PCM4220 - High-Performance 24-Bit Sampling Analog-to-Digital Converter

PCM4220是TI德州仪器公司的一款音频ADC产品，PCM4220是High-Performance 24-Bit Sampling Analog-to-Digital Converter，本站介绍了PCM4220的封装应用图解、特点和优点、功能等，并给出了与PCM4220相关的TI元器件型号供参考。

PCM4220 - High-Performance 24-Bit Sampling Analog-to-Digital Converter - 音频ADC - 音频转换器 - 德州仪器

产品描述

The PCM4220 is a high-performance, two-channel analog-to-digital (A/D) converter designed for use in professional audio applications. Offering outstanding dynamic performance, the PCM4220 provides 24-bit linear PCM output data, with support for output word length reduction to 20-, 18-, or 16-bits. The PCM4220 includes three sampling modes, supporting output sampling rates from 8kHz to 216kHz. The PCM4220 is ideal for a variety of digital audio recording and processing applications.

A linear phase digital decimation filtering engine supports Classic and Low Group Delay filter responses, allowing optimization for either studio or live sound applications. In addition, digital high-pass filtering is provided for DC offset removal. The The PCM4220 is configured using dedicated control pins for selection of sampling modes, audio data formats and word length, decimation filter response, high-pass filter disable, and reset/power-down functions.

While providing uncompromising performance, the PCM4220 addresses power concerns with just over 300mW typical total power dissipation, making the device suitable for multi-channel audio systems. The PCM4220 is typically powered from a +4.0V analog supply and a +3.3V digital supply. The digital I/O is logic-level compatible with common digital signal processors, digital interface transmitters, and programmable logic devices. The PCM4220 is available in a TQFP-48 package, which is RoHS-compliant.

产品特性

Supports Linear PCM Output Data
- Output Sampling Rates from 8kHz to 216kHz
Differential Voltage Inputs
On-Chip Voltage Reference Improves Power-Supply Noise Rejection
Dynamic Performance (24-bit word length)
- Dynamic Range (60dB input, A-weighted): 123dB typical
- Dynamic Range (60dB input, 20kHz bandwidth): 121dB typical
- Total Harmonic Distortion + Noise (1dB input, 20kHz bandwidth):108dB typical
- Channel Separation: 135dB
Low Power Dissipation:
- 305mW typical for 48kHz sampling rate
- 330mW typical for 96kHz sampling rate
- 340mW typical for 192kHz sampling rate
Linear Phase Digital Decimation Filtering
- Select from Classic or Low Group Delay Filter Responses
- Low Passband RippleClassic: ±0.00015dBLow Group Delay: ±0.001dB

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Digital High-Pass Filtering Removes DC Offset
- Left and Right Channel Filters May Be Disabled Independently
Audio Serial Port Interface
- Master or Slave Mode Operation
- Supports Left-Justified, I2S, and TDM Data Formats
Output Word Length Reduction
Overflow Indicators for the Left and Right Channels
Analog Power Supply: +4.0V nominal
Digital Power Supply: +3.3V nominal
Power-Down Mode: 4mW typical
Package: TQFP-48, RoHS compliant
APPLICATIONS
- Digital Audio Recorders and Mixing Desks
- Digital Live Sound Consoles
- Digital Audio Effects Processors
- Surround Sound Encoders
- Broadcast Studio Equipment
- Data Acquisition andMeasurement Systems
- Audio Test Systems
- Sonar

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