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TMC2242CKTC1 PDF预览

TMC2242CKTC1

更新时间： 2024-11-17 22:28:35
品牌 Logo 应用领域
飞兆/仙童 - FAIRCHILD DSP外围设备微控制器和处理器外围集成电路LTE时钟
页数 文件大小 规格书
16页 91K
描述
Digital Half-Band Interpolating/Decimating Filter 12-bit In/16-bit Out, 60 MHz

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中文翻译

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TMC2242CKTC1 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：QFP包装说明：QFP, QFP44,.5SQ,32
针数：44Reach Compliance Code：unknown
ECCN代码：3A001.A.3HTS代码：8542.39.00.01
风险等级：5.71Is Samacsys：N
边界扫描：NO最大时钟频率：60 MHz
外部数据总线宽度：12JESD-30 代码：S-PQFP-G44
JESD-609代码：e0长度：10 mm
低功率模式：NO端子数量：44
最高工作温度：70 °C最低工作温度：
输出数据总线宽度：16封装主体材料：PLASTIC/EPOXY
封装代码：QFP封装等效代码：QFP44,.5SQ,32
封装形状：SQUARE封装形式：FLATPACK
峰值回流温度（摄氏度）：NOT SPECIFIED电源：5 V
认证状态：Not Qualified座面最大高度：2.35 mm
子类别：DSP Peripherals最大压摆率：195 mA
最大供电电压：5.25 V最小供电电压：4.75 V
标称供电电压：5 V表面贴装：YES
技术：CMOS温度等级：COMMERCIAL
端子面层：Tin/Lead (Sn/Pb)端子形式：GULL WING
端子节距：0.8 mm端子位置：QUAD
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：10 mm
uPs/uCs/外围集成电路类型：DSP PERIPHERAL, DIGITAL FILTERBase Number Matches：1

TMC2242CKTC1 数据手册

 浏览型号TMC2242CKTC1的Datasheet PDF文件第2页浏览型号TMC2242CKTC1的Datasheet PDF文件第3页浏览型号TMC2242CKTC1的Datasheet PDF文件第4页浏览型号TMC2242CKTC1的Datasheet PDF文件第5页浏览型号TMC2242CKTC1的Datasheet PDF文件第6页浏览型号TMC2242CKTC1的Datasheet PDF文件第7页 
www.fairchildsemi.com  
TMC2242C  
Digital Half-Band Interpolating/Decimating Filter  
12-bit In/16-bit Out, 60 MHz  
Description  
Features  
The TMC2242C, a linear-phase low-pass half-band digital  
filter with fixed coefficients, can be used to halve or double  
the sampling rate of a digital signal. When used as a decimat-  
ing post-filter with a double-speed oversampling A/D con-  
verter, it greatly reduces the cost and complexity of the  
required analog antialiasing pre-filters. When used as an  
interpolating pre-filter with a double-speed oversampling  
D/A converter, it greatly reduces the complexity and cost of  
the necessary analog post-filter, particularly when its x/sin(x)  
correction filter is engaged.  
• Pin-compatible upgrade of TMC2242B  
• User-selectable interpolate d.c. gain, 0 dB or -6 dB  
• True unity d.c. gain in all “0 db” modes  
• 40 MSPS performance in equal-rate filter modes  
• 40 and 60 MSPS speed grades in all other modes  
• User-selectable 2:1 decimation, 1:2 interpolation, and  
equal-rate filter modes, plus unfiltered bypass/delay mode  
• Defeatable πx/sin(πx) compensation filter  
• Passband ripple <0.014 dB  
• Stopband rejection >56 dB  
• Dedicated 12-bit two’s complement or unsigned input bus  
• 16-bit two’s complement or unsigned output bus with  
user-selectable rounding to 8 to 16 effective bits  
• Programmable limiter prevents overflow or clips to  
CCIR601 levels  
The TMC2242C user selects the mode of operation (deci-  
mate, interpolate, equal-rate, bypass, x/sin(x))and rounding.  
The part can accept 12-bit two’s complement or unsigned  
data at up to 60 MHz and can output saturated two’s comple-  
ment or offset binary data rounded to from 8 to 16 bits.  
Within the speed grade I/O limit, the output sample rate may  
be 1/2, 1, or 2 times the input sample rate. Two-channel  
modes permit it to interpolate or to decimate two multi-  
• New double-latency modes match Y channel data flow to  
slower-sampled C and C data flows  
B
R
• New dual-channel interpolation and decimation for  
YUV422  
plexed data streams (such as video C and C ) jointly.  
B
R
Applications  
The filter response is flat to within ±0.014 dB up to 0.21f  
s
• Digital-to-Analog Converter Prefiltering with optional  
x/sinx correction  
(e.g. 5.75MHz at a 27MHz clock rate), with stopband attenu-  
ation greater than 56dB above 0.29f . Symmetric-coefficient  
s
• 1:2 interpolation  
• Analog-to-Digital Converter Postfiltering  
• 2:1 decimation  
filters such as the TMC2242C always have linear phase  
response. Half-band response is -6 dB.  
• Low-ripple low-pass (0 to 0.2 f ) filter  
s
Fabricated on an advanced submicron CMOS process, the  
TMC2242C is available in a 44-lead PLCC package. Perfor-  
mance is guaranteed from 0 to 70°C and over a power supply  
range of 4.75 to 5.25V.  
Block Diagram  
X/SIN(X)  
FILTER  
ROUND  
LIMIT  
ZERO  
INSERT  
FIR  
FILT  
SI  
11-0  
SO  
15-0  
DECIMATE  
SO  
3-0  
CONTROL  
65-2242C-01  
DEC INT SYNC TCO RND OE  
Rev. 1.0.0  
1234567...16

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