reference and internal gain of 2.
- Rail-to-rail output swing enabled by the on-chip precision output amplifier.
- Software-selectable output loads in power-down mode.
- Power-on reset circuit ensuring DAC output powers up to 0 V or midscale.
- Asynchronous CLR function to update all DACs to zero scale, midscale, or full scale.
- LDAC function for simultaneous update of all DAC channels.
- Versatile 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards, operating at clock rates up to 50 MHz.
Applications
The AD5648ARUZ-2 is suitable for a variety of applications requiring multiple precision DAC channels, such as industrial control systems, medical devices, and data acquisition systems. It is particularly useful in scenarios where low power consumption and high accuracy are critical.
Q & A
- What is the resolution of the AD5648ARUZ-2 DAC?
The AD5648ARUZ-2 has a resolution of 14 bits. - What is the supply voltage range for the AD5648ARUZ-2?
The device operates from a single 2.7 V to 5.5 V supply. - What are the available reference voltages for the AD5648ARUZ-2?
The available reference voltages are 1.25 V and 2.5 V, both with a 5 ppm/°C temperature coefficient. - How does the power-on reset circuit function?
The power-on reset circuit ensures that the DAC output powers up to 0 V or midscale and remains at this level until a valid write takes place. - What is the power consumption in normal and power-down modes?
In normal mode, the power consumption is 1.0 to 2.25 mA, and in power-down mode, it is 0.2 to 1 µA. - What is the operating temperature range of the AD5648ARUZ-2?
The operating temperature range is −40°C to +105°C. - What package type is the AD5648ARUZ-2 available in?
The device is available in a 16-lead TSSOP package. - How does the LDAC function work?
The LDAC function allows the simultaneous update of all DAC channels. - What is the purpose of the asynchronous CLR function?
The asynchronous CLR function updates all DACs to a user-programmable code—zero scale, midscale, or full scale. - What serial interface standards is the AD5648ARUZ-2 compatible with?
The device is compatible with SPI, QSPI, MICROWIRE, and DSP interface standards.
