High performance 8-channel analog-to-digital converter
The CS5308P is an 8-channel audio ADC providing 32-bit resolution at a rate of up to 768kHz. The CS5308P’s integrated hybrid gain control feature reduces the external pre-amp control circuitry, offering a reduced BOM and simplified design when compared with alternative solutions. The CS5308P is ideal for applications that require a combination of both high performance and low power, offering >120 dB dynamic range and THD+N below -110 dB, all within a 25 mW/ch power budget.
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Technologies
Features
- High performance eight-channel ADC
- Differential analog architecture
- High-resolution 32-bit digital architecture
- Low-latency digital filters and digital volume control
- PLL supports range of external system-clock references
- Synchronous operation across multiple devices
- Hybrid gain control
- Audio serial port (ASP) sample rates up to 768 kHz
- I2S, left-justified, and TDM data formats
- Hardware and software control modes
- Hardware control with no host processor required
- I2C control port up to 1 MHz
- SPI control port up to 24 MHz
- Single-supply operation at 3.3 V
- Support for 1.8 V–3.3 V digital input/output
Parametric Specifications
| Channels (Inputs) | 8 |
| Resolution (bits) | 32 |
| Dynamic Range (dB) | 123 |
| THD+N (dB) | -110 |
| Sample Rate (kHz) | 768 |
| Analog Inputs/Outputs | Differential |
| Analog Power Supply (V) | 3.3 |
| Digital Power Supply (V) | 3.3 |
| Logic Power Supply (V) | 1.8-3.3 |
| Operational Power Consumption (mW) | 200 |
| Package | 48-pin QFN |
Technical Documents
CDB-PROAUDIO User Guide
May 1, 2026, DS1352R4 : 4.0 MBCS530xP Hybrid Gain Control
Mar 16, 2026, AN0596R2 : 1.4 MBDC5302P/4P/4S/8P/8S Schematic and Layout
Aug 1, 2025 : 13.3 MbCS5304P/8P DNR Improvements and ADC Input Channel Summing
Jul 1, 2025, AN0635R3 : 291.5 KBCS530x Input Buffer/Filter Circuits
Jul 1, 2025, AN0556R1 : 383.6 KBCDB-DC5302P/4P/4S/8P/8S-ADC User Guide
Jul 1, 2025, DS1355DB3 : 3.5 MbCS5308P Product Data Sheet
Jun 1, 2025, DS1314F1 : 4.4 MBCS53A08P Product Data Sheet
Dec 1, 2024, DS1398A2 : 3.7 MbCDB-DC5308P-ADC User Guide
Oct 1, 2023, DS1355DB2 : 1.9 MbCS5304-8 Product Bulletin
Jun 19, 2023 : 1.6 MbPress Releases
2023
Jun 20
New Pro Audio Family of Converters from Cirrus Logic Delivers True Transparent Audio Experience
Cirrus Logic helps pro audio product manufacturers easily integrate and customize their products without the converters coloring the audio experience
Selection Guidelines
The CS5308P should be selected when:
- Minimizing audio pop and/or click is critical.
- Synchronizing multiple audio input channels is required.
- Limited engineering resources are available to design your audio product.
- Low latency (4.5/fs) is required across multiple channels
The CS5308P should not be selected when:
- An integrated PGA is required in your audio ADC. In this case the CS48L32 should be considered.
- An SPI interface is required for the output data.
- A tight absolute gain drift (better than 100 ppm/degC) is required.
- Designing a battery power product with a small form factor (TWS headsets, mobile phones). In this case the CS48L32 should be considered.
The primary application for the CS5308P is Digital Mixing Consoles. The CS5308P is placed directly after an input line and/or mic-pre gain stage, converting analog audio, providing data output to FPGAs/DSPs and MCUs.
Additional relevant applications include: DAW (digital audio workstation) interfaces, USB Audio interfaces, audio interfaces, musical instruments, powered amplifiers, audio DSPs, networked amplifiers, audio IO peripherals, effects processors, audio receivers, video receivers, professional loudspeakers, doppler ultrasound, automotive audio amplifiers, wired and wireless headsets.