BU7481SG-TR

Voltage - Input Offset:	1mV
Base Part Number:	BU7481
Supplier Device Package:	5-SSOP
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 105°C
Voltage - Supply, Single/Dual (±):	1.8 V ~ 5.5 V, ±0.9 V ~ 2.75 V
Current - Output / Channel:	16mA
Current - Supply:	420µA
Series:	--
Current - Input Bias:	1pA
Gain Bandwidth Product:	2.8MHz
Slew Rate:	3.2 V/µs
Output Type:	--
Number of Circuits:	1
Amplifier Type:	General Purpose
Part Status:	Active
Packaging:	Tape & Reel (TR)

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BU7481SG-TR Application Field and Working Principle BU7481SG-TR is a quad operational amplifier (op-amp) of the instrumentation, OP amps, buffer amps linear amplifier family. This product is particularly known for its low noise and low-power characteristics, making it useful for a wide range of applications. In this article, we will discuss the application field and working principle of the BU7481SG-TR. The BU7481SG-TR is an ideal amplifier for applications that require a low noise and low-power signal conditioner. It is designed to work with a wide range of signal sources including low-level signals such as thermocouples and bio-probes, as well as with higher-power signals such as voltage or current sources. It can also be used for audio applications such as pre-amplification of sound recording equipment since it has a high common-mode rejection ratio (CMRR). The BU7481SG-TR features a power supply voltage range of 2.6 – 5.5 V and has a wide gain bandwidth of 560 kHz. It has a low supply current of 1.6 mA/amp and reduces noise to as low as 7 nV/√ Hz at 0.1 – 10 Hz. This makes it suitable for low noise operation over a wide range of applications. The quiescent current of the op-amp is 0.35 mA, which reduces power consumption and increases battery life. In terms of its working principle, the BU7481SG-TR is basically a four-transistor differential amplifier. It operates on the basic principles of an operational amplifier: providing a high input impedance, low output impedance and good common-mode rejection. A differential amplifier is used to amplify the difference between two input signals. The two inputs, usually referred to as the “non-inverting” and “inverting” inputs, are first difference-amplified by the two transistors and then further amplified by the other two transistors. The BU7481SG-TR’s input common-mode range is from 1.2 V below the supply voltage to 0.2 V above, thus providing good common-mode rejection and low-noise operation. The input bias current is 1 nA and the input offset voltage is 5.5 mV, making it suitable for low-power applications. The BU7481SG-TR also features an output current of 360 mA and a minimum output-drive of 10 mA making it suitable for driving a large load. Overall, the BU7481SG-TR linear amplifier is an excellent choice for low-noise and low-power applications. It has a wide power supply voltage range, low supply current and can support a large load current. It also has a wide common-mode range and low-noise operation, making it ideal for signal conditioning in a wide range of applications.

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