LT1028CSW#TRPBF

Current - Input Bias:	30nA
Base Part Number:	LT1028
Supplier Device Package:	16-SO
Package / Case:	16-SOIC (0.295", 7.50mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C
Voltage - Supply, Single/Dual (±):	±4 V ~ 18 V
Current - Supply:	7.6mA
Voltage - Input Offset:	20µV
Series:	--
Gain Bandwidth Product:	75MHz
Slew Rate:	15 V/µs
Output Type:	--
Number of Circuits:	1
Amplifier Type:	General Purpose
Part Status:	Active
Packaging:	Tape & Reel (TR)

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LT1028CSW#TRPBF is a current feedback operational amplifier manufactured by Linear Technology Corporation. It is primarily intended for use in instrumentation and electronic test equipment. The LT1028CSW#TRPBF provides an excellent solution for applications requiring high bandwidth, low offset voltage, and low power consumption in a wide variety of instruments.This article provides an overview of the LT1028CSW#TRPBF, its application field and working principle.DescriptionThe LT1028CSW#TRPBF is a low noise, low power, high bandwidth current feedback operational amplifier that provides outstanding performance in a wide range of instrumentation and test equipment applications. It features an 8 pin DIP package, a 5V single supply operation and high speed performance up to 200 MHz. The LT1028CSW#TRPBF also offers excellent input common mode range and a wide operating temperature range of – 40 to + 85 °C.The LT1028CSW#TRPBF is designed to operate in the standard wide frequency range of 1.5Hz to 20kHz, with a -3dB bandwidth of 200MHz and is capable of supplying a low offset voltage of 200uV. It also offers extremely low 1.3nV/vHz noise, with 1mA input bias current and 2.5mA input offset current. The bias currents remain stable over both temperature and supply voltage variations, making it suitable for use in combination with high input impedance components such as capacitors and transistor pairs.ApplicationsThe LT1028CSW#TRPBF is suitable for use in a wide variety of instrumentation and test equipment applications. Some of the most common applications for this component include:● Audio amplifiersThe LT1028CSW#TRPBF can be used as a power amplifier for audio applications. It offers very low distortion levels, high linearity and low input offset voltage, making it ideal for use in audio amplifiers.● Video amplifiersThe component\'s low noise and high bandwidth are ideal for use in video amplifiers, providing excellent performance when amplifying high frequency signals.● Measurement and monitoring instrumentsSince the component offers extremely low noise and low current draw, it is ideal for use in measurement and monitoring equipment, allowing accurate and reliable measurements to be taken.● Medical equipmentThe LT1028CSW#TRPBF is well-suited for medical instruments and can be used in a wide range of medical applications, such as heart rate monitors, ECG (electrocardiogram) machines, and blood pressure monitors.Working PrincipleThe LT1028CSW#TRPBF is a current feedback operational amplifier that uses a transimpedance amplifier (TIA) topology to enable high frequency operation and excellent linearity. The current feedback design allows for high speed, low offset voltage and low power consumption.The amplifier consists of an internal voltage feedback loop, which is made up of an input stage, a gain stage, a feedback network and an output buffer. The input stage comprises of two differential NMOS transistors that act as the input transistors. The gain stage consists of an internal bipolar amplifier which increases the amount of current through the outputs.The feedback network is where the current feedback design comes into play. It draws current from the outputs, performs the current to voltage conversion and returns voltage to the inputs. The output buffer consists of a class A and a class B emitter follower stage. This ensures that the output impedance is low, while maintaining a high bandwidth and fast transient response.ConclusionThe LT1028CSW#TRPBF is a current feedback operational amplifier that provides excellent performance in a wide range of instrumentation and test equipment applications. It features low power consumption, high bandwidth and low offset voltage, along with a wide operating temperature range, making it an excellent solution for applications requiring high performance. The amplifier is also well-suited for audio, video and medical applications, and its low noise and low bias current make it ideal for use in combination with high input impedance components.

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