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MC14555BCPS PDF预览

MC14555BCPS

更新时间： 2024-11-10 13:11:15
品牌 Logo 应用领域
摩托罗拉 - MOTOROLA PC
页数 文件大小 规格书
20页 345K
描述
Decoder/Driver, CMOS, PDIP16

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中文翻译

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MC14555BCPS 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
包装说明：DIP, DIP16,.3Reach Compliance Code：unknown
风险等级：5.92JESD-30 代码：R-PDIP-T16
JESD-609代码：e0逻辑集成电路类型：OTHER DECODER/DRIVER
功能数量：2端子数量：16
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：DIP
封装等效代码：DIP16,.3封装形状：RECTANGULAR
封装形式：IN-LINE电源：5/15 V
认证状态：Not Qualified子类别：Decoder/Drivers
表面贴装：NO技术：CMOS
温度等级：INDUSTRIAL端子面层：Tin/Lead (Sn/Pb)
端子形式：THROUGH-HOLE端子节距：2.54 mm
端子位置：DUALBase Number Matches：1

MC14555BCPS 数据手册

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Order this document  
by MC145554/D  
SEMICONDUCTOR TECHNICAL DATA  
The MC145554, MC145557, MC145564, and MC145567 are all per channel  
PCM Codec–Filters. These devices perform the voice digitization and  
reconstruction as well as the band limiting and smoothing required for PCM  
systems. They are designed to operate in both synchronous and asynchronous  
applications and contain an on–chip precision voltage reference. The  
MC145554 (Mu–Law) and MC145557 (A–Law) are general purpose devices  
that are offered in 16–pin packages. The MC145564 (Mu–Law) and MC145567  
(A–Law), offered in 20–pin packages, add the capability of analog loopback and  
push–pull power amplifiers with adjustable gain.  
L SUFFIX  
CERAMIC PACKAGE  
CASE 620  
These devices have an input operational amplifier whose output is the input  
to the encoder section. The encoder section immediately low–pass filters the  
analog signal with an active R–C filter to eliminate very–high–frequency noise  
from being modulated down to the pass band by the switched capacitor filter.  
From the active R–C filter, the analog signal is converted to a differential signal.  
From this point, all analog signal processing is done differentially. This allows  
processing of an analog signal that is twice the amplitude allowed by a  
single–ended design, which reduces the significance of noise to both the  
inverted and non–inverted signal paths. Another advantage of this differential  
design is that noise injected via the power supplies is a common–mode signal  
that is cancelled when the inverted and non–inverted signals are recombined.  
This dramatically improves the power supply rejection ratio.  
MC145554/57  
16  
1
P SUFFIX  
PLASTIC DIP  
CASE 648  
16  
MC145554/57  
1
DW SUFFIX  
SOG PACKAGE  
CASE 751G  
16  
1
MC145554/57  
After the differential converter, a differential switched capacitor filter band  
passes the analog signal from 200 Hz to 3400 Hz before the signal is digitized  
by the differential compressing A/D converter.  
The decoder accepts PCM data and expands it using a differential D/A  
converter. The output of the D/A is low–pass filtered at 3400 Hz and sinX/X  
compensated by a differential switched capacitor filter. The signal is then filtered  
by an active R–C filter to eliminate the out–of–band energy of the switched  
capacitor filter.  
L SUFFIX  
CERAMIC PACKAGE  
CASE 732  
20  
1
MC145564/67  
These PCM Codec–Filters accept both long–frame and short–frame industry  
standard clock formats. They also maintain compatibility with Motorola’s family  
of TSACs and MC3419/MC34120 SLIC products.  
The MC145554/57/64/67 family of PCM Codec–Filters utilizes CMOS due to  
its reliable low–power performance and proven capability for complex  
analog/digital VLSI functions.  
P SUFFIX  
PLASTIC DIP  
CASE 738  
20  
1
MC145564/67  
DW SUFFIX  
SOG PACKAGE  
CASE 751D  
MC145554/57 (16–Pin Package)  
20  
•
•
•
•
•
•
•
•
Fully Differential Analog Circuit Design for Lowest Noise  
Performance Specified for Extended Temperature Range of – 40 to + 85°C  
Transmit Band–Pass and Receive Low–Pass Filters On–Chip  
Active R–C Pre–Filtering and Post–Filtering  
Mu–Law Companding MC145554  
A–Law Companding MC145557  
1
MC145564/67  
On–Chip Precision Voltage Reference (2.5 V)  
Typical Power Dissipation of 40 mW, Power Down of 1.0 mW at ± 5 V  
MC145564/67 (20–Pin Package) — All of the Features of the MC145554/57 Plus:  
•
•
•
•
Mu–Law Companding MC145564  
A–Law Companding MC145567  
Push–Pull Power Drivers with External Gain Adjust  
Analog Loopback  
REV 1  
9/95 (Replaces ADI1517)  
Motorola, Inc. 1995  
1234567...20

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