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49%

FPO

www.ti.com

DF1706

DF1

706

Stereo, 24-Bit, 192kHz

8x Oversampling Digital Interpolation Filter

FEATURES

q

COMPANION DIGITAL FILTER FOR THE

PCM1704 24-BIT AUDIO DAC

q

HIGH PERFORMANCE FILTER:

Stopband Attenuation: 鈥?15dB

Passband Ripple:

鹵

0.00005dB

q

AUDIO INTERFACE:

Input Data Formats: Standard, Left-

Justified, and I

2

S

Input Word Length: 16, 20, or 24 Bits

Output Word Length: 16, 18, 20, or 24 Bits

Sampling Frequency: 32kHz to 192kHz

q

SYSTEM CLOCK: 128f

S

, 192f

S

, 256f

S

,

384f

S

, 512f

S

, 768f

S

q

ON-CHIP CRYSTAL OSCILLATOR

q

PROGRAMMABLE FUNCTIONS:

Hardware or Software Control Modes

Sharp or Slow Roll-Off Filter Response

Soft Mute

Digital De-Emphasis

Independent Left/Right Digital Attenuation

q

+3.3V SINGLE-SUPPLY OPERATION

q

SMALL SSOP-28 PACKAGE

DESCRIPTION

The DF1706 is a high performance, stereo, 8X

oversampling digital interpolation filter designed for

high-end consumer and professional audio applica-

tions. The DF1706 supports 24-bit, 192kHz operation

and features user-programmable functions, including

selectable filter response, de-emphasis, attenuation,

and input/output data formats.

The DF1706 is the ideal companion for Texas

Instruments鈥檚 PCM1704 24-bit audio Digital-to-Ana-

log (D/A) converter. This combination allows for the

construction of very high-performance audio systems

and components.

(OW0)

(OW1)

(IW0)

(IW1)

(I

2

S)

BCKIN

LRCIN

DIN

Serial

Input

I/F

BCKO

8X Oversampling

Digital Filter with

Function

Controller

WCKO

Output I/F

DOL

DOR

x4

MD/CKO

MC/LRIP

ML/RESV

MODE

(MUTE)

RST

(DEM)

Crystal/OSC

Power Supply

Mode

Control

I/F

SCK

(SF0) (SF1) (SRO)

XTI

XTO

CLKO

V

DD

DGND

Copyright 漏 2001, Texas Instruments Incorporated

SBAS182

Printed in U.S.A. January, 2001

next

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