The AD7641 is a new high-performance ADC from Analog Devices. The device has a conversion rate of 2 MSPS and an 18-bit resolution, and supports multiple interfaces to meet different application needs.
The AD7641 is an 18‑bit, 2 MSPS SAR analog‑to‑digital converter that operates from a single 2.5 V supply. It offers both serial and parallel interfaces, an internal 2.048 V reference, and a fully differential input stage.
The datasheet provides detailed specifications, timing diagrams, pin descriptions, absolute maximum ratings, and application information for use in medical instruments, high‑speed data acquisition, DSP, and instrumentation.
| Resolution | 18 Bits |
|---|---|
| Maximum Throughput (wideband warp mode) | 2 MSPS |
| Input Voltage Range | ±VREF (VREF up to 2.5 V) |
| Power Dissipation (typical, 2 MSPS, internal REF) | 75 mW |
| Internal Reference Voltage | 2.048 V |
| Dynamic Range | 95.5 dB |
| Signal‑to‑Noise Ratio (20 kHz, VREF=2.5 V) | 93.5 dB |
The AD7641 can sample at up to 2 MSPS in wideband warp mode.
The device operates from a single 2.5 V supply (AVDD = DVDD = 2.5 V).
Yes, it includes a 2.048 V internal reference with typical drift of ±10 ppm/°C.