LT1804CS8#TRPBF

Voltage - Input Offset:	1.5mV
Base Part Number:	LT1804
Supplier Device Package:	8-SO
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C
Voltage - Supply, Single/Dual (±):	2.3 V ~ 12.6 V, ±1.15 V ~ 6.3 V
Current - Output / Channel:	50mA
Current - Supply:	2.5mA
Series:	--
Current - Input Bias:	2.5µA
Gain Bandwidth Product:	83MHz
Slew Rate:	88 V/µs
Output Type:	Rail-to-Rail
Number of Circuits:	2
Amplifier Type:	General Purpose
Part Status:	Active
Packaging:	Tape & Reel (TR)

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LT1804CS8#TRPBF Application Field and Working Principle

Introduction

LT1804CS8#TRPBF is a high performance dual low-noise operational amplifier designed for applications such as line receivers, instrumentation amplifiers, microphone pre-amps, and precision audio electronics. It was released by Linear Technology Corp and is categorized as a type of instrumentation, OP amp, or buffer amplifier. This application field and working principle of the LT1804CS8#TRPBF will be discussed in the subsequent sections.

Application Field

Instrumentation amplifiers are used in applications such as medical equipment, strain gages, and pressure transducers, to sense and convert signals. This amplifier is suitable for these applications due to its wide open-loop gain and high dynamic-range. Additionally, the LT1804CS8#TRPBF has a low-noise of 150 nVp-p and an input bias of 1.5 μV/V. It is capable of driving capacitive loads up to 10,000 pF with no oscillation and is power efficient, therefore suitable for battery-powered systems. The LT1804CS8#TRPBF can be used as a preamplifier for a wide variety of applications such as line receivers, microphone preamps, and audio electronics. This is because it has an impressive low-noise performance of 3 nV√Hz. It has a high resolution output and a slew rate of 500 V/μs, therefore it is suitable for driving higher-resolution ADCs.

Working Principle

The LT1804CS8#TRPBF is a dual low-noise operational amplifier. In operation, the device has two amplifying inputs with a selectable output configuration. When the selectable output is activated, the output voltage is increased to the positive supply voltage and the negative supply voltage. This device has two gain setting inputs, gain and unity gain, each of which is selectable depending on the application. The unity gain acts as a buffer, providing a voltage gain of unity, while the gain is used to increase the gain of the amplifier. The LT1804CS8#TRPBF is designed for use in high-voltage applications and offers a variety of power supply protection features. It has an over-voltage protection circuit that protects the input from high-voltage transient events. Additionally, it has both over-current and thermal protection to ensure that it won’t suffer any damage due to current or temperature overloads. It is important to note that the LT1804CS8#TRPBF is not intended to be used as a voltage follower and can only be used with positive and negative voltages up to the power supply limits. It also cannot be used to drive capacitive loads greater than 10,000pF and should not be used to drive loads greater than 3mA.

Conclusion

The LT1804CS8#TRPBF is a dual low-noise operational amplifier. It was designed for linear applications such as line receivers, instrumentation amplifiers, microphone preamps, and precision audio electronics due to its impressive low-noise performance of 3 nV√Hz. It has two gain setting inputs, gain and unity gain, and is designed for driving capacitive loads up to 10,000pF with no oscillation. It also has a variety of power supply protection features to ensure that it won’t suffer any damage due to current or temperature overloads.

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