OPA129UB Integrated Circuits (ICs)

Voltage - Input Offset:	500µV
Base Part Number:	OPA129
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply, Single/Dual (±):	10 V ~ 36 V, ±5 V ~ 18 V
Current - Output / Channel:	10mA
Current - Supply:	1.2mA
Series:	Difet®
Current - Input Bias:	0.03pA
Gain Bandwidth Product:	1MHz
Slew Rate:	2.5 V/µs
Output Type:	--
Number of Circuits:	1
Amplifier Type:	General Purpose
Part Status:	Active
Packaging:	Tube

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OPA129UB Application Field and Working Principle
The OPA129UB is an ultra-low noise power operational amplifier (op amp) with a wide operating range. It is specifically designed for today\'s demanding, wide dynamic range signal-processing applications. The OPA129UB features a tiny 14-lead Ultra Small Outline Package (USO14), high slew rate, and low distortion and noise. The amplifier offers offset voltages of 2.5mV, supply current of only 8.5mA, and a bandwidth of 1.3MHz.
Application FieldThe OPA129UB is a versatile instrumentation amplifier with a wide range of uses. It offers unmatched performance in many applications, from audio to industrial processes. This op amp is suitable for signal processing applications such as data acquisition, filtering, equalization and amplifier control circuit applications. It has extremely low noise and distortion and can be used in audio systems and broadcast, automation and control systems, medical monitoring devices and test and measurement instrumentation.Working PrincipleThe OPA129UB is a high performance power op amp offering wide operating ranges. It performs voltages summation and difference actions, as well as amplification and isolation of high speed signals in systems. The OPA129UB contains two high voltage voltage followers,comprising two N-channel FET current mirror inputs and two P-channel FETs, forming a differential amplifier. This provides a high common-mode immunity from noise and a low output offset voltage. The amplifier operates on a single supply voltage and provides a low noise figure of 1µV/VHz. Input offset voltage is typically 2.5mV, while the output voltage swings up to the supply voltage. Supply voltage current draw is 8.5mA, which makes it suitable for low power applications. Slew rate is selectable between 0.9V/µs and 1.35V/µs.The OPA129UB is a great choice for audio applications, offering an excellent signal to noise ratio of 92dB (max). It is also capable of driving up to ±22V buses with its 0.54A peak output current (max). Its low distortion and noise features make the OPA129UB a popular choice for applications such as equalizers, mixers, studio mixers, headphones, and high-end audio systems.The amplifier is well-suited to harsh industrial environments as well, as its robust design provides ESD, transient and power supply protection. The device is also immune to EMI and RFI. The OPA129UB’s innovative design and uncompromising performance makes it an ideal choice for high bandwidth and high accuracy applications.

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