Overview
The AD5675RARUZ-REEL7, produced by Analog Devices Inc., is a low-power, octal, 16-bit buffered voltage output digital-to-analog converter (DAC). This device is part of the nanoDAC+® family and is designed for high precision and low power consumption. It features a 2.5 V, 2 ppm/°C internal reference and a user-selectable gain of 1 or 2, allowing for full-scale output of 2.5 V or 5 V, respectively. The AD5675R operates from a single 2.7 V to 5.5 V supply and is guaranteed monotonic by design. It is available in a 20-lead TSSOP package and includes a power-on reset circuit and a power-down mode to reduce current consumption to 1 μA typical.
Key Specifications
| Parameter | Specification |
|---|---|
| Resolution | 16-bit |
| Number of DACs | Octal (8 channels) |
| Internal Reference | 2.5 V, 2 ppm/°C typical |
| Gain Select | User-selectable gain of 1 or 2 |
| Full-Scale Output | 2.5 V (gain = 1), 5 V (gain = 2) |
| Supply Voltage | 2.7 V to 5.5 V |
| Operating Temperature Range | −40°C to +125°C |
| Interface | 400 kHz I2C-compatible serial interface |
| Logic Compatibility | 1.8 V logic compatible |
| Output Voltage Range | 0 V to 2.5 V (gain = 1), 0 V to 5 V (gain = 2) |
| Output Current Drive | 15 mA |
| Settling Time | 5 μs (¼ to ¾ scale settling to ±2 LSB) |
| Power-Down Current | 1 μA typical |
Key Features
- High relative accuracy: ±3 LSB maximum INL for the AD5675R.
- Low drift, 2.5 V on-chip reference with 2 ppm/°C typical drift.
- User-selectable gain of 1 or 2, allowing for full-scale output of 2.5 V or 5 V.
- Low power consumption with a power-down mode reducing current to 1 μA typical.
- 400 kHz I2C-compatible serial interface and 1.8 V logic compatibility.
- Power-on reset circuit and RSTSEL pin for controlling output at power-up.
- Rail-to-rail output amplifiers.
- Guaranteed monotonic by design.
Applications
- Optical transceivers.
- Base station power amplifiers.
- Process control (PLC input/output cards).
- Industrial automation.
- Data acquisition systems.
Q & A
- What is the resolution of the AD5675R DAC?
The AD5675R has a resolution of 16 bits.
- How many DAC channels does the AD5675R have?
The AD5675R is an octal DAC, meaning it has 8 channels.
- What is the internal reference voltage and its drift rate?
The internal reference voltage is 2.5 V with a drift rate of 2 ppm/°C typical.
- What are the possible gain settings for the AD5675R?
The gain can be set to either 1 or 2, resulting in full-scale outputs of 2.5 V or 5 V, respectively.
- What is the operating temperature range of the AD5675R?
The operating temperature range is −40°C to +125°C.
- What type of interface does the AD5675R use?
The AD5675R uses a 400 kHz I2C-compatible serial interface.
- Is the AD5675R compatible with 1.8 V logic?
- What is the output current drive capability of the AD5675R?
The output current drive is 15 mA.
- How long does it take for the AD5675R to settle to ±2 LSB?
The settling time is 5 μs (¼ to ¾ scale settling to ±2 LSB).
- What is the current consumption in power-down mode?
The current consumption in power-down mode is 1 μA typical.
