LTC2258-12/LTC2257-12/LTC2256-12 are 12-bit sampling ADC converters designed for digitizing high frequency, wide dynamic range signals. They feature low power consumption, multiple output options, selectable input ranges, fast sampling rates, and optional configurations.
The LTC2258‑12, LTC2257‑12 and LTC2256‑12 are 12‑bit analog‑to‑digital converters offering ultra‑low power consumption and a single‑supply 1.8 V operation. They provide selectable output formats (CMOS full‑rate, double‑data‑rate, and LVDS) and support high‑speed sampling up to 65 MHz, 40 MHz or 25 MHz depending on the part.
The devices are supplied in a 40‑lead plastic QFN package (6 mm × 6 mm) and include features such as shutdown/nap modes, clock‑duty‑cycle stabilization, and optional data randomizer. Detailed electrical specifications, timing diagrams, and ordering information are provided throughout the document.
| Resolution | 12 bits |
|---|---|
| Typical SNR (5 MHz input) | 70.8 dB |
| Typical SFDR (5 MHz input) | 90 dB |
| Typical Power Dissipation (DC input) | 34 mW |
| Supply Voltage | 1.8 V |
| Full‑Power Bandwidth | 800 MHz |
| Package | 40‑lead Plastic QFN (6 mm × 6 mm) |
The typical power dissipation for the LTC2258‑12 under DC input conditions is 34 mW.
It operates from a single 1.8 V supply.
The part is offered in a 40‑lead plastic QFN package measuring 6 mm × 6 mm.