The LM98714 is a fully integrated, high performance 16-Bit,
45 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 Contact Image Sensors and 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 inputs. The signals are then routed to a 45MHz
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
LM98714 transparent in the image reproduction chain.