The Qualcomm WCD9370 is a high-performance audio codec and audio hub designed for mobile and embedded applications. It integrates features such as high-quality audio playback and recording, voice processing, active noise cancellation, and smart audio routing. It supports multiple microphone and speaker configurations, as well as advanced audio processing capabilities.

If you're looking for equivalent ICs to the Qualcomm WCD9370, you will generally be seeking audio codecs or audio hubs with similar performance, features, and compatibility for mobile, consumer, or embedded systems. Here are some possible equivalents from different manufacturers:

1. Cirrus Logic

• CS47L35: A high-performance, low-power audio codec, offering advanced features like voice processing, noise cancellation, and high-fidelity audio playback and recording. This codec is often used in smartphones, tablets, and other portable devices, much like the Qualcomm WCD9370.

• CS48L30: A low-power audio codec designed for similar applications, supporting voice capture, playback, and noise reduction features.

2. Realtek

• RT5631: An advanced audio codec that supports high-quality playback and recording, and comes with integrated features like microphone array support, advanced noise suppression, and voice processing.

• RT5682: A popular audio codec for mobile and consumer electronics, providing audio playback, capture, and high-fidelity processing with noise suppression and acoustic echo cancellation.

3. Analog Devices

• ADAU1761: A low-power, high-performance audio codec with a variety of advanced features, including active noise cancellation, digital processing, and integrated microphones. It’s commonly used in mobile applications, similar to the WCD9370.

• ADAU1372: A high-quality audio codec with integrated DSP processing for audio enhancement and noise reduction, ideal for portable audio devices.

4. Texas Instruments

• TLV320AIC3254: A versatile audio codec with high-performance features like microphone array support, advanced noise cancellation, and low-power consumption. It is used in a variety of portable, mobile, and embedded applications.

• TLV320AIC3106: A low-power audio codec, providing stereo audio playback and recording, with built-in noise suppression and other audio enhancements.

5. Nuvoton

• NAU88L25: A low-power audio codec supporting high-quality playback, voice processing, and noise cancellation. It is used in mobile and IoT devices, and could be a suitable alternative to the WCD9370.

6. Qualcomm (Alternatives within Qualcomm)

• Qualcomm WCD9340: Another Qualcomm audio codec, providing similar features like multi-microphone support, noise cancellation, and high-fidelity audio for mobile and wearable devices. The WCD9340 offers lower power consumption and supports voice capture and playback processing.

• Qualcomm WCD9310: A previous-generation audio codec from Qualcomm, supporting high-quality audio playback and recording, and offering noise cancellation and advanced audio processing for mobile applications.

Key Specifications to Compare:

• Audio Quality: Check for sample rate support (e.g., 48kHz, 96kHz) and dynamic range (e.g., SNR, THD) to ensure high-quality audio performance.

• Voice Processing: Look for built-in features like voice activity detection, echo cancellation, noise suppression, and active noise cancellation (ANC), especially if you need the codec for voice communication or hearing aid applications.

• Microphone/ Speaker Support: Verify support for multiple microphones (e.g., stereo, multi-mic arrays) and multi-speaker configurations if your application needs those features.

• Power Consumption: Ensure the IC supports low-power modes, especially if your application is battery-powered (e.g., mobile or wearable devices).

• Interface Compatibility: Ensure the codec supports the right digital interfaces (e.g., I2S, PCM, PDM, I2C, SPI) based on your system's design.

• Package Type: Choose the appropriate package (e.g., QFN, LQFP) depending on the space and integration needs of your design.

These alternatives should provide similar functionality to the Qualcomm WCD9370 in terms of audio quality, voice processing, and noise reduction. Your choice will depend on specific features needed for your design, such as multi-microphone support, DSP capabilities, or power consumption.