The AD7723 is a complete 16-bit sigma-delta ADC. The part operates from a 5 V supply. The analog input is continuously sampled, eliminating the need for an external sample-and-hold. The modulator output is processed by a finite impulse response (FIR) digital filter. The on-chip filtering combined with a high oversampling ratio reduces the external antialias requirements to first order in most cases. The digital filter frequency response can be programmed to be either low-pass or band-pass. The AD7723 provides 16-bit performance
The AD7723 is a complete 16‑bit sigma‑delta analog‑to‑digital converter that operates from a single 5 V supply. It continuously samples the analog input, eliminating the need for an external sample‑and‑hold circuit, and provides on‑chip filtering with selectable low‑pass or band‑pass modes. Data can be accessed via parallel or serial interfaces, and a stereo mode allows two devices to share one serial data line.
The device is offered in a 44‑lead MQFP package, supports an operating temperature range of –40 °C to +85 °C, and includes an on‑chip 2.5 V reference (or an external reference). Key performance figures include up to 87 dB SNR, –96 dB THD, and a standby power consumption of 200 µW.