The AD7608 is an 18‑bit, 8‑channel synchronous‑sampling ADC with up to 200 kSPS sample rate and integrated analog input protection.
The AD7608 is an 18‑bit, 8‑channel synchronous‑sampling data‑acquisition system (DAS) that integrates analog input clamp protection, a second‑order anti‑aliasing filter, a track‑and‑hold amplifier, a charge‑redistribution SAR ADC, flexible digital filtering, a 2.5 V reference, and high‑speed parallel and serial interfaces. It operates from a single 5 V supply and can handle true bipolar inputs of ±10 V or ±5 V.
The device offers a typical signal‑to‑noise ratio of 98 dB, total harmonic distortion of –107 dB, and low power consumption (≈115 mW in normal mode, 42 mW in standby). It is supplied in a 64‑lead LQFP package and is intended for applications such as power‑line monitoring, multi‑phase motor control, instrumentation, and control systems. This manual is written in Chinese.
| Resolution | 18 bits |
|---|---|
| Number of Channels | 8 |
| Maximum Sample Rate | 200 kSPS |
| Input Voltage Range | ±10 V (range = 1) or ±5 V (range = 0) |
| Input Impedance | 1 MΩ |
| Signal‑to‑Noise Ratio (SNR) | 98 dB |
| Total Harmonic Distortion (THD) | –107 dB |
| Operating Temperature Range | −40 °C to +85 °C |
| Package | 64‑lead LQFP |
The AD7608 accepts true bipolar inputs of ±10 V (range = 1) or ±5 V (range = 0).
It can sample at up to 200 kSPS across all eight channels.
The typical SNR is 98 dB.