The AD549JH from Analog Devices Inc. is a high precision, low noise, monolithic operational amplifier. It is an exemplary device for applications that demand low noise and high input impedance. The AD549JH is widely used in instrumentation, medical equipment, and professional audio systems where signal integrity is paramount.

Key Features

• Ultra-Low Input Bias Current: The AD549JH boasts a typical input bias current of just 60 femtoamperes, making it ideal for circuits with high source impedances.
• Low Offset Voltage: With a maximum offset voltage of 1 mV and a low drift over time and temperature, this op-amp ensures a high degree of accuracy in sensitive applications.
• High Input Impedance: The input impedance of the AD549JH is on the order of 10^13 ohms, which minimizes loading on high-impedance sources.
• Low Noise: A voltage noise density of just 4 nV/√Hz at 1 kHz ensures that the AD549JH contributes minimal noise to the signal path.
• Wide Supply Range: The device can be operated from a single supply of +5 V to +15 V, or dual supplies of ±2.5 V to ±15 V, providing flexibility for various circuit designs.

Applications

• Electrocardiogram (ECG) Amplifiers
• Photodiode Preamps
• Precision Instrumentation
• Data Acquisition Systems
• Professional Audio Equipment

The AD549JH is available in a hermetically sealed TO-99 can package, ensuring its performance in harsh environments and making it suitable for military and aerospace applications. Its combination of ultra-low input bias current, low offset voltage, and low noise makes it an exceptional choice for designers who require the utmost accuracy and signal fidelity.

For detailed specifications, application notes, and support resources, visit the Analog Devices Inc. website or contact their technical support team.