LM98513 Datasheet | National Semiconductor

Description The LM98513 is a fully integrated, high performance 10-Bit, 50 MSPS CCD signal processing solution for digital copiers and scanners. High-speed signal throughput is achieved with an innovative 2-channel architecture including sample and hold, programmable gain and offset correction and analog-to-digital conversion. The fully differential processing channels show exceptional noise immunity, having a very low noise floor of 68d B each. The fast, temperature stable, 8 bit programmable gain amplifiers are linear-in-d B which enables fine adjustments to the signal gain and minimizes cross-channel gain error caused by mismatch in the CCD output circuitry. The independently controlled offset correction circuits utilize 8-bit offset DACs to correct signal and cross-channel offsets. The 10bit analog-to-digital converters have excellent dynamic performance making the LM98513 transparent in the image reproduction chain. Features 3 Volt Single Power Supply Low Power CMOS Design 4 Wire Serial Interface 2.5 Volt Data Output Levels Dual Inputs with Symmetrical Architecture Even/Odd Channel Offset Correction Digital Black Level Clamp Programmable Input Clamp Key Specifications Maximum Input Level Input Sampling Rate PGA Gain Steps PGA Gain Range ADC Resolution ADC Sampling Rate Noise Floor 0.0 d B Gain,1.5 Volt input Power Dissipation AV+=DV+=DV+I/O=3.0V Operating Temp 1.5 Volt peak-peak 25 MSPS 256 Steps 0.0 - 20.0 d B 10-Bit 25 MSPS -68d B 415 m W (typical) 0 to 70o C Applications Digital Plain Paper Copiers Multi-Function Printers Facsimile Equipment Desktop Publishing Flatbed or Handheld Color Scanners High-speed Document Scanner System Block Diagram CCD/CIS Sensor LM98513 10 Imager Processor Sensor Drivers Timing Generator Motor Controllers Microcontroller ©2005 National Semiconductor Corporation .national. Free Datasheet http://../ Overall Chip Block Diagram VREFP PULSE CLPIN Timing Control Sample Sample VREFN Offset DAC Black Level Clamp /...