interpolatin LOGIC Devices Inc., interpolatin Datasheet
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Page 1
... LF2242 as a decimating post-filter with an A/D converter and by sampling the signal at twice the rate needed. Likewise, by using the LF2242 as an interpolating pre-filter with a D/A converter, the corresponding analog reconstruction post-filter circuitry can be simplified. The coefficients of the LF2242 are fixed, and the only user programming ...
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... For interpolation (INT = LOW), input data should be presented at the first ris- ing edge of CLK for which SYNC is LOW and then at every alternate rising edge of CLK thereafter. SYNC is inactive if DEC and INT are equal (pass-through mode). 12/16-bit Half-Band Interpolating/ F ILTER 0.2 0.3 0.4 0.5 ...
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... R • • • • • • 3 12/16-bit Half-Band Interpolating/ Decimating Digital Filter RND — Rounding Control 2-0 The rounding control inputs set the posi- tion of the effective LSB of the output data by adding a rounding bit to the internal bit position that is one below that speci- fied by RND ...
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... Output Leakage Current Current, Dynamic CC1 Current, Quiescent CC2 CC C Input Capacitance IN C Output Capacitance OUT 12/16-bit Half-Band Interpolating/ Temperature Range (Ambient) 0°C to +70°C -40°C to +85°C Test Condition V = Min –2 Min 4 (Note 3) Ground V ...
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... S SO 15-0 OE (0°C to +70°C) Notes 9, 10 (ns (INT = DEC) HROUGH ODE N HIGH IMPEDANCE t t DIS ENA 5 12/16-bit Half-Band Interpolating/ Decimating Digital Filter LF2242– 33 Min Max N+1 Video Imaging Products 08/16/2000–LDS.2242-K ...
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... SYNC WITCHING AVEFORMS ECIMATE 1 2 CLK SYNC SI N N+1 11 15-0 OE 12/16-bit Half-Band Interpolating/ M (INT = 0, DEC = 1) ODE N HIGH IMPEDANCE DIS ENA M (INT = 1, DEC = 0) ODE N HIGH IMPEDANCE t t DIS ENA ...
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... Tested with all inputs within 0 Ground, no load These parameters are guaranteed but not 100% tested. 12/16-bit Half-Band Interpolating specifications are tested with input transition times less than 3 ns, output reference levels of 1.5 V (except t test), and input levels of nominally DIS ...
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... Plastic J-Lead Chip Carrier (J1) Speed 0°C to +70°C — C OMMERCIAL 33 ns LF2242JC33 25 ns LF2242JC25 –40°C to +85°C — C OMMERCIAL 12/16-bit Half-Band Interpolating/ 44-pin GND ...