AD5821 is a 120 mA current sinking, 10-bit I2C DAC. It features integrated current sense resistor, low noise preamplifier, and is suitable for various applications.
The AD5821 is a 10‑bit digital‑to‑analog converter capable of sinking up to 120 mA. It operates from a single 2.7 V to 5.5 V supply and is controlled via a 2‑wire I²C‑compatible serial interface that supports clock rates up to 400 kHz. The device includes an internal reference, power‑down function, and guaranteed monotonicity over all codes.
Designed for consumer camera applications such as lens autofocus, image stabilization, and optical zoom, the AD5821 is also suitable for industrial uses including heater, fan, cooler, solenoid, valve, and light control. The datasheet details electrical specifications, timing diagrams, pin assignments, and mechanical dimensions for board integration.
| Maximum Sink Current | 120 mA |
|---|---|
| Resolution | 10 bits |
| Supply Voltage (Vop) | 2.7 V to 5.5 V |
| Power‑down Current | 0.5 pA (typical) |
| I²C Address | 0x18 |
| Operating Temperature Range | -30°C to +85°C (industrial) |
| I²C Clock Frequency | up to 400 kHz |
The AD5821 uses the I²C address 0x18.
The device can sink up to 120 mA.
In power‑down mode the AD5821 draws about 0.5 pA typical.
It operates from a supply voltage of 2.7 V to 5.5 V.