The document provides details about the features and characteristics of the AD7643, an 18-bit, 1.25 MSPS PulSAR® ADC. It includes a description of the product based on factors such as speed, accuracy, dynamic range, and signal-to-noise ratio.
The AD7643 is an 18‑bit, 1.25 MSPS PulSAR analog‑to‑digital converter that operates from a single 2.5 V supply. It offers a high‑speed sampling ADC, internal 2.048 V reference, and both serial and parallel interfaces, with no latency and no missing codes.
The document provides full electrical specifications, timing diagrams, absolute maximum ratings, pin descriptions, and layout guidelines to help designers integrate the device into PCB designs. Ordering information and package options are also included.
| Resolution | 18 bits |
|---|---|
| Throughput | 1.25 MSPS |
| Power dissipation (typical) | 65 mW @ 1.25 MSPS with internal reference |
| Internal reference voltage | 2.048 V |
| Operating temperature range | -40°C to +85°C |
| Dynamic range (typical) | 95 dB |
The AD7643 can sample at up to 1.25 MSPS.
It operates from a single 2.5 V power supply.
Typical power dissipation is 65 mW at 1.25 MSPS with the internal reference.
The device includes a 2.048 V internal reference.