AD7654 is a 16-bit, 500kSPS dual-channel analog-to-digital converter manufactured by American Analog Devices.
The AD7654 is a 16‑bit charge‑redistribution SAR analog‑to‑digital converter that operates from a single 5 V supply. It provides two low‑noise, wide‑bandwidth track‑and‑hold amplifiers for simultaneous sampling of four input channels and offers both parallel and serial digital interfaces.
Key features include 500 kSPS normal‑mode throughput (444 kSPS in impulse mode), ±3.5 LSB integral nonlinearity with no missing codes, 89 dB SNR at 100 kHz, and low power dissipation (120 mW typical). Typical applications are AC motor control, three‑phase power control, multi‑channel data acquisition, and UPS systems.
| Resolution | 16 bits |
|---|---|
| Throughput (normal mode) | 500 kSPS |
| Throughput (impulse mode) | 444 kSPS |
| Power dissipation (500 kSPS) | 120 mW typical |
| Analog input voltage range | 0 V to 5 V |
| Integral nonlinearity (INL) | ±3.5 LSB |
| Signal‑to‑Noise Ratio (100 kHz) | 89 dB |
| Operating temperature range | -40 °C to +85 °C |
The AD7654 can sample at up to 500 kSPS in normal mode and 444 kSPS in impulse (low‑power) mode.
It operates from a single 5 V supply (AVDD = DVDD = 5 V) with an optional OVDD range of 2.7 V to 5.25 V.
Yes, it has two sample‑and‑hold circuits that allow simultaneous sampling of two input channels.