HFA1145IB

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Applications:	Current Feedback
Output Type:	--
Number of Circuits:	1
-3db Bandwidth:	330MHz
Slew Rate:	2100 V/µs
Current - Supply:	5.8mA
Current - Output / Channel:	60mA
Voltage - Supply, Single/Dual (±):	9 V ~ 11 V, ±4.5 V ~ 5.5 V
Mounting Type:	Surface Mount
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOIC
Base Part Number:	HFA1145

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HFA1145IB Application Field and Working Principle

The HFA1145IB Linear Amplifier/Video Amp module is a high-performance, low-power amplifier that is suited for many applications, including video signal applications. This versatile integrated circuit (IC) combines linear-amplifying and video-amplifying features and can be applied to both audio and video signal amplification. It is particularly useful for video applications because it provides the necessary voltage gain and current sink to drive the signal from the video source to the video output.

Application Field

The HFA1145IB Linear Amplifier/Video Amp module is ideal for a variety of applications, such as video signal amplifiers, analog switching relays, acoustic/voice signal amplifiers, optical/infrared detectors, and other devices. It is also suitable for industrial and consumer applications. It is most commonly used in sound-barrier systems, sound-field simulator systems, audio-visual systems, noise-measuring systems, medical equipment, and various other audio and video-related applications. The amplifier ensures an ideal signal condition while providing noise-free amplification and high linearity in the signal chain.

Working Principle

The HFA1145IB Linear Amplifier/Video Amp module incorporate a novel linear-amplifying technique, wherein the input signal is pre-amp signal, which is amplified by the main amplifier for a high quality signal. This signal is then filtered through the low-pass filter in order to remove any unwanted high frequency content. The output stage is a video amplifier consisting of a current-feedback feedback operational amplifying topology, providing a pure and linear output signal, perfectly proportionate to the input. The HFA1145IB Linear Amplifier/Video Amp module provides low distortion, low noise, and excellent linearity. Additionally, an adjustable bandwidth, low group-delay spread, and low power-supply voltage make it ideal for a variety of applications. The device is capable of providing a wide range of output power, ranging from 0.25W to 2W, making it suitable for both low- and medium-power applications. The module also provides bypassable operational amplifiers that allow for the implementation of multiple-gaining stages. The Gain Bandwidth product (GBWP) and unity-gain bandwidth of the HFA1145IB are suitalble for a wide range of applications, as it is ideal for applications that require low-frequency bandwidth. Additionally, the low input-signal range, low distortion, and low consumer power makes it an ideal choice for use in noise-demanding applications. Overall, the HFA1145IB Linear Amplifier/Video Amp module provides a good balance between performance and cost. As such, it should be considered for a variety of applications, such as video signal amplifiers, acoustic/voice signal amplifiers, optical/infrared detectors, and other devices.

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