LM98714 Series
3 Ch 16-Bit 45 MSPS Digital Copier AFE w/ Integrated CCD/CIS Sensor Timing Generator & LVDS Output
Manufacturer: Texas Instruments
Catalog
3 Ch 16-Bit 45 MSPS Digital Copier AFE w/ Integrated CCD/CIS Sensor Timing Generator & LVDS Output
Key Features
• LVDS/CMOS OutputsLVDS/CMOS Pixel Rate Input Clock or ADC Input ClockCDS or S/H Processing for CCD or CIS SensorsIndependent Gain/Offset Correction for Each ChannelDigital Black Level Correction Loop for Each ChannelProgrammable Input Clamp VoltageFlexible CCD/CIS Sensor Timing GeneratorKey SpecificationsMaximum Input Level: 1.2 or 2.4 Volt Modes(Both with + or – Polarity Option)ADC Resolution: 16-BitADC Sampling Rate: 45 MSPSINL: ±23 LSB (Typ)Channel Sampling Rate: 15/22.5/30 MSPSPGA Gain Steps: 256 StepsPGA Gain Range: 0.7 to 7.84xAnalog DAC Resolution: ±9 BitsAnalog DAC Range: ±300 mV or ±600 mVDigital DAC Resolution: ±6 BitsDigital DAC Range: –1024 LSB to + 1008 LSBSNR: –74dB (at 0 dB PGA Gain)Power Dissipation: 505 mW (LVDS) 610 mW (CMOS)Operating Temp: 0 to 70°CSupply Voltage: 3.3 V Nominal (3.0 V to 3.6 V Range)LVDS/CMOS OutputsLVDS/CMOS Pixel Rate Input Clock or ADC Input ClockCDS or S/H Processing for CCD or CIS SensorsIndependent Gain/Offset Correction for Each ChannelDigital Black Level Correction Loop for Each ChannelProgrammable Input Clamp VoltageFlexible CCD/CIS Sensor Timing GeneratorKey SpecificationsMaximum Input Level: 1.2 or 2.4 Volt Modes(Both with + or – Polarity Option)ADC Resolution: 16-BitADC Sampling Rate: 45 MSPSINL: ±23 LSB (Typ)Channel Sampling Rate: 15/22.5/30 MSPSPGA Gain Steps: 256 StepsPGA Gain Range: 0.7 to 7.84xAnalog DAC Resolution: ±9 BitsAnalog DAC Range: ±300 mV or ±600 mVDigital DAC Resolution: ±6 BitsDigital DAC Range: –1024 LSB to + 1008 LSBSNR: –74dB (at 0 dB PGA Gain)Power Dissipation: 505 mW (LVDS) 610 mW (CMOS)Operating Temp: 0 to 70°CSupply Voltage: 3.3 V Nominal (3.0 V to 3.6 V Range)
Description
AI
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. High-speed 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 45 MHz 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.
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. High-speed 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 45 MHz 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.
