This document introduces the features and characteristics of the Analog Devices AD7678 18-bit, 2.5 LSB INL, 100 kSPS SAR ADC.
The AD7678 is an 18‑bit, 100 kSPS charge‑redistribution SAR analog‑to‑digital converter that operates from a single 5 V supply. It offers high accuracy with an INL of +2.5 LSB max and no missing codes.
This handbook contains the full specification table, absolute maximum ratings, pin configuration, digital and serial interface timing, power dissipation versus throughput, and typical performance characteristics for designers and engineers.
| Resolution | 18 Bits |
|---|---|
| Maximum Throughput | 100 kSPS |
| Integral Non‑Linearity (INL) | +2.5 LSB max |
| Power Dissipation @ 100 kSPS | 18 mW |
| Supply Voltage (AVDD) | 4.75‑5.25 V |
| Dynamic Range | 103 dB typ |
| Signal‑to‑Noise Ratio (SNR) | 100 dB typ @ 2 kHz |
The AD7678 can sample at up to 100 kSPS.
It operates from a single 5 V supply, with AVDD specified as 4.75‑5.25 V.
No, the device provides 18‑bit resolution with no missing codes.
The integral non‑linearity is limited to +2.5 LSB max.