The AD7866 is a dual 12‑bit high‑speed, low‑power successive‑approximation ADC. It operates from a single 2.7 V to 5.25 V supply and provides up to 1 MSPS throughput per channel, with each channel preceded by a low‑noise, wide‑band track‑and‑hold amplifier capable of handling input frequencies above 10 MHz.
Key features include flexible power/throughput management, on‑chip 2.5 V reference, simultaneous conversion on two channels, and a 20‑lead thin‑shrink small‑outline (TSSOP) package. The device supports SPI, QSPI, Microwire, and DSP‑compatible serial interfaces and offers various power‑saving modes.
| Power Consumption (3 V) | 11.4 mW max |
|---|---|
| Supply Voltage | 2.7 V to 5.25 V |
| Package | 20‑lead TSSOP |
| Signal‑to‑Noise Ratio | 70 dB at 300 kHz |
It consumes a maximum of 11.4 mW when operating at 3 V.
The device is offered in a 20‑lead thin‑shrink small‑outline (TSSOP) package.
It supports a 0 V to VREF range or a 2 × VREF range depending on the RANGE pin setting.