Overview
The AD5689RBCPZ-RL7 is a member of the nanoDAC+™ family from Analog Devices Inc. This device is a low-power, dual, 16-bit buffered voltage output digital-to-analog converter (DAC). It features a 2.5 V internal reference with a drift of 2 ppm/°C and offers user-selectable gain of 1 or 2. The DAC operates from a single 2.7 V to 5.5 V supply and is guaranteed monotonic by design, ensuring high accuracy and reliability. The device is available in a compact 3 mm × 3 mm LFCSP package, making it suitable for a variety of applications requiring precise analog output.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Resolution | 16 | 16 | 16 | Bits | |
| Relative Accuracy | ±1 | ±2 | ±3 | LSB | Gain = 1, Gain = 2 |
| Differential Nonlinearity | ±1 | ±1 | ±1 | LSB | Guaranteed monotonic by design |
| Output Voltage Range | 0 | 2 × VREF | V | Gain = 1, Gain = 2 | |
| Supply Voltage (VDD) | 2.7 | 5.5 | V | ||
| Logic Supply Voltage (VLOGIC) | 1.62 | 5.5 | V | ||
| Power Consumption (Normal Mode) | 0.59 | 0.7 | mA | VDD = 2.7 V to 5.5 V, DAC outputs unloaded | |
| Output Voltage Settling Time | 5 | 8 | µs | ¼ to ¾ scale settling to ±2 LSB | |
| Slew Rate | 0.8 | V/µs | |||
| Digital-to-Analog Glitch Impulse | 0.5 | nV-sec | 1 LSB change around major carry |
Key Features
- High Relative Accuracy: ±2 LSB maximum at 16 bits, ensuring precise analog output.
- Compact Package: Available in a 3 mm × 3 mm LFCSP package, ideal for space-constrained applications.
- User-Selectable Gain: Gain of 1 or 2 selectable via the GAIN pin, allowing for flexible output voltage ranges.
- Internal Reference: 2.5 V internal reference with a drift of 2 ppm/°C, enabled by default.
- Low Power Consumption: Operates with low power consumption, typically 0.59 mA to 0.7 mA in normal mode.
- High Drive Capability: Capable of driving loads up to 20 mA, 0.5 V from supply rails.
- Reset to Zero Scale or Midscale: Power-on reset circuit and RSTSEL pin ensure DAC outputs power up to zero scale or midscale.
- 50 MHz SPI Interface: Supports readback or daisy chain operations with 1.8 V logic compatibility).
Applications
- Optical Transceivers: Suitable for applications requiring precise analog output in optical communication systems).
- Base Station Power Amplifiers: Used in base station power amplifiers for accurate voltage control).
- Process Control (PLC I/O Cards): Ideal for process control systems where precise analog outputs are necessary).
- Industrial Automation: Applied in various industrial automation scenarios requiring reliable and accurate analog signals).
- Data Acquisition Systems: Used in data acquisition systems to convert digital signals into precise analog outputs).
Q & A
- What is the resolution of the AD5689RBCPZ-RL7 DAC?
The AD5689RBCPZ-RL7 has a resolution of 16 bits.
- What is the operating voltage range of the AD5689RBCPZ-RL7?
The device operates from a single 2.7 V to 5.5 V supply.
- What is the typical power consumption of the AD5689RBCPZ-RL7 in normal mode?
The typical power consumption is 0.59 mA to 0.7 mA in normal mode.
- Does the AD5689RBCPZ-RL7 have an internal reference voltage?
Yes, it includes a 2.5 V internal reference with a drift of 2 ppm/°C, enabled by default.
- What are the available gain settings for the AD5689RBCPZ-RL7?
The device allows for user-selectable gain of 1 or 2 via the GAIN pin.
- What is the settling time for the AD5689RBCPZ-RL7 DAC?
The output voltage settling time is typically 5 µs to 8 µs for ¼ to ¾ scale settling to ±2 LSB.
- Is the AD5689RBCPZ-RL7 guaranteed monotonic by design?
Yes, the device is guaranteed monotonic by design, ensuring that the DAC outputs are always monotonic.
- What is the slew rate of the AD5689RBCPZ-RL7?
The slew rate is 0.8 V/µs.
- What are some common applications of the AD5689RBCPZ-RL7?
Common applications include optical transceivers, base station power amplifiers, process control, industrial automation, and data acquisition systems.
- What package type is the AD5689RBCPZ-RL7 available in?
The device is available in a 3 mm × 3 mm LFCSP package.
