Overview
The AD5687RBRUZ-RL7, produced by Analog Devices Inc., is a member of the nanoDAC+™ family. It is a low-power, dual, 12-bit buffered voltage output digital-to-analog converter (DAC). This device features a 2.5 V, 2 ppm/°C internal reference and a gain select pin, allowing for full-scale output of either 2.5 V or 5 V. The AD5687R 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 3 mm × 3 mm LFCSP and a TSSOP package, making it suitable for a variety of applications where space is limited.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Resolution | 12 | 12 | 12 | Bits | |
| Relative Accuracy | ±0.12 | ±2 | ±0.12 | LSB | |
| Differential Nonlinearity | ±1 | ±1 | ±1 | LSB | Guaranteed monotonic by design |
| Input High Voltage (VINH) | 0.7 × VLOGIC | 0.7 × VLOGIC | 0.7 × VLOGIC | V | |
| Output Low Voltage (VOL) | 0.4 | 0.4 | 0.4 | V | ISINK = 200 μA |
| Output High Voltage (VOH) | VLOGIC - 0.4 | VLOGIC - 0.4 | VLOGIC - 0.4 | V | ISOURCE = 200 μA |
| VDD | 2.7 | 5.5 | V | ||
| IDD (Normal Mode) | 0.59 | 0.7 | 0.7 | mA | VIH = VDD, VIL = GND, VDD = 2.7 V to 5.5 V |
| IDD (All Power-Down Modes) | 1 | 4 | μA | −40°C to +85°C | |
| Output Voltage Settling Time | 5 | 7 | μs | ¼ to ¾ scale settling to ±2 LSB | |
| Slew Rate | 0.8 | V/μs |
Key Features
- Low power consumption: 0.59 mA to 0.7 mA in normal mode and 1 μA to 4 μA in power-down mode.
- High relative accuracy: ±2 LSB maximum at 12 bits, and ±0.1% FSR gain error and ±1.5 mV offset error.
- User-selectable gain of 1 or 2 via the GAIN pin, allowing full-scale output of 2.5 V or 5 V.
- Power-on reset circuit and RSTSEL pin to ensure DAC outputs power up to zero scale or midscale.
- 1.8 V logic compatibility and a versatile SPI interface operating up to 50 MHz.
- Low glitch and crosstalk performance: 0.5 nV-sec digital-to-analog glitch impulse, and low digital feedthrough and crosstalk).
- Compact packaging: available in 3 mm × 3 mm LFCSP and TSSOP packages).
Applications
- Optical transceivers
- Base station power amplifiers
- Process control (PLC I/O cards)
- Industrial automation
- Data acquisition systems
Q & A
- What is the resolution of the AD5687RBRUZ-RL7 DAC?
The AD5687RBRUZ-RL7 has a resolution of 12 bits).
- What is the operating voltage range of the AD5687RBRUZ-RL7?
The device operates from a single 2.7 V to 5.5 V supply).
- What are the available package options for the AD5687RBRUZ-RL7?
The device is available in 3 mm × 3 mm LFCSP and TSSOP packages).
- What is the gain select feature of the AD5687RBRUZ-RL7?
The device has a gain select pin that allows for full-scale output of either 2.5 V or 5 V).
- How does the power-on reset circuit work in the AD5687RBRUZ-RL7?
The power-on reset circuit and RSTSEL pin ensure that the DAC outputs power up to zero scale or midscale and remain there until a valid write takes place).
- What is the maximum clock rate of the SPI interface in the AD5687RBRUZ-RL7?
The SPI interface operates at clock rates up to 50 MHz).
- What are the key accuracy specifications of the AD5687RBRUZ-RL7?
The device has a relative accuracy of ±2 LSB, gain error of ±0.1% FSR, and offset error of ±1.5 mV).
- What are the typical power consumption values for the AD5687RBRUZ-RL7?
The device consumes 0.59 mA to 0.7 mA in normal mode and 1 μA to 4 μA in power-down mode).
- What are some common applications of the AD5687RBRUZ-RL7?
Common applications include optical transceivers, base station power amplifiers, process control, industrial automation, and data acquisition systems).
- What is the temperature range for the AD5687RBRUZ-RL7?
The device operates over a temperature range of −40°C to +105°C).
