AN2050FB CCD Monochrome Video Camera Signal Processor IC ■ Overview Unit:mm The AN2050FB is an integrated circuit specified to the monochrome CCD image element which is employed in the monitoring video cameras, door phones, TV telephone sets, etc. The high frequency block and power block that are composed of 3-chip of DS signal processing, AGC. Γ compensating and NTSC output so far, are integrated into one chip to offer low cost. 10.0±0.3 23 0.9±0.25 0.1±0.1 11 0.15+– 0.1 0.05 0.9±0.25 1 ■ Features 2.0±0.2 12 44 • Frequency characteristics:10MHz (icompatible with the CCD image element of 330,000 pixels) • AGC range:18dB (improved SN ratio) • Operating supply voltage range:4.5V to 5.3V (typ. 5V) • Power consumption:typ. 225mW 12.3±0.4 0.35±0.1 10.0±0.3 22 0.8 33 34 12.3±0.4 (0.55) 44-Pin QUADFLAT Package (QFP044-P-1010) ■ Block Diagram VCC (DS) 34 37 33 Clamp 35 32 31 GND (DS) ALC DET 27 24 4 21 5 + Y·Γ Cont Flicker 6 22 25 – AGC Det. Clamp ALC Amp ALCG 28 AGC WHD MIX 30 38 26 Clamp Amp S.H 29 AGC OP 20 AP Amp Vref DC F·B Y·Γ 19 17 23 36 DC F··B AP Clamp 16 AP Clip 18 Y.Γ Clamp 8 39 41 – + Chara. Mix Mix C.BLK Mix Chara. SW Amp Low Clip Chara. Clamp DC F·B H.Clip 40 42 43 – + Pulse Sep. Vref Video out V.Sync Mix 13 12 44 1 2 15 3 GND 10 GND 9 14 VCC (Video) 11 7 ■ Absolute Maximum Ratings (Ta=25˚C) Parameter Symbol Rating Unit Supply voltage VCC 5.5 V Supply current ICC 54 mA mW Power dissipation PD 280 Operating ambient temperature Topr –20 to +75 ˚C Storage temperature Tstg –55 to +125 ˚C ■ Recommended Operating Range (Ta=25˚C) Parameter Operating supply voltage range Symbol Range VCC 4.5V to 5.3V ■ Electrical Characteristics (Ta=25˚C) Parameter Symbol Condition min typ max Unit OB control (1) VOB1 VCC=5V 35 55 75 mVPP OB control (2) VOB2 VCC=5V –85 –65 –45 mVPP AGC amp gain (1) GAGC1 VCC=5V 130 170 210 mVPP AGC amp gain (2) GAGC2 VCC=5V 16 19 22 dB ALC DET output VALC VCC=5V 500 600 700 mVPP Γ circuit gain (1) GΓ1 VCC=5V 660 800 940 mVPP Γ circuit gain (2) GΓ2 VCC=5V AGC DET output VAGC/DET VCC=5V 400 480 AP clip (1) GCL1 VCC=5V 0.9 1.1 AP clip (2) GCL2 VCC=5V YΓ amp gain GYΓ VCC=5V 1.1 1.3 1.5 VPP I25 VCC=5V 26.5 31 35.5 mA Supply current (1) 550 mVPP 560 mVPP 1.4 VPP –10 dB I33 VCC=5V 9.5 14 18.5 mA CP1 pulse separation level VCP1 VCC=5V 3.4 3.8 4.2 V WHD pulse separation level VWHD VCC=5V 2.15 2.55 2.95 V WBL pulse separation level VWBL VCC=5V 0.4 0.8 1.2 V CP2 pulse separation level VCP2 VCC=5V 3.1 3.5 3.9 V BLK pulse separation level VBLK VCC=5V 0.6 1 1.4 V Supply current (2) ■ Application Circuit 5V Vref (–1.8V) AGC Vref 1kΩ + – 1kΩ LPF 5V 1kΩ 47µF Vcc (DS) CP 34 SP3 33 47µF 35 32 31 29 26 Clamp 37 S.H Clamp R Amp + 28 27 24 4 21 5 AGC Det AGC + – WHD MIX 30 ALC DET 38 ALC Amp ALCT Flicker 6 22 – Y·Γ Cont Clamp 1.6MΩ AGC Ope-amp. 5V PED Setting DL 1kB 10kΩ 0.047µF 100pF Sig IN – 12kΩ – + 4.7µF 1.2kΩ 33kΩ 4.7kΩ 390kΩ 10kB – + 30kΩ 4.7kΩ + DC F·B Y·Γ 23 39 0.047µF Vref 5V DC F·B 36 DS 5V 3kΩ to 6kΩ Manual 10kB 22kΩ Auto 0.047µF 9V 2.4kΩ – 20 + 19 DL AP Amp. 0.047µF 17 5V AP Clamp 16 AP Clip 18 Y·Γ Clamp 8 0.1µF 5V ALC Op-amp. 41 – + Vref 40 42 – 43 + For Iris Driving Buffer 44 Pulse Sep. 1 2 Video Out Vref 15 3 13 V SYNC MIX 10 CP1 10kΩ C. BLK MIX Chara. SW Amp Low Clip Chara. Clamp DC F·B 9 PED 11 5V 5V 7 0.047µF 14 VCC (Video) 25 VCC 4kΩ 5V BLK Sig out CP1 WHD 10kΩ WBLK MIX 12 CP2 WHD Chara. MIX 5V 47µF – 10kΩ H Clip 12kΩ + CP2 BLK 0.047µF ALC Op-amp. WBLK 5V 0V Sync ■ Pin Descriptions Pin name Pin No. 1 2 Pulse input 1 Pulse input 2 3 GND 4 Typ. waveform 5V 2.5V 5V 3.3V 1.6V Pin name Pin No. Typ. waveform CP2 23 DC control 24 γ input BLK CP1 WHD WBL 800mVPP 1.8V 25 VCC AGC DET 26 Flicker control 5 AGC op. amp. input – 27 AGC output 6 AGC op. amp. output 28 AGC control 7 DC control 29 AGC input 8 Yγ input 30 PED setting 9 PED 31 DS amp. output 10 GND 32 DC output 11 Character input 33 VCC (DS) 12 SYNC input 34 Clamp pulse input 5V 0V 13 Video output 35 Sample hold pulse input 5V 0V 14 VCC (Video) 36 GND (DS) 15 Vref DC 1.8V 37 DS input 16 Aperture input 2.5V 38 ALC DET 17 Aperture amp. output 39 DC control 18 Aperture clip 40 ALC op. amp. output 19 Aperture amp. input + 41 ALC op. amp. input – 20 Aperture amp. input – 42 ALC op. amp. input – 21 γ control 43 ALC op. amp. input + 22 γ output 44 ALC op. amp. output 480mVPP 320mVPP 2.5V 1.8V Clamp IN Open 1.8V 800mVPP 250mVPP 1.8V 250mVPP 1.8V 100ns 100ns 2VPP 350mVPP 1.8V Reset pulse Signal 580mVPP