AD549 Ultra low Input Bias Current Operational Amplifier TO-8 Package

The AD549 is a monolithic electrometer operational amplifierwith very low input bias current. Input offset voltage and inputoffset voltage drift are laser trimmed for precision performance.The AD549’s ultralow input current is achieved with “Topgate”JFET technology, a process development exclusive to AnalogDevices. This technology allows the fabrication of extremely lowinput current JFETs compatible with a standard junction-isolated bipolar process. The 1015Ω common-mode impedance,a result of the bootstrapped input stage, insures that the inputcurrent is essentially independent of common-mode voltage. The AD549 is suited for applications requiring very low input current and low input offset voltage. It excels as a preamp for a wide variety of current output transducers such as photodiodes, photo multiplier tubes, or oxygen sensors. The AD549 can also be used as a precision integrator or low droop sample and hold. The AD549 is pin compatible with standard FET and electrom-eter op amps, allowing designers to upgrade the performance of present systems at little additional cost. Applications:- Electrometer Amplifier Photodiode Preamp pH Electrode Buffer Features and Specifications:- Manufacturer Part No: AD549JH Manufacturer: Analog Devices Inc Product Type: Precision Amplifiers Series: AD549 Number of Channels: 1 Channel Gain Bandwidth Product: 1 MHz Slew Rate: 3V/us Common Mode Rejection Ratio: 90dB Input Bias Current: 11pA Input Offset Voltage: 500uV Input Voltage Noise Density: 90 nV/sqrt Hz Supply Voltage Range: ±5V ~ ±18V Operating Supply Current: 600uA Operating Temperature Range: 0°C ~ +70°C Shutdown: No Shutdown Dual Supply Voltage: ±15V Input Voltage Range: 10V Power Dissipation: 500 mW (1/2 W) Power Supply Rejection Ratio: 90dB Voltage Gain dB: 120dB Mounting Style: Through Hole Package/Case: TO-8 Package Includes:- 1 x AD549 Ultra low Input Bias Current Operational Amplifier TO-8 Package