The AD7390/AD7391 is a 3V serial-input micropower 10-bit and 12-bit DAC. It features micropower consumption, single-supply operation, and compact package, making it suitable for automotive, portable communications, and digitally controlled calibration applications.
The AD7390 and AD7391 are pin‑compatible, single‑supply digital‑to‑analog converters offering 12‑bit (AD7390) or 10‑bit (AD7391) resolution. They operate from 2.7 V to 5.5 V, consume less than 100 µA, and provide rail‑to‑rail output suitable for battery‑powered applications. The devices feature a SPI‑compatible serial‑input register (SDI, CLK, LD) and a CLR pin for zero‑scale reset.
The datasheet includes functional block diagrams, pin descriptions, electrical characteristics, timing diagrams, and typical performance graphs. Key specifications such as resolution, supply range, output current capability, input resistance, and power‑supply rejection are detailed, along with recommended PCB layout and supply‑bypass guidelines.
| Resolution | 12‑bit (AD7390), 10‑bit (AD7391) |
|---|---|
| Supply Voltage Range | 2.7 V to 5.5 V |
| Power Consumption | < 100 µA |
The devices operate from 2.7 V to 5.5 V.
Both parts consume less than 100 µA of current.
The AD7390 provides 12‑bit resolution, while the AD7391 provides 10‑bit resolution.
A SPI‑compatible serial‑input register using SDI, CLK and LD pins.