The AD7686 is a 16-bit, 500 kSPS PulSAR ADC in MSOP/QFN. Its features include 16-bit resolution, 500 kSPS sampling rate, ±0.6 LSB typical error, 92.5 dB @ 20 kHz SINAD, −110 dB @ 20 kHz THD, etc.
The AD7686 is a 16‑bit, charge‑redistribution successive‑approximation ADC that operates from a single 5 V supply. It offers a 500 kSPS maximum throughput, no missing codes, and a versatile serial interface compatible with SPI, QSPI, Microwire and DSP protocols. The device is available in 10‑lead MSOP and QFN (LFCSP) packages and operates from –40 °C to +85 °C.
Key features include ±0.6 LSB typical INL, 92.5 dB SINAD at 20 kHz, –110 dB THD, ultra‑low standby current (1 nA), and optional daisy‑chain capability with a busy indicator. The ADC supports multiple logic levels (1.8 V, 2.5 V, 3 V, 5 V) via a separate VIO supply.
| Resolution | 16 bits |
|---|---|
| Maximum Throughput | 500 kSPS |
| Integral Nonlinearity (INL) | ±0.6 LSB typical, ±2 LSB max |
| Signal‑to‑Noise Ratio (SINAD) | 92.5 dB @ 20 kHz |
| Total Harmonic Distortion (THD) | −110 dB @ 20 kHz |
| Standby Current | 1 nA |
| Supply Voltage (VDD) | 4.5 V to 5.5 V |
| Input Voltage Range | 0 V to VREF (VREF up to VDD) |
The AD7686 can sample up to 500 kSPS.
It operates from a single supply of 4.5 V to 5.5 V.
Yes, the device works from a single 5 V supply.
The standby current is only 1 nA.