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MC145073 bảng dữ liệu(PDF) 1 Page - Motorola, Inc

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Giải thích chi tiết về linh kiện  Dual 16-Bit Stereo Audio Sigma-Delta ADC
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nhà sản xuất  MOTOROLA [Motorola, Inc]
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MOTOROLA
MC145073
1
Product Preview
Dual 16-Bit Stereo Audio
Sigma-Delta ADC
CMOS
The MC145073 is a dual–channel, 16–bit A/D converter intended for use in
digital audio systems such as multimedia, DCC, DAT, and professional audio
applications. It uses a sigma–delta architecture consisting of a second–order
analog modulator and two stages of digital filtering for each channel. The
analog modulator samples the input signal at 128 times the output data rate,
performs a single–bit quantization, and shapes the quantization noise towards
higher frequencies. Subsequent on–chip digital filters reject most of the shaped
quantization noise and lower the data rate.
Sixteen unique user–selectable interfacing modes make the MC145073
compatible with a multitude of application interfacing requirements. A single 5 V
supply and a power–down mode reduce power supply requirements, making
the part attractive for portable applications.
• Single Supply, Operating Voltage Range: 4.5 to 5.5 V
• 128x OSR Sigma–Delta Modulator
• 82 dB Typical S/(N+D)
• Analog Inputs Can Be Driven as Either Differential or Single–Ended
• Clock Input May Be 128x, 256x, or 384x the Output Data Rate
• Out–of–Range Input Signals Internally Limited
• On–Chip Digital Filters:
5th Order Decimate–by–32 Comb Filter
121 Tap Decimate–by–4 FIR Filter
• User–Selectable Digital Filter Transition Bands
• Versatile Serial Digital Output Interface:
Configurable as Master or Slave
Data Can Be Either Left– or Right–Justified
Interfaces to DSP56000/1 and TMS320
™ DSPs
I2S or Japanese Interface Compatibility
CS5326 Compatible Interface Mode
Multiplexing of Two MC145073s Accommodated
• Power–Down Mode Consumption: 2.0 mW
• Operating Temperature Range: – 40 to 85°C
MODULATOR
AIN(+L)
AIN(–L)
COMB FILTER
AIN(+R)
AIN(–R)
MODULATOR
COMB FILTER
VOLTAGE
REFERENCE
CLK
MODES
IN
CLK DIVIDERS/DRIVER
AND CONTROL LOGIC
FIR FILTER
FIR FILTER
SERIAL
INTERFACE
DIGITAL
INTERFACE
This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice.
TMS320 is a trademark of Texas Instruments.
Order this document
by MC145073/D
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
PIN ASSIGNMENT
MC145073
DW SUFFIX
SOG PACKAGE
CASE 751E
ORDERING INFORMATION
MC145073DW SOG Package
CSEL1
FSEL
VAG
VDD(D)
VDD(A)
AIN(+L)
AIN(–L)
REF
VSS(A)
SUB
VSS(D)
FTP
FTP
SYNC
SCLK
AIN(+R)
AIN(–R)
CSEL0
ISYNC
ISLAV
IJUST
IDOE
CLK
SDO
5
4
3
2
1
10
9
8
7
6
14
15
16
17
18
19
20
13
11
12
21
22
23
24
1
24
© Motorola, Inc. 1997
REV 1
5/97


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