The document describes the features and characteristics of the AD8139 differential ADC driver, including low noise, rail-to-rail operation, differential input and output, and high speed.
The AD8139 is a low‑noise, rail‑to‑rail differential ADC driver offering high speed (410 MHz 3‑dB bandwidth) and excellent linearity (SFDR up to 98 dBc). It supports both fully differential and single‑ended‑to‑differential configurations, with adjustable output common‑mode voltage and a wide supply range of 4.5 V to 6 V.
The document includes functional block diagrams, pin configurations for the 8‑lead SOIC and LFCSP packages, absolute maximum ratings, thermal resistance data, and an ordering guide for the various package options. Detailed electrical specifications such as input noise, slew rate, and power dissipation are provided for designers.
| Input voltage noise (100 kHz) | 2.25 nV/√Hz |
|---|---|
| Input current noise (100 kHz) | 2.1 pA/√Hz |
| Operating supply range | +4.5 V to +6 V |
| Quiescent current | 25.5 mA (typ) |
| Operating temperature range | -40 °C to +125 °C |
| Maximum output current per side | 100 mA |
The AD8139 can operate from –40 °C up to +125 °C.
The typical quiescent current is about 25.5 mA.