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| Preliminary KA7307D GENERAL DESCRIPTION The KA7307 is a bipolar monolithic integrated circuit for CCD Color Video Camera, and then if provides functions of Correlated Double Sampling, Automatic Gain Control, Window Function, and Iris Amplifier Gain Control. 20 - SOP - 300 CDS/AGC FEATURES . Correlated Double Sampling (CDS) . Automatic Gain Control (AGC) . Low-pass-filter and Sample-and-Hold circuit after AGC for external A/D converters . Window Function . Iris Amplifer Gain Control . + 5V Single power supply . Low power < 330mW ORERING INFORMATION Device KA7307D Package 20-SOP-300 Operating Temperature - 20C ~ + 75 C BLOCK DIAGRAM DGND1 DGND2 11 10 XSHD DVCC XSHP PBLK CLP4 CLP1 WND 20 19 18 17 16 15 14 13 12 IRISCAP COMP1 CLP GC1 IRIS CONT BLK WND + COMP2 + CLP1 AGCCAP SH1 SH2 CLP PBLK SH3 AGC LPF AGC S/H BLK XRS XSHP XSHD 1 2 DATA IN 3 4 5 6 7 IRIS OUT 8 XRS 9 AGC CONT AGC CAP PG IN IRIS CAP IRIS CONT AGC OUT AGND AVCC VID-97-D002 February 1997 1 Preliminary KA7307D PIN DESCRIPTIONS No. 1 2 3 4 5 CDS/AGC Symbol PG IN DATA IN AVCC AGC CONT IRIS CONT I/O I I I I I Pin Voltage Black Level 2.3V ~ 2.9V ( Typ. : 2.6V ) Description CCD Signal Input Typ. : 5.0V OV ~ 5V GAIN CONTROL Black Level Supply Voltage AGC Gain Control IRIS Gain Control A Pin is used to attach IRIS Clamp Capacitor IRIS Signal Output Signal Max. : > 2.0Vp-p A Pin is used to attach IRIS Clamp Capacitor AGC Signal Output Signal Max. : > 2.0Vp-p Analog Ground Digital Ground 2 H : > 4V L : < 1V H : > 4V L : < 1V Sample - and - Hold Sig. Input ( Active Low ) High Speed Pulse Input Pin for WINDOW ( Active Low ) Pre - Blanking Pulse 6 IRIS CAP O 2.05V ~ 2.55V ( Typ. : 2.27V ) Black Level 1.2V ~ 1.7V ( Typ. : 1.45V ) Black Level 2.15V ~ 2.65V ( Typ. : 2.37V ) Black Level 1.2V ~ 1.7V ( Typ. 1.45V ) 7 IRIS OUT O 8 AGC CAP O 9 AGC OUT O 10 11 12 AGND DGND2 XRS O O I - 13 WND I 14 PBLK I Input Pin ( Active Low ) H : > 4V L : < 1V Clamping Pulse 1 Input Pin ( Active High ) Clamping Pulse 4 15 CLP1 I 16 17 18 19 20 CLP4 DVCC XSHD XSHP DGND1 I Input Pin ( Active High ) I I I O Typ. : 5.0V H : > 4V L : < 1V Supply Voltage High Speed Pulse Input Pin for Sampling / Hold ( Active Low ) Digital Ground 1 VID-97-D002 February 1997 2 Preliminary KA7307D ABSOLUTE MAXIMUM RATINGS( Vcc = 5.0 V , Ta = 25C) Characteristics Supply Voltage Input Voltage Power Dissipation Operating Temperature Storage Temperature Symbol Vcc Vi Pd Topr Tstg Value 7 4.75 ~ 5.25 530 - 20 ~ + 75 - 65 ~ + 150 CDS/AGC Unit V V mW C C ELECTRICAL CHARACTERISTICS( Vcc = 5.0 V , Ta = 25C) Characteristics Supply Current CONT MIN GC1 CONT MAX Iris out maximum voltage swing CG1 Amp. CMRR