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CXA2006Q Dataheets PDF



Part Number CXA2006Q
Manufacturers Sony Corporation
Logo Sony Corporation
Description Digital CCD Camera Head Amplifier
Datasheet CXA2006Q DatasheetCXA2006Q Datasheet (PDF)

CXA2006Q Digital CCD Camera Head Amplifier Description The CXA2006Q is a bipolar IC developed as a head amplifier for digital CCD cameras. This IC provides the following functions: correlated double sampling, AGC for the CCD signal, GCA for the lowband chroma signal, AMP for high-band chroma and line signals, A/D sample and hold, blanking, A/D reference voltage, and an output driver. Features • High sensitivity made possible by a high-gain AGC amplifier • Blanking function provided for the purpo.

  CXA2006Q   CXA2006Q


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CXA2006Q Digital CCD Camera Head Amplifier Description The CXA2006Q is a bipolar IC developed as a head amplifier for digital CCD cameras. This IC provides the following functions: correlated double sampling, AGC for the CCD signal, GCA for the lowband chroma signal, AMP for high-band chroma and line signals, A/D sample and hold, blanking, A/D reference voltage, and an output driver. Features • High sensitivity made possible by a high-gain AGC amplifier • Blanking function provided for the purpose of calibrating the CCD output signal black level • Regulator output pin provided for A/D converter reference voltage • Built-in GCA and AMP for amplifying video signals (chroma and line signals) from external sources • Built-in sample-and-hold circuits (for camera signals and for video signals) required by external A/D converters Absolute Maximum Ratings • Supply voltage VCC • Operating temperature Topr • Storage temperature Tstg • Allowable power dissipation PD Operating Conditions Supply voltage Applications Digital CCD cameras Structure Bipolar silicon monolithic IC 32 pin QFP (Plastic) 14 –20 to +75 –65 to +150 640 V °C °C mW VCC1, 2, 3 4.5 to 5 V Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits. –1– E94X41B8X-PS CXA2006Q Block Diagram and Pin Configuration CCDLEVEL AGCCONT CLPDM GND1 VCC1 SHD SHP 24 23 22 21 20 19 18 17 N.C. PIN 25 AGCCLP 16 AGCCLP DIN 26 SH1 SH2 AGC SH3 LPF CAMSH BLK 15 CLPOB VCC2 27 COSCLP1 14 XRS N.C. 28 COSCLP2 REF BOTTOM REF TOP 13 PBLK LIN/CH 29 LIN/CH SW LIN CLP VI SW AMP CENTER BIAS VISH CH/CL DC CENTER BIAS GCA DRV C/V SW OFFSET SW 12 OFFSET GND2 30 11 VRT RFCONT 31 10 VRB PBRFC 32 MODE SWITCHING LOUTCLP 9 VCC3 1 2 3 4 5 6 7 8 VSHP CAM/VIDEO –2– LOUTCLP DRVOUT CH/CL PB/REC GND3 PS CXA2006Q Pin Description Pin No. 1 Symbol CAM /VIDEO 25µA 25µA 68k (VCC1, 2, 3 = 4.75V) Pin voltage Equivalent circuit Description Camera and video signal selector. Chroma signal and composite video signal selector. High-band chroma signal and low-band chroma signal selector. Power save mode. 2 PB/REC 1 VTH = 1.35V 3 CH/CL 127 1.35V 2 3 4 10k 24k 27k 4 PS 16.25k Sampling 5 VSHP VTH = 1.32V 5 127 1.32V Sample-and-hold pulse input for video. 10k Sampling 2mA 400µA 6.25k 6 23 30 GND3 GND23 GND2 GND Ground. 100µA 200µA 66k 1.1k 7 LOUTCLP Approx. 2V 7 4µA 1.27V 24k 16k 127 100k Capacitor connection for LOUTCLP which clamps the output minimum level in modes which pass the composite video signal. (Recommended value: 0.1µF) –3– CXA2006Q Pin No. Symbol Pin voltage Equivalent circuit Description 100µA 4mA 8 127 DRVOUT 8 • Camera mode (CAM) VRB – 200mV < black level < VRB + 300mV • Composite DRVOUT video mode (LIN) VRB + 100mV • Chroma mode (CH, CL) Center voltage = (VRT – VRB)/2 Driver output for A/D converter capable of DC coupling. Dynamic range = 2Vp-p 1.5mA 1.5mA 50 30k SW1 SW2 Mode 0 0 0 1 0 1 CH, CL CAM LIN — 2.1V SW1 SW2 10p 1 1 OFFSET 0: Closed 1: Open 9 20 27 VCC3 VCC1 VCC2 VCC Power supply. 2V regulator output. 13.75k 10 10 VRB 2.0V 2V 2k 10k 100µA Be sure to decouple this pin near the IC pins to prevent the oscillation and external noise when this pin is not used. (Recommended capacitor value: 4.7µF) 4V regulator output. 3.75k 4V 3k 1.1k 11 11 VRT 4.0V 20k 100µA 100µA 100µA Be sure to decouple this pin near the IC pins to prevent the oscillation and external noise when this pin is not used. (Recommended capacitor value: 4.7µF) –4– CXA2006Q Pin No. Symbol Pin voltage Equivalent circuit Description 66k 100µA 100µA 127 Controls the output offset during camera mode. 12 12 OFFSET 0 to 3V 24k 23k 1.1k 10k When 0V: less than (VRB – 200mV) When 3.0V: greater than (VRB + 300mV) 25µA 25µA 68k Camera signal preblanking pulse input. Active when Low only during camera mode. Calibrates the black level of the AGC output waveform. When PBLK is Low, the DRVOUT potential is forced to 2V. VTH = 1.35V 13 PBLK 13 Active: Low 24k 10k 127 1.35V 27k VTH = 2.16V 14 XRS 12.25k 200 2.16V 127 14 5p 100µA 2.5mA 200 10k Camera signal sample-and-hold pulse input. 10.25k Sampling VTH = 1.45V 15 CLPOB 15 1.1k 66k 1.45V 127 100µA 29k Active: Low 10k Clamp pulse used to clamp the optical black portion of the camera signal after it passes through the AGC amplifier. –5– CXA2006Q Pin No. Symbol Pin voltage Equivalent circuit Description 1.1k 2k 16 16 AGCCLP Approx. 3V 50µA 127 AGC clamp capacitor. (Recommended value: 0.1µF) 2k 20µA AGC gain control. 4k 20k 38k 18 AGCCONT 0 to 3.0V 18 127 10k 40µA 40µA 20µA 20.


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