IC-Mart Your Trusted Source for Audio Sample Rate Converters Chips

(from leading manufacturers)

International Manufacturers and Typical Models

1. Texas Instruments (TI)

• Standalone ASRC (Asynchronous SRC):
  • SRC4192 / SRC4190: Industry-standard models. They support 192kHz/24-bit with a 140dB dynamic range. Widely used in mid-to-high-end Hi-Fi decoders.
  • SRC4193: An upgraded version of the SRC4192. It is optimized for ultra-low distortion in professional audio.
  • SRC4184: A 4-channel (2×2) ASRC. Ideal for multi-channel systems.
• Integrated SRC + Transceiver:
  • SRC4392 / SRC4382: High-integration flagship models. A single chip includes an ASRC, a Digital Audio Receiver (DIR), and a Transmitter (DIT). Common in digital mixing consoles.
  • DIX4192 / DIX9211: Focused on interface conversion (e.g., S/PDIF to I2S) with integrated sampling rate adjustment.

2. Cirrus Logic

• Standalone ASRC:
  • CS8421: A classic 32-bit, 192kHz ASRC chip. Known for excellent jitter suppression and simple peripheral circuit design.
• Integrated SRC + Receiver:
  • CS8422: Combines a 24-bit/192kHz DIR with an ASRC. It automatically detects input frequencies and converts them to a fixed system frequency.

3. Asahi Kasei (AKM)

• High-Performance SRC:
  • AK4137EQ: One of the highest-performing ASRCs on the market. It supports 768kHz PCM and allows bidirectional conversion between PCM and DSD. A favorite for high-end audiophile equipment.
  • AK4127: A cost-effective 192kHz/24-bit dual-channel ASRC. Frequently used in car audio and mid-range players.
• Integrated Audio Processors:
  • AK4604 / AK4606: Multi-channel audio CODECs or switch chips with integrated SRC functions.

4. Analog Devices (ADI)

• Professional Grade ASRC:
  • AD1896: A legendary 24-bit/192kHz converter. Its clock reconstruction algorithm performs exceptionally well with high-jitter signals.
  • AD1895: A low-voltage, low-power version of the AD1896. Used in portable or automotive systems.
• Application-Specific Models:
  • ADAV801 / ADAV803: Audio CODECs with SRC designed specifically for digital recording devices like DVD recorders.

Quick Selection Guide

Core Requirement	Recommended Manufacturer	Recommended Models
Ultra-High Dynamic Range (140dB)	TI	SRC4192
DSD Conversion Support	AKM	AK4137EQ
Integrated S/PDIF Receiver	TI / Cirrus Logic	SRC4392 / CS8422
High Jitter Environments	ADI	AD1896
Multi-channel (4+ Channels)	TI	SRC4184

Chinese Domestic Manufacturers and Models

1. Standalone ASRCs

These chips are the primary drivers of domestic replacement, directly rivaling the Cirrus Logic CS8422 or TI SRC series.

• Ruimeng Technology (RJM)
  • Model: MS8422N
  • Position: 24-bit, 192kHz ASRC with integrated DIR.
  • Features: A highly mature model that directly rivals the CS8422. It solves clock matching issues between different digital sources. Common in soundbars, digital amplifiers, and car audio.
• Guanghuaxin (CJC)
  • Model: CJC5340, CJC1808
  • Position: High-performance audio ADCs with sample processing capabilities.
  • Features: Flexible sampling rate adaptation at the digital output. Widely used in microphones and sound cards.

2. Audio DSP with Integrated ASRC

A key feature of domestic chips is integrating the ASRC as a hardware module within a powerful Digital Signal Processor (DSP).

• Mvsilicon
  • Model: DU561, AP6225
  • Position: High-fidelity audio DSPs.
  • Features: Built-in high-performance ASRC modules. They convert various input rates to a unified internal frequency. Used in karaoke speakers and automotive DSPs.
• Actions Technology
  • Model: ATS283X series, ATS301X series
  • Position: Bluetooth Audio SoCs.
  • Features: Uses internal ASRC modules to mix Bluetooth audio (44.1k/48k) with local or I2S signals (96k/192k).

3. Audio CODEC with SRC

• Everest Semiconductor
  • Model: ES7243 (ADC), ES8388 (CODEC)
  • Position: Low-power, high-performance audio CODECs.
  • Features: Supports a wide range of frequency conversions from 8kHz to 200kHz. Used in smart homes, OTT boxes, and portable video devices.
• Chipsea
  • Model: CS1232 / CS1795X (Automotive Grade)
  • Position: High-precision ADC / Analog signal chain.
  • Features: Integrates resampling algorithms into SoCs for applications like automotive audio monitoring.

China Domestic Chip Comparison Logic

Chip Type	Representative Brands	Core Logic & Advantages
Standalone ASRC	Ruimeng (MS8422N)	Pin-to-pin replacement for international brands; reduces supply chain risk.
Integrated Audio DSP	Mvsilicon, Actions	ASRC acts as a hard-core module; high integration for complex audio processing.
Consumer ADC/CODEC	Everest, CJC	Focused on cost-effectiveness; meets sampling needs for consumer electronics.

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Core Functions: What Problems Does Audio Sample Rate Converters IC Solve?

1. Eliminating Frequency Mismatch: Direct input of a 44.1 kHz signal into a 48 kHz processor causes distortion and noise. SRC acts as a frequency “translator.”
2. Removing Jitter: ASRCs do not rely on the input clock. They “clean” data using high-quality local clocks to improve sound quality.
3. Standardization for Mixing: DSPs must unify Bluetooth, USB, and radio audio to a single sampling rate before mixing.

Typical Application Scenarios

1. Professional Studios & Mixing Consoles: Ensures all external sources (96kHz, 192kHz, etc.) match the main console’s frequency before mixing.
2. High-End Hi-Fi DACs: ASRCs perform up-sampling and re-clocking to reduce distortion and improve bit depth.
3. Automotive Infotainment: Unifies diverse signals (Bluetooth, FM, Navigation, Parking Sensors) to a fixed DSP frequency (usually 48kHz).
4. TVs & Soundbars: Solves compatibility issues between TV outputs (often 48kHz) and soundbar processors.
5. Sound Cards & Live Streaming: Ensures audio from different software (accompaniment, vocals, calls) does not conflict when combined.

Manufacturer Market Positioning

Manufacturer	Market Advantage & Positioning	Representative Series
Texas Instruments (TI)	Highest market share; covers industrial to high-performance grades.	SRC41xx, SRC43xx
Cirrus Logic	Focuses on CODECs; highly influential in consumer and high-end audio.	CS84xx
Asahi Kasei (AKM)	Focuses on “Velvet Sound”; leader in DSD and high-sample-rate support.	AK41xx
Analog Devices (ADI)	Strong DSP background; common in pro-broadcast, studios, and automotive.	AD18xx, ADAVxx