Overview
The AD5668BRUZ-3REEL7 is a high-performance, octal, 16-bit digital-to-analog converter (DAC) produced by Analog Devices Inc. This device is part of the AD5628/AD5648/AD5668 family and is known for its low power consumption and versatile features. It operates from a single supply voltage ranging from 2.7 V to 5.5 V and is available in a 16-lead TSSOP package.
The AD5668BRUZ-3REEL7 features an on-chip precision output amplifier that enables rail-to-rail output swing and includes an internal reference with a temperature coefficient of 5 ppm/°C. The device also includes a power-on reset circuit and multiple power-down modes, making it suitable for a wide range of applications requiring precision and low power consumption.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/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 | ||
| Power Supply Voltage (VDD) | 2.7 | 5.5 | V | ||
| Current Consumption (Normal Mode) | 1.0 | 1.5 | 1.8 | mA | Internal reference off/on, VDD = 2.7 V to 3.6 V |
| Current Consumption (Power-Down Mode) | 0.2 | 1 | µA | VDD = 2.7 V to 3.6 V | |
| Operating Temperature Range | -40 | 105 | °C | ||
Key Features
- Octal, 16-bit DAC: Provides eight independent DAC channels with 16-bit resolution.
- On-Chip Reference: Includes a 1.25 V or 2.5 V internal reference with a temperature coefficient of 5 ppm/°C.
- Power-On Reset: Ensures DAC output powers up to 0 V or midscale and remains at this level until a valid write sequence is made.
- Power-Down Capability: Reduces current consumption to 400 nA at 5 V and provides software-selectable output loads while in power-down mode.
- Versatile Serial Interface: Supports SPI, QSPI, MICROWIRE, and DSP interface standards with clock rates up to 50 MHz.
- Rail-to-Rail Output Swing: Enabled by the on-chip precision output amplifier.
- Simultaneous Update of DAC Channels: Allows updating all DAC channels simultaneously using the LDAC function.
- Asynchronous CLR Function: Updates all DACs to a user-programmable code-zero scale, midscale, or full scale.
Applications
- Industrial Automation: Suitable for control systems and instrumentation where precision and reliability are crucial.
- Medical Devices: Used in medical equipment that requires accurate and stable voltage outputs.
- Aerospace and Defense: Ideal for applications requiring low power consumption and high precision in harsh environments.
- Test and Measurement Equipment: Utilized in various test and measurement instruments for generating precise analog signals.
- Automotive Systems: Applied in automotive control systems that demand high accuracy and reliability.
Q & A
- What is the resolution of the AD5668BRUZ-3REEL7 DAC?
The AD5668BRUZ-3REEL7 has a resolution of 16 bits.
- What is the operating voltage range of the AD5668BRUZ-3REEL7?
The device operates from a single supply voltage ranging from 2.7 V to 5.5 V.
- What is the temperature coefficient of the internal reference?
The internal reference has a temperature coefficient of 5 ppm/°C.
- How does the power-on reset function work?
The DAC output powers up to 0 V or midscale and remains at this level until a valid write sequence is made.
- What is the current consumption in power-down mode?
The current consumption in power-down mode is typically 400 nA at 5 V.
- What types of serial interfaces does the AD5668BRUZ-3REEL7 support?
The device supports SPI, QSPI, MICROWIRE, and DSP interface standards.
- Can the DAC channels be updated simultaneously?
Yes, all DAC channels can be updated simultaneously using the LDAC function.
- 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 is the operating temperature range of the AD5668BRUZ-3REEL7?
The operating temperature range is from -40°C to +105°C.
- What package type is the AD5668BRUZ-3REEL7 available in?
The device is available in a 16-lead TSSOP package.
