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
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