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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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TMC2242AR2C bảng dữ liệu(PDF) 1 Page - Cadeka Microcircuits LLC. |
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TMC2242AR2C bảng dữ liệu(HTML) 1 Page - Cadeka Microcircuits LLC. |
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1 / 16 page  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 fs • 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 • 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 SI11-0 CLK DEC INT SYNC 12 12 12 12 16 16 16 SO15-0 TCO RND2-0 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 TMC2242A/TMC2242B Digital Half-Band Interpolating/Decimating Filter 12-bit In/16-bit Out, 60 MHz Rev. 1.2.0 www.cadeka.com |
Số phần tương tự - TMC2242AR2C |
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Mô tả tương tự - TMC2242AR2C |
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