LT1124IS8#PBF

Current - Input Bias:	8nA
Base Part Number:	LT1124
Supplier Device Package:	8-SO
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply, Single/Dual (±):	±4 V ~ 18 V
Current - Supply:	2.3mA
Voltage - Input Offset:	25µV
Series:	--
Gain Bandwidth Product:	12.5MHz
Slew Rate:	4.5 V/µs
Output Type:	--
Number of Circuits:	2
Amplifier Type:	General Purpose
Part Status:	Active
Packaging:	Tube

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LT1124IS8#PBF Application Field and Working Principle

Introduction

LT1124IS8#PBF is a low power single supply, wide bandwidth operational amplifier (op-amp) which is suitable for applications such as instrumentation, buffering and signal conditioning. This op-amp contains a high performance voltage follower and a high-speed differential-input amplifier stage. It offers a very low power consumption of 2.4 milliwatts and features an input common-mode range which includes ground and an output voltage swing of 0.5V to power supply.

Applications

Linear amplifiers featuring the LT1124IS8#PBF op-amp can find a wide range of applications, particularly in instrumentation and buffering amps. Instrumentation applications which make use of the LT1124IS8#PBF include current sensing and voltage sensing, as well as data converters. It is also suitable for measuring remote switches and monitoring high impedance sources. Buffering amps featuring the LT1124IS8#PBF can achieve precision gain amplification and multiplexing systems.It is also suitable for signal conditioning applications due to its exceptionally low power consumption and wide input common-mode range (which includes ground). It has high-speed, high gain and excellent common-mode rejection ratio (CMRR). This makes it suitable for high frequency and high accuracy signal processing applications.

Working Principle

The LT1124IS8#PBF is a low power, single supply wide band operational amplifier with a high speed differential-input amplifier stage and a voltage follower. The differential-input amplifier works on a common - mode signal applied to the non-inverting and inverting terminals. This signal is amplified by an internal gain of 94dB and is then applied to the output stage. The output stage amplifies the signal further and provides an amplified signal at the output terminal. The output stage also feeds back a signal to the differential-input amplifier. The voltage follower of the LT1124IS8#PBF is a unity gain amplifier with a low output impedance and low input offset voltage. The voltage follower is designed to reduce the loading effect of the output stage and improve the frequency response. This increases the signal-to-noise ratio of the device.

Conclusion

The LT1124IS8#PBF is a low power, single-supply wide bandwidth operational amplifier suitable for instrumentation, buffering and signal conditioning applications. It offers a very low power consumption and features a high input common-mode range and a wide output voltage swing. The LT1124IS8#PBF also features low output impedance, low input offset voltage, high gain and excellent CMRR. These features make it an attractive choice for applications such as current sensing, voltage sensing, data converters and high frequency signal conditioning systems.

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