Overview
The AD5668BRUZ-1REEL7 is a low-power, octal, 16-bit, buffered voltage-output digital-to-analog converter (DAC) produced by Analog Devices Inc. This device operates from a single 2.7 V to 5.5 V supply, making it versatile for various applications. It features an on-chip precision output amplifier that enables rail-to-rail output swing, enhancing its usability in a wide range of systems.
The AD5668BRUZ-1REEL7 includes an on-chip reference with an internal gain of 2, offering different full-scale output ranges depending on the reference voltage selected. The device also incorporates a power-on reset circuit and a power-down feature to minimize current consumption.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Resolution | 16 bits | ||||
| Supply Voltage | 2.7 | 5.5 | V | ||
| Reference Voltage | 1.25 / 2.5 | V | Internal reference with 5 ppm/°C drift | ||
| Full-Scale Output Range | 2.5 / 5 | V | Dependent on reference voltage | ||
| Output Voltage Settling Time | 2.5 | 7 | µs | ¼ to ¾ scale settling to ±2 LSB | |
| Slew Rate | 1.2 | V/µs | |||
| Digital-to-Analog Glitch Impulse | 4 | 19 | nV-s | 1 LSB change around major carry | |
| Power Consumption (Power-Down) | 400 | nA | At 5 V | ||
| Package | 16-TSSOP (0.173, 4.40mm Width) | ||||
Key Features
- On-Chip Reference: Internal reference with 5 ppm/°C drift, allowing for precise output voltages.
- Power-On Reset and Power-Down: Ensures DAC output powers up to 0 V or midscale and reduces current consumption to 400 nA in power-down mode.
- Serial Interface: Versatile 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP interface standards, operating at clock rates up to 50 MHz.
- Output Amplifier: On-chip precision output amplifier enabling rail-to-rail output swing.
- Simultaneous Update: Outputs of all DACs can be updated simultaneously using the LDAC function.
- Asynchronous CLR: Updates all DACs to a user-programmable code—zero scale, midscale, or full scale.
Applications
- Industrial Control Systems: Suitable for precise voltage output in control systems.
- Medical Devices: Used in medical equipment requiring accurate and stable voltage outputs.
- Aerospace and Defense: Applicable in systems requiring high precision and reliability.
- Automotive Systems: Can be used in automotive control systems for precise voltage control.
- Test and Measurement Equipment: Ideal for equipment needing stable and accurate voltage outputs.
Q & A
- What is the resolution of the AD5668BRUZ-1REEL7 DAC?
The AD5668BRUZ-1REEL7 has a resolution of 16 bits.
- What is the supply voltage range for the AD5668BRUZ-1REEL7?
The device operates from a single 2.7 V to 5.5 V supply.
- What are the available internal reference voltages for the AD5668BRUZ-1REEL7?
The device offers internal reference voltages of 1.25 V and 2.5 V, each with a 5 ppm/°C drift.
- How does the power-on reset circuit function in the AD5668BRUZ-1REEL7?
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 current consumption in power-down mode for the AD5668BRUZ-1REEL7?
The device reduces current consumption to 400 nA at 5 V in power-down mode.
- What types of serial interfaces are supported by the AD5668BRUZ-1REEL7?
The device supports SPI, QSPI, MICROWIRE, and DSP interface standards.
- Can the outputs of all DACs be updated simultaneously in the AD5668BRUZ-1REEL7?
Yes, the outputs of all DACs can be updated simultaneously using the LDAC function.
- What is the package type for the AD5668BRUZ-1REEL7?
The device is packaged in a 16-TSSOP (0.173, 4.40mm Width).
- How does the asynchronous CLR function work in the AD5668BRUZ-1REEL7?
The asynchronous CLR updates all DACs to a user-programmable code—zero scale, midscale, or full scale.
- What is the slew rate of the AD5668BRUZ-1REEL7?
The slew rate is 1.2 V/µs.
