Texas Instruments OPA1622 SoundPlus Audio Operational Amplifier Datasheet

About this manual

The OPA1622 is a dual-channel, bipolar-input, SoundPlus™ audio operational amplifier designed for high-fidelity applications. It features ultra-low input voltage noise of 2.8 nV/√Hz at 1 kHz and an ultra-low total harmonic distortion plus noise (THD+N) of –119 dB when driving 32 Ω loads with 142 mW per channel.

The device supports a wide supply voltage range from ±2 V to ±18 V and offers high output drive capability, capable of delivering +145 mA/–130 mA. It includes a shutdown mode that reduces the quiescent current to less than 5 μA per channel to eliminate click-and-pop noise during power transitions. The OPA1622 is available in a small 10-pin VSON package. This manual is written in Chinese.

What's inside

• Features
• Applications
• Pin Configuration and Functions
• Specifications
• Electrical Characteristics
• Typical Characteristics
• Detailed Description
• Power Supply Recommendations
• Layout

Frequently asked questions

What is the output short-circuit current capability?

The device can provide a continuous short-circuit current of +145 mA/–130 mA.

What is the maximum total harmonic distortion plus noise (THD+N) for the OPA1622?

The device achieves a maximum THD+N of –116 dB when driving a 32Ω load with 10mW of output power.

What is the maximum output current the OPA1622 can provide?

The amplifier can deliver a maximum output current of +145 mA or –130 mA.

What is the quiescent current per channel when the OPA1622 is enabled?

The typical quiescent current is 2.6 mA per channel when the enable pin is high.