HCPL-7851

Series:	--
Packaging:	Tube
Part Status:	Active
Amplifier Type:	Isolation
Number of Circuits:	1
Output Type:	Differential
Slew Rate:	--
-3db Bandwidth:	100kHz
Current - Input Bias:	570nA
Voltage - Input Offset:	600µV
Current - Supply:	10.7mA
Current - Output / Channel:	11mA
Voltage - Supply, Single/Dual (±):	4.5 V ~ 5.5 V
Operating Temperature:	-55°C ~ 125°C
Mounting Type:	Through Hole
Package / Case:	8-DIP (0.300", 7.62mm)
Supplier Device Package:	8-DIP
Base Part Number:	HCPL-7851

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HCPL-7851 Application Field and Working Principle

The HCPL-7851 is a differential amplifier designed with a high performance and high-frequency. It is employed in variety of linear as well as instrumentation applications, such as op amps, buffers and power supply voltage regulation.This high-performance differential amplifier has two primary advantages when used in instrumentation applications. Its superior linearity and wide frequency response make it a great solution for amplifying signals from low-bandwidth systems. The HCPL-7851 can also provide frequency responses of up to 50MHz, which is ideal for applications involving high-frequency signal processing.The HCPL-7851 is available in a number of different packages and configurations. The DIP package model is the most common and is suitable for use in both linear and instrumentation applications. The SMD package is a smaller model that is suitable for use in space-constrained conditions. The BNC package is used mainly in laboratory settings, while the dual-package is suitable for use in low power applications.The HCPL-7851 is typically used in circuit boards as a basic buffer and amplifier. This allows the device to be placed close to where the signal is being generated, and provides a buffer, amplifier, and isolation between the source and the destination. This reduces noise and improves signal integrity, which is essential for accurate measurements.At its simplest level, the HCPL-7851 is made up of two differential input transistors, a cascode, and an output stage. The transistors act as a buffer, taking the input signal, isolating it from external noise and transferring it to the cascode. The cascode then amplifies the signal, which is then sent to the output stage. This output stage drives the output signal to the load, which can be either a passive load such as a resistor, or an active load, such as an op-amp.The HCPL-7851 also features a high common-mode rejection ratio (CMRR). This allows it to reject any out of range signals or signals with too much noise. This ensures that the input signal is amplified only when it is within the desired range, and is free of any interference.In conclusion, the HCPL-7851 is a great choice for use in instrumentation applications, due to its wide frequency range, and its high CMRR. Its small size makes it ideal for applications in space-constrained conditions, and its performance makes it suitable for amplifying signals from low-bandwidth systems. With its ease of use, reliability, and performance, it is an ideal amplifier for a variety of linear as well as instrumentation applications.

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