ICL7642ECWE

Current - Input Bias:	1pA
Base Part Number:	ICL7642
Supplier Device Package:	16-SOIC
Package / Case:	16-SOIC (0.295", 7.50mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C
Voltage - Supply, Single/Dual (±):	2 V ~ 16 V, ±1 V ~ 8 V
Current - Supply:	10µA
Voltage - Input Offset:	20mV
Series:	--
Gain Bandwidth Product:	44kHz
Slew Rate:	0.016 V/µs
Output Type:	Rail-to-Rail
Number of Circuits:	4
Amplifier Type:	General Purpose
Part Status:	Active
Packaging:	Tube

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Introduction

The ICL7642ECWE is a general-purpose instrumentation amplifier that features high performance and low distortion. The ICL7642ECWE is a low-power, single-supply amplifier that operates from a 2.7V to 5.5V supply. The ICL7642ECWE is ideal for use in a variety of applications, including biomedical instrumentation, test and measurement, and high precision audio.

Application Field and Working Principle

The ICL7642ECWE’s main application field resides in linear amplifiers, instrumentation, operational amplifiers, buffer amplifiers, and their related segments. Within these fields, the ICL7642ECWE can be used as a low-noise, high accuracy front end of a signal chain and is an ideal choice for applications such as low-level data acquisition systems, low-frequency instrumentation amplifiers, linear pre-amplifiers, and low-level DC differential amplifiers.The ICL7642ECWE utilizes a technique called ‘chopping’, which eliminates the need for any external components, reducing the part count and consequently minimizing size and cost. The ICL7642ECWE also has excellent common-mode rejection and a high input impedance and low output impedance, making it suitable for use in a variety of applications including audio, video, and medical instrumentation.The ICL7642ECWE features a high input-voltage range of up to 11V, making it suitable for use in single supply and dual supply applications. In addition, the ICL7642ECWE is capable of operating with a high supply-current efficiency, allowing for low power consumption under all operating conditions.The ICL7642ECWE is designed to operate with a low quiescent current, reducing power consumption and extending battery life. The ICL7642ECWE is available in a wide variety of package types and offers ±2V, ±5V and ±15V single or dual supply operation.The ICL7642ECWE’s internal circuitry includes differential inputs, one or two stages of amplification (depending on the model), and a low-distortion buffer amplifier. The differential inputs are buffered by a single amplifier, preserving the amplifier\'s high input impedance. The amplifier’s output is then buffered by a low-distortion buffer amplifier, which produces a flat output response even when driving large capacitive loads.The ICL7642ECWE also features on-chip frequency compensation, which makes it easy to use in applications requiring variable gain and bandwidth. The frequency compensation can be adjusted with external components to achieve different gain and bandwidth configurations.

Conclusion

The ICL7642ECWE is a high-performance, low-distortion, low-noise amplifier ideal for applications in linear systems, instrumentation, operational amplifiers, buffer amplifiers, and related fields. The ICL7642ECWE is capable of operating with a wide input-voltage range, supplying a high-supply current efficiency for low power consumption and extended battery life. The ICL7642ECWE includes on-chip frequency compensation for applications requiring variable gain and bandwidth, making it a versatile and cost-effective solution for any signal processing application.

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