PCM4220PFBG4中文資料德州儀器數(shù)據(jù)手冊(cè)PDF規(guī)格書

DESCRIPTION

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.

1FEATURES

234· 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

· 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