TMC2242BKTC ,Digital Half-Band Interpolating/Decimating Filter 12-bit In/16-bit Out 60MHzBlock DiagramOE12 121612 55 Tap 16 16SI 12 Round11-0FIR andSO15-0Filter LimitInterpolate 0-1-0-1CLK ..
TMC2242BR2C ,Digital Half-Band Interpolating/Decimating Filter 12-bit In/16-bit Out 60MHzFeatures• TMC2242A and TMC2242B are pin-compatible with • Single +5 Volt power supply operationTMC2 ..
TMC2246AH5C ,Image Filter 11 x 10 bit/ 60 MHzApplications• 60 MHz computation rate • Fast pixel interpolation• 60 MHz data and coefficient input ..
TMC2246AKEC ,Image FilterApplications• 60 MHz computation rate • Fast pixel interpolation• 60 MHz data and coefficient input ..
TMC2249AH5C ,Digital Mixer 12 x 12 Bit/ 60 MHzApplications• 60 MHz input and computation rate • Video switching• Two 12-bit multipliers • Image m ..
TMC2249AKEC ,Digital MixerApplications• 60 MHz input and computation rate • Video switching• Two 12-bit multipliers • Image m ..
TOP258YN , Enhanced EcoSmart®, Integrated Off-Line Switcher with Advanced Feature Set and Extended Power Range
TOP259EN , Enhanced EcoSmart, Integrated Off-Line Switcher with Advanced Feature Set and Extended Power Range
TOP261EN , Enhanced EcoSmart, Integrated Off-Line Switcher with Advanced Feature Set and Extended Power Range
TORX141PL ,TOSLINK Fiberoptic Devices
TORX173 ,FIBER OPTIC RECEIVING MODULE FOR DIGITAL AUDIO EQUIPMENT
TORX178S ,FIBER OPTIC RECEIVING MODULE FOR DIGITAL AUDIO INTERFACE
TMC2242AR2C-TMC2242AR2C1-TMC2242AR2C2-TMC2242BKTC-TMC2242BR2C
Digital Half-Band Interpolating/Decimating Filter 12-bit In/16-bit Out 60MHz
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 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
DescriptionThe 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.
