ADA4805-1/2 Rail-to-Rail Amplifier

ADI's ADA4805-1/2 are high-speed voltage feedback, rail-to-rail output amplifiers with an exceptionally low quiescent current of 500 µA, making them ideal for low-power, high resolution data conversion systems. Despite being low-power, these amplifiers provide excellent overall performance. They offer a high bandwidth of 105 MHz at a gain of +1, a high slew rate of 160 V/µs, and a low input offset voltage of 125 µV (maximum).

A shutdown pin allows further reduction of the quiescent supply current to 2.9 µA. For power sensitive applications, the shutdown mode offers a very-fast turn on time of 3 µs. This allows the user to dynamically manage the power of the amplifier by turning the amplifier off between ADC samples.

The ADI proprietary extra fast complementary bipolar (XFCB) process allows for both low voltage and low current noise (5.9 nV/√Hz, 0.6 pA/√Hz). The ADA4805-1/2 operate over a wide range of supply voltages from ±1.5 V to ±5 V, as well as single 3 V and 5 V supplies, making them ideal for high-speed, low-power instruments.