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PRODUCT OVERVIEW

Reference

Multi-Bit

Delta-Sigma

Multi-Bit

Delta-Sigma

Digital

Filters

Audio

Serial

Port

Reset

Logic

Control

and

Status

MasterClock

andTiming

VINL+

VCOML

REFGNDL

VREFL

S/M

FMT0

FMT1

OWL0

OWL1

SUB0

SUB1

PCMEN

FS0

FS1

OVFL

OVFR

RST

LRCK

BCK

DATA

DF

HPFDL

HPFDR

VREFR

MCKI

REFGNDR

VCOMR

VINL-

VINR+

VINR-

PCM4220

SBAS407A – DECEMBER 2006 – REVISED MAY 2007

The PCM4220 is a two-channel, multi-bit delta-sigma A/D converter. The 6-bit output from the delta-sigma

modulators is routed to the digital decimation filter, where the output of the filter provides linear PCM data. The

linear PCM data are output at the audio serial port interface for connection to external processing and logic

circuitry.

Figure 34 shows a simplified functional block diagram for the PCM4220, highlighting the interconnections

between the various functional blocks.

Figure 34. Functional Block Diagram

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