CS42L55-CNZ

Product Overview

• Category: Audio Codec
• Use: The CS42L55-CNZ is a high-performance audio codec designed for portable audio applications such as smartphones, tablets, and portable media players.
• Characteristics:
  • High-quality audio playback and recording capabilities
  • Low power consumption
  • Small form factor
  • Integrated digital signal processing (DSP) features
• Package: The CS42L55-CNZ comes in a compact 48-pin QFN package.
• Essence: This audio codec provides a comprehensive solution for audio processing and playback in portable devices.
• Packaging/Quantity: The CS42L55-CNZ is typically sold in reels of 2500 units.

Specifications

• Audio Performance:
  • Signal-to-Noise Ratio (SNR): 105 dB
  • Total Harmonic Distortion + Noise (THD+N): 0.001%
  • Dynamic Range (DR): 105 dB
• Power Supply:
  • Voltage Range: 2.5V to 3.6V
  • Power Consumption: 8 mW (typical)
• Digital Audio Interface:
  • Supported Formats: I2S, PCM
  • Sample Rates: 8 kHz to 192 kHz
• Analog Inputs:
  • Microphone Inputs: 4
  • Line Inputs: 2
• Analog Outputs:
  • Headphone Outputs: 2
  • Line Outputs: 2

Pin Configuration

The CS42L55-CNZ has a total of 48 pins. Here is the detailed pin configuration:

1. VDDIO
2. GND
3. MICBIAS1
4. MICBIAS2
5. MICIN1P
6. MICIN1N
7. MICIN2P
8. MICIN2N
9. MICIN3P
10. MICIN3N
11. MICIN4P
12. MICIN4N
13. LINEIN1L
14. LINEIN1R
15. LINEIN2L
16. LINEIN2R
17. HPOUT1L
18. HPOUT1R
19. HPOUT2L
20. HPOUT2R
21. LINEOUT1L
22. LINEOUT1R
23. LINEOUT2L
24. LINEOUT2R
25. VDDA
26. AVDD
27. DVDD
28. GND
29. SDA
30. SCL
31. RESETB
32. MCLK
33. BCLK
34. LRCLK
35. SDOUT
36. SDIN
37. GPIO1
38. GPIO2
39. GPIO3
40. GPIO4
41. GPIO5
42. GPIO6
43. GPIO7
44. GPIO8
45. GPIO9
46. GPIO10
47. GPIO11
48. GPIO12

Functional Features

• High-quality audio playback and recording
• Integrated digital signal processing (DSP) for audio enhancement
• Low power consumption for extended battery life
• Flexible digital audio interface supporting multiple formats and sample rates
• Multiple microphone and line inputs for versatile audio input options
• Headphone and line outputs for audio playback through external devices

Advantages and Disadvantages

Advantages: - High audio performance with low distortion and noise levels - Compact form factor suitable for portable devices - Integrated DSP features for audio enhancement - Versatile input and output options for various audio applications

Disadvantages: - Limited number of GPIO pins for additional functionality - Requires external components for power supply and audio amplification

Working Principles

The CS42L55-CNZ audio codec utilizes advanced digital signal processing algorithms to convert analog audio signals into digital format and vice versa. It integrates high-performance ADCs (Analog-to-Digital Converters) and DACs (Digital-to-Analog Converters) to ensure accurate audio reproduction. The codec also incorporates various audio enhancement features such as equalization, dynamic range control, and noise reduction.

The device communicates with the host processor through a digital audio interface, supporting formats like I2S and PCM. It operates on a low voltage supply and consumes minimal power, making it suitable for battery-powered portable devices.

Detailed Application Field Plans

The CS42L55-CNZ is widely used in various portable audio applications, including:

1. Smartphones and tablets
2. Portable media players
3. Bluetooth speakers
4. Gaming consoles
5. Wearable devices with audio capabilities

Its high audio performance, low power consumption, and small form factor make it an ideal choice for these applications,