AD7398/AD7399 is a quad serial-input 12-bit/10-bit DAC with wide applications in automotive output voltage span, portable communications, digitally controlled calibration, and PC peripherals. The product features programmable power shutdown, single or dual supply operation, 3-wire serial SPI-compatible interface, internal power-on reset, double buffered registers for simultaneous multichannel DAC update, and more.
The AD7398/AD7399 family are quad voltage‑output digital‑to‑analog converters offering 12‑bit (AD7398) or 10‑bit (AD7399) resolution. They operate from a single 3 V‑5 V supply or a dual ±5 V supply and feature a 3‑wire SPI‑compatible serial interface, double‑buffered registers, and programmable power‑shutdown.
The document lists detailed electrical specifications, timing diagrams, absolute maximum ratings, pin‑out descriptions, and ordering information. It also includes typical performance curves, application notes for automotive and portable communications, and guidance for microprocessor interfacing.
| Resolution | 12 bits (AD7398) / 10 bits (AD7399) |
|---|---|
| Supply Voltage Range | 3 V to 5 V (single) or ±5 V (dual) |
| Relative Accuracy (INL) | ±1.5 LSB |
| Differential Nonlinearity (DNL) | ±1 LSB max |
| Shutdown Supply Current (IDD_SD) | 30 µA typical, 60 µA max |
| Output Current (IOUT) | ±5 mA typical |
| Operating Temperature Range | ‑40 °C to +125 °C |
The AD7398 can be powered from a single 3 V to 5 V supply or from a dual ±5 V supply.
The shutdown supply current is typically 30 µA and up to 60 µA without load.
The AD7399 provides 10‑bit resolution.
Both devices are specified for operation from –40 °C to +125 °C.