The AD9258 is a 14-bit, 80 MSPS/105 MSPS/125 MSPS, 1.8 V dual analog-to-digital converter (ADC). It features high signal-to-noise ratio, low power consumption, programmable internal ADC voltage reference, etc.
The AD9258 is a dual, 14‑bit analog‑to‑digital converter designed for communications and high‑performance applications. It operates from a single 1.8 V supply, provides both CMOS and LVDS output options, and includes a 3‑wire SPI‑compatible serial interface for configuration and control.
Key features include a flexible analog input range (1 V‑p‑p to 2 V‑p‑p), on‑chip dither for improved SFDR, low power consumption (as low as 750 mW at 125 MSPS), and extensive built‑in self‑test capabilities. The device is offered in a 64‑lead LFCSP package and is rated for industrial temperature operation (‑40 °C to +85 °C).
| Resolution | 14 bits |
|---|---|
| Maximum Sample Rate | 125 MSPS |
| Power Consumption (DC Input) | 462 mW – 777 mW |
| Signal‑to‑Noise Ratio (SNR) | 77.6 dBFS @ 70 MHz, 125 MSPS |
| Spurious‑Free Dynamic Range (SFDR) | 88 dBc @ 70 MHz, 125 MSPS |
| Analog Input Range | 1 V‑p‑p to 2 V‑p‑p |
| Supply Voltage | AVDD 1.8 V, DRVDD 1.8 V |
The AD9258 can sample at up to 125 MSPS.
Its DC input power ranges from about 462 mW at 80 MSPS to 777 mW at 125 MSPS.
The device provides 1.8 V CMOS or LVDS output drivers, selectable via a 3‑wire SPI‑compatible serial interface.
It achieves an SNR of 77.6 dBFS at 70 MHz when operating at 125 MSPS.