Overview
The AD5666ARUZ-2REEL7, produced by Analog Devices Inc., is a low power, quad, 16-bit, buffered voltage-output Digital-to-Analog Converter (DAC). This component operates from a single 2.7 V to 5.5 V supply and is guaranteed monotonic by design. It features an on-chip reference with an internal gain of 2, making it versatile for various applications. The AD5666-2 variant, specifically, has a 2.5 V 5 ppm/°C reference, resulting in a full-scale output of 5 V. The device is packaged in a 14-lead TSSOP and includes a power-on reset circuit and power-down feature to minimize current consumption.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Conditions/Comments |
|---|---|---|---|---|---|
| VDD | 2.7 | 5.5 | V | All digital inputs at 0 or VDD, DAC active, excludes load current | |
| Resolution | 16-bit | ||||
| Reference Voltage (AD5666-2) | 2.5 | V | 5 ppm/°C | ||
| Full-Scale Output (AD5666-2) | 5 | V | |||
| Power Consumption (Normal Mode) | 1.3 | 1.5 | mA | VDD = 2.7 V to 3.6 V, interface inactive, all DACs active, DAC outputs unloaded | |
| Power Consumption (All Power-Down Modes) | 0.2 | 1 | μA | VDD = 2.7 V to 3.6 V, all four DACs powered down | |
| Output Voltage Settling Time | 6 | 10 | μs | ¼ to ¾ scale settling to ±2 LSB | |
| Slew Rate | 1.5 | V/μs | |||
| Interface Clock Rate | 50 | MHz | Compatible with SPI, QSPI, MICROWIRE, and DSP interface standards |
Key Features
- Quad, 16-bit DAC with on-chip 2.5 V 5 ppm/°C reference for the AD5666-2 variant.
- Operates from a single 2.7 V to 5.5 V supply.
- Guaranteed monotonic by design.
- Power-on reset circuit to ensure DAC output powers up to 0 V or midscale.
- Power-down feature reducing current consumption to 400 nA at 5 V.
- Software-selectable output loads while in power-down mode.
- Simultaneous update of all DAC outputs using the LDAC function.
- Asynchronous CLR to clear all DACs to a software-selectable code (0 V, midscale, or full scale).
- Versatile 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP interface standards.
- On-chip precision output amplifier enabling rail-to-rail output swing.
Applications
The AD5666ARUZ-2REEL7 is suitable for a variety of applications requiring precise and low-power digital-to-analog conversion. These include:
- Industrial control systems.
- Medical devices.
- Aerospace and defense systems.
- Automotive systems.
- Test and measurement equipment.
- Audio and video equipment.
Q & A
- What is the resolution of the AD5666ARUZ-2REEL7?
The AD5666ARUZ-2REEL7 has a resolution of 16 bits. - What is the operating voltage range of the AD5666ARUZ-2REEL7?
The operating voltage range is from 2.7 V to 5.5 V. - What is the reference voltage for the AD5666-2 variant?
The reference voltage for the AD5666-2 variant is 2.5 V with a 5 ppm/°C temperature coefficient. - What is the full-scale output voltage for the AD5666-2 variant?
The full-scale output voltage for the AD5666-2 variant is 5 V. - How does the power-on reset circuit function?
The power-on reset circuit ensures that the DAC output powers up to 0 V (POR pin low) or to midscale (POR pin high) and remains at this level until a valid write takes place. - What is the current consumption in power-down mode?
The current consumption in power-down mode is typically 400 nA at 5 V. - Can the outputs of all DACs be updated simultaneously?
Yes, the outputs of all DACs can be updated simultaneously using the LDAC function. - What interface standards is the AD5666ARUZ-2REEL7 compatible with?
The AD5666ARUZ-2REEL7 is compatible with SPI, QSPI, MICROWIRE, and DSP interface standards. - What is the maximum clock rate for the serial interface?
The maximum clock rate for the serial interface is 50 MHz. - Does the AD5666ARUZ-2REEL7 have an on-chip precision output amplifier?
Yes, the AD5666ARUZ-2REEL7 has an on-chip precision output amplifier that enables rail-to-rail output swing.
