This product is a 16-bit, 468.75 kHz Sigma-Delta ADC, which is manufactured using CMOS technology. It has low power consumption and can be easily interfaced with modern microcontrollers and digital signal processors through serial or parallel ports.
The AD7721 is a 12‑/16‑bit sigma‑delta analog‑to‑digital converter that operates from a +5 V supply. It offers both serial and parallel interfaces, allowing high‑speed data access for microcontrollers and DSPs. The device uses a single‑bit DAC in the modulator to achieve excellent linearity and includes on‑chip calibration for offset and gain.
Key features include a 468.75 kHz output word rate, low power consumption (as low as 100 µW in standby), and selectable input ranges (±1.25 V bipolar or 0‑2.5 V unipolar). The integrated FIR filters reduce external anti‑aliasing requirements, and the part supports clock frequencies up to 15 MHz (serial) or 10 MHz (parallel).