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參數(shù)資料
| 型號： | MC145076D |
| 廠商： | MOTOROLA INC |
| 元件分類： | 消費家電 |
| 英文描述： | MC145076 Stereo Audio FIR Smoothing Filter |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO16 |
| 封裝： | SOIC-16 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 120K |
| 代理商： | MC145076D |
MC145076
1
Product Preview
CMOS
The MC145076 is a combination re–clocking and smoothing filter designed
especially for the MC145074 Stereo Audio DAC. Its versatility however, allows
it to be used with any single bit–stream data converter to provide output
reconstruction filtering, and to improve performance by restoring pulse shape
integrity. The MC145076 provides a well controlled, filtered output that can be
used directly, or with a current summing operational amplifier.
The MC145076 is intended to be one half of a two–chip solution for serial bit
steam DACs. The analog filtering function of the MC145076 eases the digital
filtering requirements at the input to the digital noise shaping modulator, and
eliminates the need for precision analog output filtering capacitors, resulting in
lower overall system cost. The MC145076 pulse shape restoration frees the
designer from analog pitfalls that can impact performance, thereby lowering the
risk of new product development with a sigma–delta DAC.
Single–Ended Stereo Outputs Require no Additional Smoothing Filters
86 dB S/D, 96 dB S/N with MC145074 @ 192 x OSR Single Ended
> 100 dB S/(N+D) @ 256 OSR, Differential Mode
18.5 MHz Maximum Serial Data Input Rate
– 80 dB Cross Channel Interference
72–Tap FIR with > 40 dB Alias Filtering
Operating Temperature Range: – 40 to + 85 C
Buffered Data Clock Output for Ease of Data Generation
16–Pin Narrow Body SOIC Package
Single Supply Operation: + 5 V
TIMING
AND
CONTROL
LOGIC
DIL
DIR
DIV2
TEST
Xout
5
6
4
7
16
Xin
2
VDDA
VDDD
GND
GND
1
8
10
15
LEFT 144 SERIAL SHIFT REG.
LEFT CHOP
C (1)
14
IOL
GND
144 TAP HAMMING
WINDOW
COEFFICIENTS
13
9
CLKOUT
RIGHT 144 SERIAL SHIFT REG.
RIGHT CHOP
C (1)
11
IOR
GND
144 TAP HAMMING
WINDOW
COEFFICIENTS
12
C (144)
C (144)
BIAS
3
This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice.
Order this document
by MC145076/D
SEMICONDUCTOR TECHNICAL DATA
PIN ASSIGNMENT
D SUFFIX
16–PIN SOG
CASE 751B–05
ORDERING INFORMATION
MC145076D
SOG Package
13
14
15
16
9
10
11
12
5
4
3
2
1
8
7
6
GND
GND
IOL
GND
Xout
CLKOUT
GND
IOR
DIV2
BIAS
Xin
VDDA
VDDD
TEST
DIR
DIL
16
1
Motorola, Inc. 1996
REV 1
9/96
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