HA11579 P-I-P Analog Signal Processing LSI (NTSC)

Transcription

1 ADE (Z) P-I-P Analog Signal Processing LSI (NTSC) Rev. Sep. 99 The is a main/sub Picture analog signal processing LSI for NTSC suited PIP systems. The has built-in the Band Pass Filter BPF and Low Pass Filter LPF with automatically adjustment function, and can reduce ex t e rnal components. F u rt h e rm o re, the has been designed to also handle Y and C inputs (S input). A PIP system can be constructed from this IC and two other ICs (the HD49420FS and the HM546), that is, from a total of ICs. Functions Features An NTSC PIP system can be constructed from this and two other (the HD49420FS and the HM546) ICs. As compared with earlier PIP chip sets, a large reduction in the number of external components can be achieved. Can handle S inputs A black level compensation circuit is built into the sub-picture processing circuit, and such problems as black lifting are eliminated. A color signal level compensation circuit is built into the sub-picture processing circuit, and the sub-picture color signal level is always stable. Main and sub-picture chroma signal processing Main and sub-picture sync separation Built-in automatically adjustment filter Built-in two function video switch Main input Sub input PIP output. Y/C Y/C Y/C 2. Y/C Y+C Y/C

2 CYIN S-MASK S-SYNCOUT S-BGP S-H-SYNC M-H-SYNC M-BGP (NC) BLP M-MASK M-SYNCOUT NSSW Block Diagram MYIN (NC) 2 MCIN 40 M-DET CCIN 4 9 M-DET2 5 6 Sub H-SYNC Sep. 8 YADJ 7 S-YOUT Reference voltage regurator Main st BPA 2nd BPA 6 CSW Sub st BPA 2nd BPA HPF 5 S-ACC 4 BPAOUT FSC-CO + TINT FSCO 0 TINT DEMO-IN Filter auto ADJ R-Y, B-Y Demo BPF 2 RYOUT C Main/Sub SW + AMP M-KILL PIP-Y-OUT B-DET OUTC Sub-BPA Y-Peak 29 BYADJ S-YIN 5 PIP-C-OUT M-APC 4 0 RYADJ Black level control Y Main/Sub SW + AMP PEAK CO2 BYOUT CO 2 S-CIN 9 Y-Amp REG 4 S-DET Main/Sub SYNC DET A-ADJ 8 LPF Main/Sub SW 7 H-ADJ Main H-SYNC Sep. M-ACC H-OUT 42 S-DET2

3 Absolute Maximum Ratings (Ta = 25 C) Item Symbol alue Units Notes Power supply voltage MAX 7 Power dissipation PT 850 mw Storage temperature Tstg 40 to +50 C Operating temperature Topr 0 to +75 C Note: Operating power supply voltage range: 4.75 to 5.25 Electrical Characteristics (Ta = 25 C, = 5 ) Test Conditions Application Terminal Item Symbol Min Typ Max Units Supply current ICC ma Input DC level (Y) EIY Sync peak value Input DC level (C) EIC Center clamp value, 4 Main pass gain (Y) GYM DC gain 7 Main pass gain (C) GCM at.58 MHz 5 Main pass frequency characteristics (Y) frio(y) 0 at 8 MHz 7 Differentiall gain DGM % 7 Differentiall phase DPM deg 5 Output DC level (Y) EOY No signal 7 Output DC level (C) EOC No signal 5 Main sub change SW threshold level ETH Y GYR C GCR Y GYF C GCF , 2 Sub picture pedestal clamp level offset epof m Composit mode keep level ETH2 0.7 APC Pull in range + fp Hz Chroma input frequency 0 fp Hz Chroma input frequency + 0 fsco Hz Post-processing gain Pre-processing gain Chroma CO oscillation frequency offset 5, 20, 24, 5, 56 As compared with 7 the main picuture's pedestal level 4 0

4 Electrical Characteristics (Ta = 25 C, = 5 ) (cont) Test Conditions Application Terminal Item Symbol Min Typ Max Units Fsc output level efsc mpp 0 Tint variance range φt deg 0 SUB 2nd BPA rated output DC level embo SUB ACC range MAX GMAX Input burst level: 4 5 as compared to the 0 SUB ACC range MIN GMIN Input burst level: 4 +6 as compared to the 0 Demo output DC level (R-Y) ER-Y Demo output DC level (B-Y) EB-Y Demodulation output ratio (R Y)/(B Y) e R Y B Y Tims, 2 Demodulation angle R Y B Y 90 deg, 2 Demodulation output bandwidth BWB-Y KHz BLK threshold level EDBTI Main composite SYNC output high level ECSH (M) Main composite SYNC output low level ECSL (M).2 44 Sub composite SYNC output high level ECSH (S) Sub composite SYNC output low level ECSL (S).2 54 Main SYNC detector output high level ENOH Main SYNC detector output low level ENOL.2 6 Sub SYNC detector output high level EKOH Sub SYNC detector output low level EKOL at, 2

5 Package Dimensions Unit: mm 2.8 ± M ± ± Max ± Hitachi Code JEDEC EIAJ 5 FP-56 SC-560-A

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