AD9231 is a 12-bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS, 1.8 V dual analog-to-digital converter.
The AD9231 is a monolithic, dual‑channel, 12‑bit analog‑to‑digital converter that operates from a single 1.8 V analog supply and supports 1.8 V to 3.3 V digital output driver supplies. It offers high‑performance sample‑and‑hold circuitry, on‑chip voltage reference, and a flexible serial port interface for configuration and test pattern generation. The device is targeted at communications, radar/LIDAR, medical imaging, and portable instrumentation applications.
The datasheet details electrical specifications such as up to 80 MSPS conversion rates, 700 MHz analog input bandwidth, low power consumption (32 mW per channel at 20 MSPS), and various output data formats. It also includes pin‑out diagrams, timing requirements, package dimensions (64‑lead LFCSP), and ordering information.
| Resolution | 12 bits |
|---|---|
| Maximum Sample Rate | 80 MSPS |
| Analog Input Bandwidth | 700 MHz |
| Power Consumption (20 MSPS) | 32 mW per channel |
| Signal‑to‑Noise Ratio (9.7 MHz) | 71.3 dBFS |
| Supply Voltage (AVDD) | 1.8 V |
| Package | 64‑lead LFCSP (CP‑64‑4) |
The AD9231 operates from a single 1.8 V analog supply and uses a separate digital output driver supply that can be 1.8 V or 3.3 V.
The device provides a 700 MHz analog input bandwidth.
Data can be output in offset binary, gray code, or two’s complement format.
Power consumption is 32 mW per channel at a 20 MSPS sample rate.