The AD9258 is a 14-bit, 80 MSPS/105 MSPS/125 MSPS, 1.8 V dual analog-to-digital converter (ADC) with high integration and low power. It operates from a 1.8 V analog supply and a 1.8 V CMOS or LVDS output supply.
The AD9258 is a dual, 14‑bit analog‑to‑digital converter designed for communications and high‑speed data‑receiver applications. It supports sample rates of 80, 105 and 125 MSPS, operates from a single 1.8 V analog supply and a separate 1.8 V digital output driver supply, and provides both CMOS and LVDS output options.
Configuration is performed via a 3‑wire SPI‑compatible serial interface, and the device includes built‑in self‑test (BIST) features, power‑down modes, and a duty‑cycle stabilizer for optimal performance across its operating range. Detailed specifications, pin descriptions, timing diagrams and design guidelines are provided throughout the document.
| Resolution | 14 bits |
|---|---|
| Maximum Sample Rate | 125 MSPS |
| Power Consumption (125 MSPS) | 750 mW |
| Analog Input Range | 1 V p‑p to 2 V p‑p |
| Output Interface | 1.8 V CMOS or LVDS |
| Signal‑to‑Noise Ratio (70 MHz, 125 MSPS) | 77.6 dBFS |
| Spurious‑Free Dynamic Range (70 MHz, 125 MSPS) | 88 dBc |
The device supports sample rates up to 125 MSPS (also 80 MSPS and 105 MSPS).
The AD9258 includes power‑down modes and can operate at as low as 750 mW at 125 MSPS.
Configuration is performed via a 3‑wire SPI‑compatible serial interface.