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LM98513 Dataheets PDF



Part Number LM98513
Manufacturers National Semiconductor
Logo National Semiconductor
Description 50 MSPS Copier Signal Processor
Datasheet LM98513 DatasheetLM98513 Datasheet (PDF)

Rev 3.3 March 2005 LM98513 Dual-Channel, 10-Bit, 50 MSPS Copier Signal Processor LM98513 Dual-Channel, 10-Bit, 50 MSPS Copier Signal Processor General 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 differen.

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Rev 3.3 March 2005 LM98513 Dual-Channel, 10-Bit, 50 MSPS Copier Signal Processor LM98513 Dual-Channel, 10-Bit, 50 MSPS Copier Signal Processor General 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 68dB each. The fast, temperature stable, 8 bit programmable gain amplifiers are linear-in-dB 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 dB 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 dB 10-Bit 25 MSPS -68dB 415 mW (typical) 0 to 70oC 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 www.national.com Free Datasheet http://www.datasheet4u.com/ LM98513 Overall Chip Block Diagram VREFP PULSE CLPIN Timing Control Sample Sample VREFN Offset DAC Black Level Clamp / Averaging 10-Bit A/D Converter 50Mhz Digital Mulitplexor 10 VIN ODD Input Clamp S/H PGA BLKCLP MCLK SHD 10 VIN EVEN Input Clamp S/H Offset DAC Black Level Clamp / Averaging 10 10-Bit A/D Converter Digital Output Data PGA Serial Interface CE0 CE1 CLPIN PULSE SCLK SEN SDI Figure 1: Chip Block Diagram LM98513 TSSOP Chip Pin Out Diagram AV+ AV+ AGND VIN EVEN VCLP EVEN CE1 CE0 AOUT+ EVEN AOUT- EVEN BLKCLP VREFT EVEN SDI PULSE DV+ DGND Vin Test VREFT ODD SEN AOUT- ODD AOUT+ ODD VCLP ODD VIN ODD SDO AGND AV+ AV+ SCLK SHP 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 56 55 54 53 52 51 50 49 48 47 46 45 44 MCLK RESET VREFP EVEN VREFN EVEN VREFB EVEN OE DGND I/O DV+ I/O DOUT9 DOUT8 DOUT7 DOUT6 DOUT5 DV+ DGND DOUT4 DOUT3 DOUT2 DOUT1 DOUT0 DV+ I/O DGND I/O SHD NC VREFB ODD VREFN ODD VREFP ODD CLPIN LM98513 56 PIN TSSOP Figure 2: LM98513 Pin Out Diagram ©2005 National Semiconductor Corporation 2 VREFB VREFT 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 SDO www.national.com Free Datasheet http://www.datasheet4u.com/ LM98513 Ordering Information Commercial (0°C ≤ TA ≤ +70°C) LM98513 CCMT NS Package TSSOP Typical Application Circuit System Control Copier Control Serial Control Bus 56 MCLK 55 RESET 28 SHP 34 SHD 51 OE 29 CLPIN 13 BLKCLP PULSE 10 27 12 23 18 SDO SEN SCLK SDI 7 CE0 6 CE1 11 0.1µF VREFT EVEN 10uF VREFP EVEN 54 0.1µF 52 0.1µF VREFB EVEN VREFN EVEN 53 0.1µF 200−510Ω 17 0.1µF VREFT ODD 10uF VREFP ODD 30 0.1µF 32 0.1µF VREFB ODD VREFN ODD 31 0.1µF 200−510Ω 3V 49 DV+ I/O 50 DGND I/O AOUT+ EVEN 8 LM98513 AOUT- EVEN 9 10µF 0.1µF 3V 36 DV+ I/O 35 DGND I/O AOUT+ ODD 20 AOUT- ODD 19 10µF 0.1µF CLAMP VOLTAGE 5 VCLP EVEN 10µF 0.1µF CLAMP VOLTAGE AV+ 26 21 VCLP ODD AV+ 25 AGND 24 3V 10µF 0.1µF 3V 0.1µF 10µF 43 DV+ 10µF 0.1µF AV+ 1 AV+ 2 AGND 3 VIN TEST VIN EVEN VIN ODD 3V 42 DGND 3V 0.1µF 10µF 14 DV+ 10µF 0.1µF 15 DGND D9 D8 D7 D6 D5 D4 D3 D2 D1 16 4 22 48 47 46 45 44 41 40 39 38 37 0.1µF 0.1µF 0.1µF Video Inputs Digital Video Bus Figure 3: Typical Application Circuit Diagram ©2005 National Semiconductor Corporation 3 D0 www.national.com Free Datasheet http://www.datasheet4u.com/ LM98513 Pin Descriptions Pin 1 Name AV+ I/O I Typ P Res Description +3.3 Volt power supply for the analog circuits. Bypass supply each supply pin with 0.1µF and 10µF capacitors in parallel. +3.3 Volt power supply for the analog circuits. Bypass supply each supply pin with 0.1µF and 10µF capacitors in parallel. Analog ground return. Even channel analog input signal. AC-couple to imager output through a 0.1µF capacitor. Input Clamp Voltage (1.5V). Normally bypassed with a 0.1µF, and a 10µF capacitor to ground. An external reference voltage may be applied to this pin. MSB of Chi.


STK1160 LM98513 40T03GH


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