AD848/AD849 are high speed, low power monolithic operational amplifiers. The AD848 is internally compensated so that it is stable for closed loop gains of 5 or greater. The AD849 is fully decompensated and is capable of very high gain bandwidth product across the entire frequency range with extremely low nonlinearity distortion at high gain.
The AD848 and AD849 are monolithic operational amplifiers designed for high‑speed, low‑power applications. The AD848 is internally compensated for stable gains of 5 × or higher, while the AD849 is fully de‑compensated and stable at gains greater than 24. Both devices use Analog Devices’ junction‑isolated complementary bipolar process, drawing only 4.8 mA supply current.
These amplifiers are suited for video instrumentation, low‑noise pre‑amps, line drivers, and data‑acquisition systems. The document provides detailed electrical specifications, absolute maximum ratings, recommended grounding and bypassing practices, and example circuit configurations such as offset‑nulling and video line‑driver implementations.
| Gain Bandwidth (AD848) | 175 MHz |
|---|---|
| Gain Bandwidth (AD849) | 725 MHz |
| Supply Current | 4.8 mA |
| Slew Rate (±5 V) | 200 V/µs |
| Input Voltage Noise (10 kHz, +15 V) | 3 nV/√Hz |
| Package Types | Plastic (N), Small Outline (R), Cerdip (Q), LCC (E) |
| Quiescent Current (+5 V) | 4.8 mA |
They are offered in Plastic (N), Small Outline (R), Cerdip (Q), and LCC (E) packages.
The typical quiescent current is 4.8 mA at a +5 V supply.