Overview
The AD5668BCBZ-3-RL7 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 and is known for its high precision and reliability. The AD5668 series is designed to meet the stringent requirements of various industrial and aerospace applications, including those that require high accuracy and low power consumption.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Comments |
|---|---|---|---|---|---|
| Resolution | 16 bits | ||||
| Relative Accuracy | ±8 | ±16 | LSB | See Figure 7 | |
| Differential Nonlinearity | ±1 | ±1 | LSB | Guaranteed monotonic by design | |
| Zero-Code Error | 6 | 19 | mV | All 0s loaded to DAC register | |
| Full-Scale Error | -0.2 | -1 | % FSR | All 1s loaded to DAC register | |
| Gain Error | ±1 | ±1 | % FSR | ||
| Offset Error | ±6 | ±19 | mV | ||
| VDD | 2.7 | 5.5 | V | ||
| IDDD (Normal Mode) | 1.0 | 1.5 | 1.5 | mA | Internal reference off, VDD = 2.7 V to 3.6 V |
| IDDD (All Power-Down Modes) | 0.2 | 1 | µA | VDD = 2.7 V to 3.6 V | |
| Output Voltage Settling Time | 2.5 | 7 | µs | ¼ to ¾ scale settling to ±2 LSB | |
| Slew Rate | 1.2 | V/µs | |||
Key Features
- Octal, 16-bit DAC: Provides eight independent DAC channels with 16-bit resolution, ensuring high precision in output voltage.
- On-Chip Reference: Features an on-chip reference with an internal gain of 2, available in 1.25 V and 2.5 V options with 5 ppm/°C temperature coefficient.
- Power-On Reset and Power-Down: Includes a power-on reset circuit and a power-down feature that reduces current consumption to 400 nA at 5 V.
- Serial Interface: Utilizes a versatile 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP interface standards, operating at clock rates up to 50 MHz.
- Rail-to-Rail Output Swing: The on-chip precision output amplifier enables rail-to-rail output swing, enhancing the device's versatility.
- Software-Selectable Output Loads: Allows for software-selectable output loads while in power-down mode for any or all DAC channels.
Applications
- Industrial Automation: Suitable for applications requiring high precision and reliability in industrial automation systems.
- Aerospace and Defense: The AD5668-EP model supports defense and aerospace applications, adhering to AQEC standards.
- Medical Devices: Used in medical devices where precise voltage output is critical.
- Test and Measurement Equipment: Ideal for test and measurement equipment due to its high accuracy and stability.
Q & A
- What is the resolution of the AD5668BCBZ-3-RL7 DAC?
The AD5668BCBZ-3-RL7 has a resolution of 16 bits.
- What is the operating voltage range of the AD5668BCBZ-3-RL7?
The device operates from a single 2.7 V to 5.5 V supply.
- What types of references are available on the AD5668BCBZ-3-RL7?
The device features on-chip references with internal gains of 2, available in 1.25 V and 2.5 V options with 5 ppm/°C temperature coefficient.
- How does the power-on reset circuit function in the AD5668BCBZ-3-RL7?
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 AD5668BCBZ-3-RL7?
The current consumption is reduced to 400 nA at 5 V in power-down mode.
- What serial interface standards is the AD5668BCBZ-3-RL7 compatible with?
The device is compatible with SPI, QSPI, MICROWIRE, and DSP interface standards, operating at clock rates up to 50 MHz.
- What is the output voltage settling time for the AD5668BCBZ-3-RL7?
The output voltage settling time is 2.5 µs to 7 µs for ¼ to ¾ scale settling to ±2 LSB.
- Is the AD5668BCBZ-3-RL7 guaranteed to be monotonic?
Yes, the device is guaranteed monotonic by design.
- What is the slew rate of the AD5668BCBZ-3-RL7?
The slew rate is 1.2 V/µs.
- Can the output loads be software-selectable in power-down mode?
Yes, the output loads can be software-selectable for any or all DAC channels while in power-down mode.
