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廬

DF1

49%

704

FPO

DF1704

Stereo, 24-Bit, 96kHz

8X Oversampling Digital Interpolation Filter

DIGITAL-TO-ANALOG CONVERTER

TM

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 96kHz

q

SYSTEM CLOCK: 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

+5V SINGLE-SUPPLY OPERATION

q

SMALL 28-LEAD SSOP PACKAGE

BCKIN

LRCIN

DIN

Serial

Input

I/F

DESCRIPTION

The DF1704 is a high performance, stereo, 8X

oversampling digital interpolation filter designed for

high-end consumer and professional audio applica-

tions. The DF1704 supports 24-bit, 96kHz operation

and features user-programmable functions, including

selectable filter response, de-emphasis, attenuation,

and input/output data formats.

The DF1704 is the ideal companion for Burr-Brown鈥檚

PCM1704 24-bit audio digital-to-analog converter.

This combination allows for construction of very high

performance audio systems and components.

(OW0)

(OW1)

(IW0)

(I

2

S)

(IW1)

BCKO

8X Oversampling

Digital Filter with

Function

Controller

WCKO

Output I/F

DOL

DOR

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

V

SS

International Airport Industrial Park 鈥?Mailing Address: PO Box 11400, Tucson, AZ 85734 鈥?Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 鈥?Tel: (520) 746-1111

Twx: 910-952-1111 鈥?Internet: http://www.burr-brown.com/ 鈥?Cable: BBRCORP 鈥?Telex: 066-6491 鈥?FAX: (520) 889-1510 鈥?Immediate Product Info: (800) 548-6132

漏 1998 Burr-Brown Corporation

PDS-1458B

Printed in U.S.A. December, 1998

next

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