INA2134UA Integrated Circuits (ICs)

Series:	--
Packaging:	Tube
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Type:	Class AB
Output Type:	2-Channel (Stereo)
Max Output Power x Channels @ Load:	--
Voltage - Supply:	8 V ~ 36 V, ±4 V ~ 18 V
Features:	--
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Supplier Device Package:	14-SOIC
Package / Case:	14-SOIC (0.154", 3.90mm Width)
Base Part Number:	INA2134

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INA2134UA application field and working principle

The INA2134UA is a precision audio amplifier from Texas Instruments. It belongs to the family of linear amplifiers, offering outstanding performance in audio applications such as sound bars, home theater receivers, and portable audio devices.

Application fields

The INA2134UA is a high-performance, low-power amplifier that is designed for demanding audio applications. It provides a wide range of features such as enable/shutdown, DC servo, and a low-pass filter. With these features, it is suitable for applications such as portable audio, soundbars, home theater receivers, studio mixers, and professional audio systems. Additionally, it operates from a single 5 V or 3 V power supply. With a 1.5 mA typical quiescent current, it saves power, which helps to extend battery life.

Working principle

The INA2134UA is a dual-channel, voltage-feedback audio amplifier that operates over a supply voltage range of 1.5 V to 5.5 V. It is capable of delivering an output of up to 800 mV peak-to-peak, with a minimal distortion of 0.2%. Furthermore, it utilizes a MutePin feature that helps reduce the current consumption of the amplifier during the mute mode.At the heart of the circuit is two differential input buffers that are used to amplify the signal prior to the main amplifier stage. These input buffers act as a high-impedance line receiver. After that, the signal is amplified with a pair of low distortion amplifier stages. These stages are designed to achieve a high slew rate and wide bandwidth. Furthermore, the amplifier is also equipped with an active output voltage follower. This helps to provide better overall power supply rejection ratio and phase margin.The INA2134UA also utilizes advanced thermal protection mechanisms that help reduce damage due to temperature variation. It also features a SleepMode function that can keep the amplifier in low power mode during periods of low or no signal.

Conclusion

The INA2134UA is a precision audio amplifier from Texas Instruments. It belongs to the family of linear amplifiers, offering outstanding performance in audio applications such as sound bars, home theater receivers, and portable audio devices. It has a wide range of features such as enable/shutdown, DC servo, and a low-pass filter. Additionally, it operates from a single 5 V or 3 V power supply with a minimal distortion of 0.2%. It also supports advanced thermal protection mechanisms and low power mode during periods of low or no signal. With its high performance and wide range of features, the INA2134UA is the ideal solution for audio applications.

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