MC34071AD

Voltage - Input Offset:	500µV
Base Part Number:	MC34071A
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C
Voltage - Supply, Single/Dual (±):	3 V ~ 44 V, ±1.5 V ~ 22 V
Current - Output / Channel:	30mA
Current - Supply:	1.9mA
Series:	--
Current - Input Bias:	100nA
Gain Bandwidth Product:	4.5MHz
Slew Rate:	13 V/µs
Output Type:	--
Number of Circuits:	1
Amplifier Type:	General Purpose
Part Status:	Obsolete
Packaging:	Tube

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MC34071AD Application Field and Working Principle

Introduction

The MC34071AD is a high-performance, low cost, single operational amplifier with wide bandwidth and high slew rate in a tiny 8-pin plastic DIP package. Its operating range is from 5V to 15V and its sharp cut-off frequency is three times higher than comparable amplifiers in low voltage designs. It also offers superb CMRR and PSRR performance and a low output impedance. Moreover, its input-to-output differential voltage is no more than 5V, which makes the device suitable for modest power supplies. With its excellent various characteristics, the MC34071AD is widely used in general-purpose industrial, medical, instrumentation and automotive applications.

Application Field

Industrial application field

The MC34071AD is mainly used in industrial process control systems and laboratory instrumentation, such as industrial furnace temperature controllers, production line controllers, injection molding machine adjusters and precision force measuring instruments.The MC34071AD has an adjustable high-input-impedance feature, making it ideal for a wide variety of industrial applications. Its wide bandwidth and high speed response enables measurement of small changes over a wide range of input signals, providing accuracy and stability regardless of the environment or process\'s conditions. The MC34071AD can also be applied for monitoring and controlling normal as well as low-power circuits.

Medical application field

The MC34071AD is widely adopted in medical equipment, such as surgical instruments and imaging science technologies.Utilizing its high speed, wide bandwidth, and superb CMRR and PSRR performance, the MC34071AD can accurately measure and monitor delicate signals, such as electrocardiograms, neurological recordings and magnetic resonant imaging (MRI) scanners.

Instrumentation and Automotive application field

The MC34071AD is widely applied in various instrumentation and automotive applications, such as car entertainment systems, home theater systems, electronic fuel injection systems and vibration measurement systems.In instrumentation applications, the MC34071AD provides superior accuracy. Its wide input voltage and frequency range, low input-to-output differential voltage and high slew rate enable precise measurement and processing of signals.In automotive applications, the MC34071AD offers high-bandwidth performance, low power consumption and low input-bias current, making it especially suitable for fuel injection control systems.

Working Principle

The MC34071AD is an operational amplifier (opamp) device with a dual input configuration. It operates a wide input voltage range and supports both voltage and current inputs and outputs.At its core, it consists of three main components: an input amplifier and a comparer. The input amplifier amplifies the weak signal input and converts it into a digital signal. The comparer then compares the amplified digital signal with the reference digital signal to determine the output signal level.Additionally, the MC34071AD is designed with a very low noise level, meaning that signals can be detected and amplified with minimal interference. The device also features an adjustable gain and a wide bandwidth, enabling detection and amplification of signals across a wide range of frequencies.To support the low voltage applications, the MC34071AD includes a charge pump for generating a negative supply voltage. This reduces the power consumption and helps to maintain proper operation even at low voltages.

Conclusion

The MC34071AD is a high-performance and low cost single operational amplifier with an adjustable gain and wide bandwidth and slew rate. With its excellent performance, its maximum possible applications include industrial, medical and instrumentation and automotive applications.In addition to its superior performance, the device offers a wide input voltage range and low input-to-output differential voltage that make it ideal for low voltage designs. It also offers a very low noise level and adjustable high-input-impedance feature that make it suitable for various industrial applications.All in all, the MC34071AD provides impressive overall performance that makes it attractive for use in a variety of industrial, medical, instrumentation and automotive applications.

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