PCM4220系列介绍资料

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PCM4220

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具有 PCM 输出的 123dB SNR 立体声音频 ADC

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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.

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 Ripple
  Classic: ±0.00015dB
  Low 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 and
  Measurement Systems
- Audio Test Systems
- Sonar

All trademarks are the property of their respective owners.

Number of ADC channels	2
Analog inputs	2
Digital audio interface	I2S, L, TDM
Control interface	H/W
Sampling rate (max) (kHz)	216
ADC SNR (typ) (dB)	123
Rating	Catalog
Analog outputs	0
Operating temperature range (°C)	-40 to 85

TQFP (PFB)

81 mm² 9 x 9

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PCM4220

具有 PCM 输出的 123dB SNR 立体声音频 ADC

4000-306-326