OA1NP22C Integrated Circuits (ICs)

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Amplifier Type:	CMOS
Number of Circuits:	1
Output Type:	Rail-to-Rail
Slew Rate:	3 V/ms
Gain Bandwidth Product:	9kHz
Current - Input Bias:	1pA
Voltage - Input Offset:	100µV
Current - Supply:	650nA
Current - Output / Channel:	11mA
Voltage - Supply, Single/Dual (±):	1.5 V ~ 5.5 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	5-TSSOP, SC-70-5, SOT-353
Supplier Device Package:	SC-70-5

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Introduction

OA1NP22C is a general purpose operational amplifier suitable for high frequency applications in the fields of linear amplifiers, instrumentation, operational amplifiers (OP Amps), and buffer amplifiers. It has found wide applications in industrial, consumer, and medical products design. The main features of OA1NP22C are low input offset voltage, wide voltage range, high slew rate, frequency compensation and output current drive capability.

Application Field

OA1NP22C can be widely used in analog circuits design. For example, it is widely adopted in linear amplifiers, instrumentation amplifiers, OP Amps, buffer amplifiers and other high frequency applications. Linear amplifiers using OA1NP22C is especially suitable for radio frequency and audio frequency amplifications (RFA/AFA). It can provide high frequency (up to 20MHz) amplification with low noise, great linearity and low distortion characteristics. Moreover, OA1NP22C has many advantages for instrumentation amplifiers including programmable gain, current feedback, high common mode rejection ratio, static accuracy, and low noise. Another most common application of OA1NP22C is for the design of operational amplifiers, in which it is suitable for designs requiring wide bandwidth and high slew rate. OA1NP22C also has unique features for buffer amplifier design that provides fast response, excellent stability and low power consumption.

Working Principle

The basic working principle of OA1NP22C can be divided in 3 distinct stages：1. Cascode Stage: A cascode circuit is used to provide high voltage gain which is a requirement in amplifier designs. It ensures that the output voltage, regardless of gain, is of the same levels as input and also provides wide band frequency response.2. Gain and Frequency Compensation: This stage is designed to maintain high gain and stability over the frequencies within the operating range. OA1NP22C uses a trans-impedance amplifier circuit to provide these features. A current-feedback amplifier is auto-compensated for voltage noise rejection, which also helps in reducing distortion.3. Output Stage: This stage is designed to drive the load connected to it. The output stage consists of an output impedance and an open loop amplifier, both of which are specifically tailored to the load. Therefore, the output stages match the load impedance and the feedback resistance of the amplifying circuit so as to provide a specified level of output power.

Conclusion

The OA1NP22C is one of the most versatile and widely used operational amplifiers available today and is especially suitable for high frequency linear amplifiers, instrumentation amplifiers, operational amplifiers and buffer amplifiers applications. Its main features include low input offset voltage, wide voltage range, and high slew rate drive capability which makes it more reliable and efficient in these fields. It also comes with an integrated circuit which is designed to provide high gain and stability over the frequencies within the operating range. In addition, its output stage is designed to drive the load connected to it with good matching of the output impedance and feedback resistance of the amplifying circuit. Therefore, OA1NP22C can be used for a wide range of applications in the fields of linear amplifiers, instrumentation, OP Amps and buffer amplifiers.

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