KA334

Voltage - Input Offset:	15mV
Base Part Number:	KA334
Supplier Device Package:	8-DIP
Package / Case:	8-DIP (0.300", 7.62mm)
Mounting Type:	Through Hole
Operating Temperature:	-25°C ~ 85°C
Voltage - Supply, Single/Dual (±):	4 V ~ 28 V, ±2 V ~ 14 V
Current - Output / Channel:	700mA
Current - Supply:	8mA
Series:	--
Current - Input Bias:	300nA
Gain Bandwidth Product:	350kHz
Slew Rate:	1 V/µs
Output Type:	--
Number of Circuits:	2
Amplifier Type:	General Purpose
Part Status:	Obsolete
Packaging:	Tube

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Introduction

The KA334 instrumentation Amplifier is a three-terminal differential amplifier that can be used as a low-impedance linear amplifier, an impedance buffer, or an active filter. It is a versatile instrumentation amplifier that offers exceptional bandwidth, gain accuracy, and common-mode rejection ratio. This document will discuss the application field and the working principle of the KA334 instrumentation amplifier.

Application Field

The KA334 is a versatile instrumentation amplifier that is well-suited for a wide range of applications. One of the main uses of the KA334 is to amplify small signals. Due to its low input impedance and high common-mode rejection ratio, it can effectively amplify signals in noisy environments. It is frequently used in precision data acquisition systems and medical instruments, such as ECG monitors, where accurate and quiet signal measurements are critical.The KA334 also enables accurate amplification of signals over long distances. Its low input impedance allows it to reduce electrostatic pick-up when signals are transmitted over long distances. As a result, the KA334 is often used in instrumentation systems in factories and laboratories, where signals must be transmitted over considerable distances.In addition, the KA334 can also be used as a buffer amplifier. Its high output impedance allows it to drive loads without introducing distortion, making it ideal for driving ADC converters or DAC converters in data acquisition systems.

Working Principle

The KA334 is a three-terminal differential amplifier based on a fully differential operational amplifier (op-amp). The op-amp is configured in a feedback topology with two external resistors that set the gain of the amplifier.The input of the amplifier is applied to the non-inverting (positive) and the inverting (negative) inputs of the op-amp. The non-inverting input is connected to the inverting input through two resistors, R1 and R2. When a voltage is applied to the inputs, the op-amp amplifies the difference between the voltages to generate an output. The ratio of the two resistors determines the gain of the amplifier.The KA334 also has a high common-mode rejection ratio (CMRR). This is due to the differential design of the amplifier, where the common-mode voltages (the voltages that appear at both the inputs) are rejected. As a result, any noise or interference signals that are common to both the inputs are rejected, ensuring high accuracy of the amplifier\'s output.

Conclusion

The KA334 is a versatile instrumentation amplifier that offers exceptional bandwidth, gain accuracy, and common-mode rejection ratio. It can be used as a low-impedance linear amplifier, an impedance buffer, or an active filter. It can be used in precision data acquisition systems and medical instruments, as well as in instrumentation systems in factories and laboratories. The KA334 is based on a fully differential operational amplifier and its gain is determined by two external resistors. It also has a high common-mode rejection ratio, which ensures high accuracy of the amplifier\'s output.

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