LF412ACN/NOPB

Current - Input Bias:	50pA
Base Part Number:	LF412
Supplier Device Package:	8-PDIP
Package / Case:	8-DIP (0.300", 7.62mm)
Mounting Type:	Through Hole
Operating Temperature:	0°C ~ 70°C
Voltage - Supply, Single/Dual (±):	10 V ~ 44 V, ±5 V ~ 22 V
Current - Supply:	3.6mA
Voltage - Input Offset:	500µV
Series:	BI-FET II™
Gain Bandwidth Product:	4MHz
Slew Rate:	15 V/µs
Output Type:	--
Number of Circuits:	2
Amplifier Type:	J-FET
Part Status:	Active
Packaging:	Tube

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LF412ACN/NOPB Application Field and Working Principle The LF412ACN/NOPB is a high-performance operational amplifier (op amp) from Texas Instruments, suitable for general-purpose applications. It allows for a high slew rate, low noise, and wide bandwidth, with a design goal to provide stable and predictable operation at lower power consumption than traditional op amps. The LF412ACN/NOPB is a dual high-voltage, high-performance, low-power CMOS operational amplifier in the wide-package (SN74LV412A) and narrow-package (SN74V412A) versions. The LF412ACN/NOPB has a variable gain control and an output stage with an active pull-up that is adjustable with an external resistor. Application Field The LF412ACN/NOPB is a versatile general-purpose op amp suitable for a variety of applications. Driving higher capacitance loads (up to 3 nF) is one of its salient features which makes it suitable for driving capacitively loaded voltage to current converters. Additionally, the LF412ACN/NOPB can be used in instrumentation and process control circuits. The LF412ACN/NOPB can also be used for precision buffering, analog line receivers and drives, audio pre-amplifiers, and video switch drivers or gain stages. The unit is suitable for precision summing amplifiers, low-speed data acquisition, video signal processing, and high frequency control. Working Principle The LF412ACN/NOPB works on the basic premise of comparing two input voltages and creating an output signal with an amplitude and polarity that is proportional to the differences between the two inputs. It does this by using a differential amplifier, which is a voltage-controlled amplifier whose output voltage is proportional to the difference between its two inputs. The differential amplifier has two input terminals and one output; however, the LF412ACN/NOPB can also include additional circuitry for gain, offset, and filtering. The LF412ACN/NOPB differential amplifier consists of three stages. The first is a high-impedance input stage, which allows the amplifier to be sensitive to very small variations in the input voltage. This stage can be operated in either an inverting configuration (with a negative feedback) or a non-inverting configuration (with a positive feedback). The second stage is a differential amplifier. It amplifies the small differences between the two inputs, producing an amplified output signal that is proportional to their difference. The final stage is a current-limiting amplifier, which ensures that the output signal does not exceed the voltage of the power supply. The LF412ACN/NOPB op amp is designed to provide excellent accuracy, reliability, and repeatability over a wide temperature range and is rated to operate from −40°C to +125°C. The unit also offers excellent input and output characteristics, including low noise and low offset voltage. Additionally, the LF412ACN/NOPB has a high gain bandwidth product, making it suitable for high frequency applications. In conclusion, the LF412ACN/NOPB is a versatile high-voltage, high-performance, low-power CMOS operational amplifier from Texas Instruments. It is suitable for general-purpose applications such as instrumentation and process control, precision buffering, analog line receivers and drives, audio pre-amplifiers, video switch drivers or gain stages, precision summing amplifiers, low-speed data acquisition, video signal processing, and high frequency control. The LF412ACN/NOPB is designed to provide excellent accuracy, reliability, and repeatability over a wide temperature range and is rated to operate from −40°C to +125°C. It features a differential amplifier with an input stage, a differential amplifier stage, and a current-limiting amplifier stage.

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