LT1122DCN8

Part Status:	Active
Amplifier Type:	J-FET
Number of Circuits:	1
Output Type:	--
Slew Rate:	75 V/µs
Gain Bandwidth Product:	13MHz
Current - Input Bias:	12pA
Voltage - Input Offset:	130µV
Current - Supply:	7.8mA
Voltage - Supply, Single/Dual (±):	±5 V ~ 18 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Through Hole
Package / Case:	8-DIP (0.300", 7.62mm)
Supplier Device Package:	8-PDIP
Base Part Number:	LT1122
Series:	--
Packaging:	Tube

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LT1122DCN8 Application Field and Working Principle

The LT1122DCN8 is a high performance monolithic, single supply, wide bandwidth, and high transient current amplifier. Designed by Linear Technology, it is a fast and versatile companion for power supplies and voltage regulators, which provides high input impedance, low output impedance and high current drive capability, allowing a wide range of applications in different fields.

Fields of Application

The common application fields of the LT1122DCN8 include industrial, medical, military and aerospace, audio, video, communication, and automotive systems, as well as other instrumentation and automation control systems.In medical systems, it is used for pulse generators and EKG amplifiers. In industrial, automotive, and other control systems, it is used for servo amplifiers, motor control, current loops, and circuit isolation. In military and aerospace, it is used for high dynamic range amplifiers and controllers, temperature and pressure sensor amplifiers and power supply isolation amplifiers.In communication systems, it is used in microphone and speaker amplifiers, line receivers, power management amplifiers, and RF amplifiers. In audio and video systems, it is used in line receivers, audio amplifiers, video amplifiers, and stereo systems.

Working Principle

The LT1122DCN8 operates by passing a differential voltage through two pairs of matched JFETs to amplify the input voltage, while the output is bipolar and the gain is controlled by a single resistor. Its 12.5mA bipolar current output is designed to drive loads of up to 20V, and has a guaranteed square wave response of 20Vp-p with a slew rate of 4.5V/µs. Furthermore, it also has a wide voltage range of 5V to 18V, which makes it ideal for many different application fields.The amplifier also exhibits excellent RF performance, with unity gain frequency of 220 MHz and total gain flatness of 0.1dB up to 200MHz, making it a great choice for high speed communication systems.

Conclusion

The LT1122DCN8 is a high performance amplifier that provides a wide range of application possibilities. With its excellent RF performance and wide operating voltage range, it is a great choice for many different fields, from industrial and automotive control systems to communications, audio and video. Its fast slew rate and high current output make it a versatile amplifier that is sure to be a useful tool in any project.

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