AT8091

Overview

The AT8091 is a single-channel, high-speed CMOS voltage feedback operational amplifier manufactured by Analog Technologies, Inc. It features rail-to-rail output capability and operates on a single supply ranging from +2.5V to +5.5V. The device provides a typical -3dB small-signal bandwidth of 350MHz at a gain of +1, with a quiescent current consumption of 4.2mA per amplifier. It supports an operating temperature range from −40°C to +125°C and is available in compact SOT23-5 and SC70-5 surface-mount packages.

Feature Summary

• Rail-to-rail output swing maximizes dynamic range for low-voltage single-supply applications
• High-speed performance with 350MHz bandwidth suitable for video and signal processing
• Low input bias current of 1pA ideal for high-impedance sensor interfaces
• Compact footprint designs utilizing SOT23-5 and SC70-5 packages

Applications

• Photodiode preamplifier circuits
• Professional video and camera signal conditioning
• Drivers for analog-to-digital converters
• Active filters in communication systems

Procurement Notes

Verify the specific package option (SOT23-5 or SC70-5) and ordering suffix against the manufacturer's latest documentation before procurement. Confirm that the application environment remains within the specified absolute maximum ratings, particularly regarding junction temperature and power supply limits. Ensure proper board layout practices are followed to maintain stability when driving capacitive loads.

Selection Notes

Select the AT8091 when high bandwidth and rail-to-rail output are required in a single-channel configuration. Consider the AT8091N variant if a power-down disable feature is necessary to reduce supply current in portable designs. Evaluate thermal resistance characteristics based on the chosen package type to ensure adequate heat dissipation under continuous operation.

Part Context

The AT8091 belongs to the AT809X family of high-speed op-amps, which includes dual (AT8092) and quad (AT8094) channel variants. This series is designed to offer performance characteristics typically found in current feedback amplifiers while maintaining the ease of use associated with voltage feedback topologies. The family shares common electrical specifications and application guidelines across different channel counts.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material.