CONT MIN AGC CONT MAX AGC Amp. CMRR AGC out maximum voltage swing AGC1 MAX CMRA ADR GC1C MAX CDR CMR1 AGC1 MIN Symbol ICC GC1C MIN Test Condition ALL PIN : OPEN Iris out / Data in Iris CONT = 0.0V, WND >4.0V Iris out / Data in Iris CONT = Vcc, WND > 4.0V Dta in = 400mVp - p GC1 Gain max. 15.75KHz AGC out / Data in AGC CONT = 0.0V AGC out / Data in AGC CONT = Vcc 15.75KHz Dta in = 100mVp p AGC Gain max. - Min 23 - Typ 41 -6 Max 59 -4 Unit mA dB 14 2.0 - 18 2.5 - 50 6 - 36 8 dB V dB dB 38 2.0 41 - 50 2.5 - 36 - dB dB V VID-97-D002 February 1997 3 Preliminary KA7307D OPERATING PRINCIPLES & METHODE CDS/AGC CCD OUT PUT SIGNAL SAMPLE & HOLD GC1 CLAMP & BLK IRIS OUT XSHP XSHD IRIS CONT CLP1 PBLK 1. SIGNAL FORMAT Precharge Level CCD OUTPUT SIGNAL Data Level Reset Noise Level Data Level 0 ~ 600mVpp XSHP ( Precharge Level S/H Pulse ) H>4V L<1V XSHD ( Data Level S/H Pulse ) H>4V L<1V IRIS OUT AGC OUT OUT PUT Level 0 ~ 2.4Vpp VID-97-D002 February 1997 4 Preliminary KA7307D 2. TIMING CHART FOR TESTING CDS/AGC DATA IN Input Signal 20 ~ 600mVpp 7us 2us CLP1. CLP4 H>4V L<1V H>4V L<1V PBLK. WND Output Signal 10mVpp ~ 2.9Vpp OUT PUT ( IRIS OUT AGC OUT ) 16us 32us 16us 32us VID-97-D002 February 1997 5 Preliminary KA7307D CHARACTERISTICS GRAPH CDS/AGC ( Standard Control Characteristics ; ( Vcc = 5.0 V , Ta = 25C ) Input Control Voltage : 0 ~ 5V Output Gain : - 6dB ~ 18dB 30 IRIS OUT / DATA IN GAIN [ dB ] 20 10 0 -10 0 1 2 3 4 5 IRIS CONT VOLTAGE [ V ] Input Control Voltage : 0 ~ 5V Output Gain : 6dB ~ 41dB 50 AGC OUT / DATA IN GAIN [ dB ] 40 30 20 10 0 0 1 2 3 4 5 AGC CONT VOLTAGE [ V ] VID-97-D002 February 1997 6 Preliminary KA7307D TEST CIRCUIT CDS/AGC A A A + 10uF A A A A SL DGND1 XSHP SR SW8 19 SL XSHD SR DVCC SW7 18 SL CLP4 SR SW6 16 SL CLP1 SR PBLK SW5 15 SL SW4 14 SR WND SL XRS SR DGND2 AGC OUT 20 17 13 12 11 IRISCAP COMP1 CLP GC1 IRIS CONT CLP1 AGCCAP BLK WND + COMP2 + SH1 XSHP XSHD SH2 CLP SH3 AGC LPF AGC S/H XRS BLK 1 PG IN 0.1uF 0.1uF V 2 DATA IN AVCC V 3 A 4 AGC CONT A 5 IRIS CONT A 6 IRIS CAP 0.1uF V 7 IRIS OUT 0.1uF 8 AGC CAP V 9 10 AGND SR SL A SR 10uF SL SW1 SW2 + - VID-97-D002 February 1997 7 Preliminary KA7307D APPLICATION CIRCUIT CDS/AGC TIMMING GENERATOR KS7213 KA7307D 0.1 uF 1 2 0.1 uF 3 5.0 V 4 0~5V 5 6 7 8 0.1 uF 9 10 CCD I. C PG IN DATA IN AVCC AGC CONT IRIS CON IRIS CAP IRIS OUT AGC CAP AGC OUT AGND DGND1 XSHP XSHD DVCC CLP4 CLP1 PBLK WND XRS DGND2 20 19 18 17 16 15 14 13 5.0 V 0.1uF DL 12 11 0.1 uF IRIS DET. 10 bit D/A DCP KS7306 Video Out BUF & CLAMP MICOM 10 bit D/A PACKAGE DIMENSION VID-97-D002 February 1997 8 Preliminary KA7307D CDS/AGC 20-SOP-300 unit: mm VID-97-D002 February 1997 9 |
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