The AD8138 is a low‑distortion differential ADC driver that converts single‑ended signals to differential form and can also function as a differential‑to‑differential amplifier. It offers adjustable output common‑mode voltage, externally adjustable gain, and a wide supply range, making it easy to integrate with high‑performance ADCs.
The datasheet provides full electrical specifications, pin configurations, ordering information, and typical application circuits. Key performance figures include a 3 dB bandwidth of 320 MHz, 1150 V/ps slew rate, and very low input voltage noise, all while consuming only 90 mW at a 5 V supply.
| 3 dB Bandwidth | 320 MHz |
|---|---|
| Slew Rate | 1150 V/ps |
| Input Voltage Noise | 5 nV/√Hz |
| Supply Voltage Range | +3 V to +5 V |
| Gain Flatness | 0.1 dB to 40 MHz |
| Quiescent Current | 18‑23 mA |
The device operates from –40 °C to +85 °C.
The input voltage range is specified as +3.8 V.
The AD8138 is designed for a supply range of +3 V to +5 V.