Overview
The PCM4220PFBR, produced by Texas Instruments, is a high-performance, two-channel, 24-bit analog-to-digital converter (ADC) designed for professional audio applications. This multi-bit delta-sigma (ΔΣ) ADC is optimized for digital audio recording and processing, offering superior dynamic performance and flexibility. The device supports output sampling rates from 8 kHz to 216 kHz and features a linear phase digital decimation filtering engine with both Classic and Low Group Delay filter responses, making it suitable for both studio and live sound applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Sampling Rate | Normal mode | 8 | - | 54 | kHz |
| Output Sampling Rate | Double Speed mode | 54 | - | 108 | kHz |
| Output Sampling Rate | Quad Speed mode | 108 | - | 216 | kHz |
| Master Clock Input Frequency | Normal mode | 2.048 | - | 13.824 | MHz |
| Analog Supply Voltage | - | 3.8 | 4.0 | 4.2 | V |
| Digital Supply Voltage | - | 2.4 | 3.3 | 3.6 | V |
| Total Power Dissipation (fS = 48kHz) | - | 305 | - | 360 | mW |
| Dynamic Range (A-weighted) | -60dB input | - | 123 | - | dB |
| Full-scale Input Range | Differential input | - | - | 5.6 | VPP |
Key Features
- High-performance, two-channel, 24-bit analog-to-digital conversion.
- Supports output sampling rates from 8 kHz to 216 kHz.
- Linear phase digital decimation filtering engine with Classic and Low Group Delay filter responses.
- Digital high-pass filtering for DC offset removal.
- Audio serial port interface supporting Left-Justified, I2S, and TDM data formats.
- Differential voltage inputs with on-chip voltage reference for improved power-supply noise rejection.
- Master or Slave mode operation.
- Overflow indicators for the left and right channels.
- Low power dissipation: approximately 300 mW typical total power dissipation.
- Available in a RoHS-compliant TQFP-48 package.
Applications
The PCM4220 is ideal for a variety of digital audio recording and processing applications, including:
- Professional audio equipment.
- Studio recording systems.
- Live sound systems.
- Multi-channel audio systems.
- Audiophile-grade consumer electronics.
Q & A
- What is the output sampling rate range of the PCM4220?
The PCM4220 supports output sampling rates from 8 kHz to 216 kHz.
- What types of filter responses does the PCM4220 support?
The PCM4220 supports both Classic and Low Group Delay filter responses.
- What data formats are supported by the audio serial port interface?
The audio serial port interface supports Left-Justified, I2S, and TDM data formats.
- What is the typical total power dissipation of the PCM4220?
The typical total power dissipation is approximately 300 mW.
- What is the full-scale input range of the differential voltage inputs?
The full-scale input range is 5.6 VPP.
- What is the dynamic range of the PCM4220?
The dynamic range is typically 123 dB (A-weighted) for a -60 dB input.
- Does the PCM4220 have built-in high-pass filtering?
Yes, the PCM4220 includes digital high-pass filtering for DC offset removal.
- What package type is the PCM4220 available in?
The PCM4220 is available in a RoHS-compliant TQFP-48 package.
- What are the recommended supply voltage ranges for the PCM4220?
The recommended supply voltage ranges are 3.8V to 4.2V for the analog supply and 2.4V to 3.6V for the digital supply.
- Is the PCM4220 suitable for multi-channel audio systems?
Yes, the PCM4220 is suitable for multi-channel audio systems due to its low power dissipation and high performance.
