Current - Input Bias:	50pA
Base Part Number:	LF347
Supplier Device Package:	14-SOIC
Package / Case:	14-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C
Voltage - Supply, Single/Dual (±):	7 V ~ 36 V, ±3.5 V ~ 18 V
Current - Supply:	8mA
Voltage - Input Offset:	5mV
Series:	--
Gain Bandwidth Product:	3MHz
Slew Rate:	13 V/µs
Output Type:	--
Number of Circuits:	4
Amplifier Type:	J-FET
Part Status:	Active
Packaging:	Tube

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LF347DG4 application field and working principle

Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

The ultra-low power, low-voltage LF347DG4 is a single-supply integrated circuit general purpose operational amplifier suitable for use in a variety of applications. It is designed to turn low-level AC and DC voltage signals into larger output signals. It provides a wide range of gain, low noise, and fast settling time, making it an ideal choice for many types of instrumentation amplifiers. The device is also useful for applications such as data acquisition and control such as analog-to-digital converters and digital-to-analog converters. The LF347DG4 is a quad single-ended buffered amplifier featuring high input impedance, low output impedance, and low power consumption. This device is capable of operating over a wide range of input voltage and frequency ranges. It offers low quiescent current, high precision and low-drift properties thereby ensuring dependable performance. The device is specified for operation over the -40°C to +125°C range of temperatures. The device also has a wide voltage supply range of 4V to 36V. The LF347DG4’s key features include low power consumption, low noise, high precision, high speed, wide temperature range, and wide voltage supply range. Additionally, the device features a user-defined gain, high open loop gain, large slew rates, high-precision offset adjustment, auto-zero, and low-impedance outputs.In operation, the LF347DG4 amplifies inputs through a four-stage process. The first stage is the open loop gain stage. In this stage, the input signal is amplified and sent to the next stage. The second stage is the auto-zero stage, in which the device adjusts the gain so that the output is equal to the unmodulated input. The third stage is the closed-loop gain stage where the amplified signal is combined with the unmodified signal to produce a gain of user-defined or closed-loop gain. The fourth stage is the output buffer stage, where the amplified input is buffered for transmission with a low-impedance output.The LF347DG4 is ideal for applications such as data acquisition, medical instrumentation, digital signal processing, differential open-loop amplifiers, switching linear amplifiers, active filters, and audio systems. The device also offers stability and reliability with its wide temperature range, low quiescent current, and low-drift properties. It is a great choice for applications requiring low-voltage and low-power operation, such as portable electronics and small battery-powered systems.Overall, the LF347DG4 is a perfect choice for applications needing low-power, low-voltage operation, high precision and fast settling time. Its four-stage process allows it to deliver stable and reliable results, making it an ideal choice for low-to-medium gain-precision applications. The device is also reliable and robust in its temperature range of -40°C to +125°C, allowing it to be used in harsh environments. As such, the LF347DG4 is a great choice for many instrumentation amplifiers, data acquisition and control, and active filters.

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