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參數(shù)資料
| 型號： | TMC2242BKTC |
| 廠商： | RAYTHEON SEMICONDUCTOR |
| 元件分類： | 數(shù)字信號處理外設 |
| 英文描述： | Digital Half-Band Interpolating/Decimating Filter 12-bit In/16-bit Out, 60 MHz |
| 中文描述： | 12-BIT, DSP-DIGITAL FILTER, PQFP44 |
| 封裝： | MQFP-44 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 86K |
| 代理商： | TMC2242BKTC |
www.fairchildsemi.com
Features
TMC2242A and TMC2242B are pin-compatible with
TMC2242
User selectable interpolate gain, -6 dB or 0 dB (2242B)
30, 40 and 60 MHz speed grades
User selectable 2:1 decimation, 1:2 interpolation, and
equal-rate filter modes
Passband ripple <
±
0.01 dB
Stopband rejection 59.4 dB from 0.28 to 0.50 x f
Cascading two TMC2242A or TMC2242B meets
CCIR 601 low-pass filter requirement
Dedicated 12-bit 2's complement input data port and
16-bit output data port with user-selectable rounding from
9 to 16 bits
Two's complement or offset binary output format
Built-in limiter prevents overflow
s
Single +5 Volt power supply operation
Small 44-Lead PLCC and 44-Lead MQFP
Applications
Low-cost video filtering
Chrominance bandwidth limiter
Simple, inexpensive video D/A post-filters
Reduced cost and complexity for A/D anti-aliasing filters
High-performance digital low-pass filters
Digital waveform reconstruction post-filtering
Telecommunications
Direct digital synthesis
Radar
Description
The TMC2242A and TMC2242B are fixed-coefficient lin-
ear-phase half-band (low-pass) digital filters. They can be
used to halve or double the sampling rate of a digital signal.
When used as a decimating post-filter with a double-speed
oversampling A/D converter, they greatly reduce the cost and
complexity of anti-aliasing filters required ahead of the A/D
converter. When used as an interpolating pre-filter with a
double-speed oversampling D/A converter, the TMC2242A
and TMC2242B significantly reduce the design complexity
and production cost of reconstruction filters used on D/A
outputs.
The TMC2242A and TMC2242B user selects the mode of
operation (decimate, interpolate, or equal-rate) and round-
ing. The TMC2242A and TMC2242B accept 12-bit 2's com-
plement data at up to 60 MHz and output saturated
(overflow-protected) 2's complement or offset binary data
rounded to from 9 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.
Block Diagram
SI
11-0
CLK
DEC
INT
SYNC
12
12
12
12
16
16
16
SO
15-0
TCO
RND
2-0
55 Tap
FIR
Filter
Round
and
Limit
3
Control
OE
Interpolate 0-1-0-1
Decimate, Equal Rate 1-1-1-1
65-2242A-01
T MC2242A/T MC2242B
Digital Half-Band Interpolating/Dec imating Filter
12-bit In/16-bit Out, 60 MHz
Rev. 1.2.0
相關PDF資料 |
PDF描述 |
|---|---|
| TMC2242BKTC1 | Digital Half-Band Interpolating/Decimating Filter 12-bit In/16-bit Out, 60 MHz |
| TMC2242BKTC2 | Digital Half-Band Interpolating/Decimating Filter 12-bit In/16-bit Out, 60 MHz |
| TMC2242AR2C1 | Digital Half-Band Interpolating/Decimating Filter 12-bit In/16-bit Out, 60 MHz |
| TMC2242AR2C2 | Digital Half-Band Interpolating/Decimating Filter 12-bit In/16-bit Out, 60 MHz |
| TMC2242BR2C1 | ECONOLINE: ROM - Micro Size SIP4 Package- 3kVDC Isolation- Industry Standard Pinout- UL94V-0 Package Material- Custom Solutions Available- Cost Effective- Efficiency to 85% |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TMC2242BKTC1 | 功能描述:視頻 IC Interp/Decim Filter Digital HB 12B/16B RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| TMC2242BKTC2 | 功能描述:視頻 IC Interp/Decim Filter Digital HB 12B/16B RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| TMC2242BR2C | 功能描述:視頻 IC Interp/Decim Filter Digital HB 12B/16B RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| TMC2242BR2C1 | 功能描述:視頻 IC Interp/Decim Filter Digital HB 12B/16B RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| TMC2242BR2C2 | 功能描述:視頻 IC RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
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