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LM98725,pdf datasheet (3 Chann
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格式:rar |
大小:555 |
2009-10-12
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The LM98725 is a fully integrated, high performance 16-Bit,
81 MSPS signal processing solution for digital color copiers,
scanners, and other image processing applications. Highspeed
signal throughput is achieved with an innovative architecture
utilizing Correlated Double Sampling (CDS), typically
employed with CCD arrays, or Sample and Hold (S/H) inputs
(for higher speed CCD or CMOS image sensors). The signal
paths utilize 8 bit Programmable Gain Amplifiers (PGA), a
+/-9-Bit offset correction DAC and independently controlled
Digital Black Level correction loops for each input. The PGA
and offset DAC are programmed independently allowing
unique values of gain and offset for each of the three analog
inputs. The signals are then routed to a 81MHz high performance
analog-to-digital converter (ADC). The fully differential
processing channel shows exceptional noise immunity, having
a very low noise floor of -74dB. The 16-bit ADC has
excellent dynamic performance making the LM98725 transparent
in the image reproduction chain.
81 MSPS signal processing solution for digital color copiers,
scanners, and other image processing applications. Highspeed
signal throughput is achieved with an innovative architecture
utilizing Correlated Double Sampling (CDS), typically
employed with CCD arrays, or Sample and Hold (S/H) inputs
(for higher speed CCD or CMOS image sensors). The signal
paths utilize 8 bit Programmable Gain Amplifiers (PGA), a
+/-9-Bit offset correction DAC and independently controlled
Digital Black Level correction loops for each input. The PGA
and offset DAC are programmed independently allowing
unique values of gain and offset for each of the three analog
inputs. The signals are then routed to a 81MHz high performance
analog-to-digital converter (ADC). The fully differential
processing channel shows exceptional noise immunity, having
a very low noise floor of -74dB. The 16-bit ADC has
excellent dynamic performance making the LM98725 transparent
in the image reproduction chain.
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