The document describes the features and characteristics of the AD848 and AD849, which are high speed, low power monolithic operational amplifiers. The AD848 has a gain bandwidth of 725 MHz and a supply current of 4.8 mA, suitable for applications with closed loop gains of 5 or greater. The AD849, on the other hand, is fully decompensated and has a gain bandwidth of 175 MHz and an input voltage noise of 3 nV/√Hz, making it suitable for specific applications. Both products can be used in cable drivers, 8- and 10-bit data acquisition systems, video and RF amplification, and signal generators.
This document provides a technical overview of the AD848 and AD849 operational amplifiers from Analog Devices. These devices are described as high-speed, low-power monolithic op amps utilizing junction-isolated complementary bipolar (CB) process technology. The AD848 is internally compensated for closed-loop gains of 5 or greater, while the AD849 is fully decompensated and stable at gains greater than 24.
| Gain Bandwidth (AD849) | 725 MHz |
|---|---|
| Gain Bandwidth (AD848) | 175 MHz |
| Supply Current | 4.8 mA |
| Slew Rate (AD849) | 300 V/s |
| Settling Time to 0.1% (AD849) | 80 ns |
| Input Voltage Noise (AD849) | 3 nV/VHz |
| Open Loop Gain into 1 kΩ Load (AD849) | 85 V/mV |
| Input Offset Voltage Max | 1 mV |
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 stable at gains greater than 24.
They are optimized and tested for +5 V and +15 V power supply operation.