DF1750P Datasheet

IC型號：
DF1750P
PDF描述：
Dual Channel DIGITAL DECIMATION FILTER
文件大小：
213.69KB
PDF頁數(shù)：
13頁
芯片廠家：
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DF1750

Dual Channel

DIGITAL DECIMATION FILTER

FEATURES

USER SELECTABLE FOR 1/4 OR 1/2

DECIMATING RATIOS

USER SELECTABLE FOR 16- OR 18-BIT

INPUT DATA

SERIAL DATA INPUT IS COMPATIBLE

WITH THE BURR-BROWN PCM1750 ADC

FILTERS OUT-OF-BAND NOISE WITH

STOPBAND ATTENUATION > 95dB

PASSBAND RIPPLE < 0.0005dB

SINGLE +5V SUPPLY OPERATION WITH

LOW POWER DISSIPATION OF ONLY

250mW

DESCRIPTION

The DF1750 is a high performance 1/4 or 1/2 decimat-

ing digital filter that is designed for digital audio appli-

cations. This device decimates and filters 2x or 4x (2fs

or 4fs) oversampled data from the output of an ADC to

a data frequency of fs. The technique of oversampling

and decimating allows the input to an oversampling

ADC to be processed by a much lower order, linear

phase, analog low-pass filter. This simultaneously im-

proves system performance while reducing circuit com-

plexity and cost.

The DF1750 provides output data word rates (fs) up to

50.5kHz and it is compatible with the Burr-Brown

PCM1750, dual 18-bit analog-to-digital converter.

SCSL1

SCSL2

2DS

IBCK

DINL

DINR

XTI

XTO

CKEN

CKO

BBC

IBO

TEST

Output Interface Circuit

OW20

FSEN

Timing Control

FIR Filter Circuit

System Clock

Input Interface Circuit

IMOD

LRCK

WDCK

BCK

DOUT

MUTE

LRPOL

OBPOL

International Airport Industrial Park 鈥?Mailing Address: PO Box 11400

Tel: (520) 746-1111 鈥?Twx: 910-952-1111 鈥?Cable: BBRCORP 鈥?/div>

漏 1990 Burr-Brown Corporation

鈥?Tucson, AZ 85734 鈥?Street Address: 6730 S. Tucson Blvd. 鈥?Tucson, AZ 85706

Telex: 066-6491 鈥?FAX: (520) 889-1510 鈥?Immediate Product Info: (800) 548-6132

PDS-1092

Printed in U.S.A. October, 1993

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