The AD5680 is a single-channel, 18-bit digital-to-analog converter with 18-bit monotonicity and 12-bit accuracy. It is available in an 8-lead SOT-23 package and operates from a 4.5V to 5.5V power supply. The device features a power-on reset to zero scale/midscale, serial interface, rail-to-rail operation, and SYNC interrupt facility. It is suitable for closed-loop process control, low bandwidth data acquisition systems, portable battery-powered instruments, and gain and offset adjustment applications.
The AD5680 is a single‑channel, 18‑bit buffered voltage‑output digital‑to‑analog converter offered in a tiny 8‑lead SOT‑23 package. It operates from a 4.5 V to 5.5 V supply, provides rail‑to‑rail output, and includes a power‑on reset that can initialize the output to zero scale or midscale. The device features a versatile 3‑wire serial interface compatible with SPI, QSPI, Microwire, and DSP standards, making it suitable for portable, battery‑powered instruments.
Typical applications include closed‑loop process control, low‑bandwidth data acquisition, and precision set‑point control. The datasheet details specifications such as 18‑bit resolution, ±12‑bit guaranteed accuracy, 1.6 mW power consumption at 5 V, and operation over –40 °C to +105 °C. Pin configurations, timing characteristics, and absolute maximum ratings are also provided for system designers.
| Resolution | 18 Bits |
|---|---|
| Relative Accuracy | +32 to +64 LSB |
| Differential Nonlinearity | +1 LSB (50 Hz) / +2 LSB (300 Hz) |
| Zero‑Code Error | 2 mV to 10 mV |
| Full‑Scale Error | -0.2 % to -1 % FSR |
| Power Consumption | 1.6 mW at 5 V |
| Supply Voltage Range | 4.5 V to 5.5 V |
| Operating Temperature Range | –40 °C to +105 °C |
| Output Voltage Range | 0 V to Vref |
| Slew Rate | 1.5 V/µs |
The AD5680 operates from a single 4.5 V to 5.5 V supply.
Typical power consumption is 1.6 mW at 5 V.
The B version is rated for –40 °C to +105 °C.
It provides 18‑bit resolution.