BA7207AS Rohm, BA7207AS Datasheet
BA7207AS
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BA7207AS Summary of contents
Page 1
... VHS VCRs BA7207AS / BA7207AK The BA7207AS and BA7207AK are LSI components that incorporate the contain circuitry required for SECAM chro- ma signal processing. The ICs have both recording and playback systems and each includes a bell filter, a band- pass filter, a limiter amplifier, a multiply-by-four circuit, a divide-by-four circuit, and a sync-gate circuit. ...
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... FREQUENCY ADJUSTER LIM VREG R P 2.2MHz LIM BPF 4.3MHz 4.3MHz PB BELL BPF—A BPF—B SYNC GATE P DET BA7207AS / BA7207AK MODE CONTOROL R P 1.1MHz EQ P BPF R R REC 4 SYNC GATE SYNC GATE TIMING GENERATOR PAL CREF3 MODE 21 RECH CONTROL 20 PBIN 19 N. ...
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... RECOUT 29 (34) TRAP 30 (35) PALRIN 31 (36) VREG 32 (38 BA7207AS / BA7207AK Function Chroma killer mode setting . "L" sets the IC in chroma killer mode. PB system input . Input chroma signal for the PB system. REC / PB mode switch. Set to open or "H" for REC mode, "L" for PB mode ...
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... GND 4pin (44pin FADJ2 GND GND 7pin (3pin) GND GND 4 2pin (42pin MUL GND 5pin (1pin) GND1 GND 8pin (5pin 20k SCMPIN 30k GND BA7207AS / BA7207AK 3pin (43pin FADJ1 GND GND 6pin (2pin AMPOUT 5k GND 9pin (7pin 20k SCMPIN 30k GND ...
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... PBOUT 2.2k GND 14pin (13pin 20k PALPIN 30k GND 17pin (18pin 50k BWL GND 20pin (22pin CREF3 GND BA7207AS / BA7207AK 12pin (11pin 50k 100k SGADJ GND 50k GND 15pin (14pin DIV GND 18pin (20pin 20k PBIN 20k GND 21pin ...
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... V CC 26pin (31pin ABELO 1.8k GND 29pin (34pin 560 TRAP 200 GND 32pin (38pin GND BA7207AS / BA7207AK 24pin (27pin LAIN 2k GND GND 27pin (32pin CREF2 30k GND GND 30pin (35pin 20k PALRIN 30k GND Pin numbers in parentheses are for the BA7207AK. ...
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... CT — – 40 – RIN 2.5 — — — — 1 BA7207AS / BA7207AK Measurement Conditions circuit REC mode Fig.1 PB mode Fig.1 Fig.1 Fig.1 Delayed sync input Fig.1 Delayed sync input Fig.1 Delayed sync input Fig.1 Delayed sync input Fig.1 Cyan level (cyan frequency) Fig ...
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... G PE3 Min. Typ. Max. 1.3 2.4 3.5 DR 0.5 1.6 2.7 DP 4.9 5.2 5.5 6.1 6.4 6.7 The pin numbers in brackets are for the BA7207AS and the BA7207AK respectively. BA7207AS / BA7207AK Unit Conditions 25mV , 1.0715MHz 18 P 25mV , 0.5MHz 18 P 25mV , 3.2145MHz ...
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... RE2 G — – 11.0 — RE3 G — – 19.5 — PE1 G — 8.0 — PE2 G — 11.0 — PE3 df – BA7207AS / BA7207AK Unit Conditions 0.3V , 1.0715MHz IN P 0.3V , 0.5MHz IN P 0.3V , 3.2145MHz IN P 0.3V , 1.0715MHz ...
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... SYNC GATE DET VCO SCM PAL 100k 0.01 10k 2k 4700p VR2 0.47 + 33k 7.5k SW8 AMPOUT 470 OSC8 12 470 560p Fig. 1 BA7207AS / BA7207AK SW21 SW19 OSC18 1 2 SW18 0.01 0.1 Vcc CTL RECH BWL MODE CONTOROL R P 1.1MHz EQ BPF P R REC ...
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... LIM EQ BPF 4.3MHz 4.3MHz PB 4 BELL BPF — A BPF — B SYNC GATE P DET 0.01 470 SW8 10k OSC8 0. 470 560p AMP OUT Fig. 2 BA7207AS / BA7207AK SW21 SW19 SW4b V CC I23 0 MODE 21 CONTROL 20 0.01 19 SW18 BPF R OSC18 17 REC SYNC GATE 16 SYNC GATE ...
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... BA7207AS (BA7207AK) Fig. 3 1.1MHz PB LIMAMP 2 AMP BPF 4.3MHz LIMAMP SYNC BELL BPF - B GATE ) 27 BA7207AS (BA7207AK) Fig. 4 Horizontal scan interval 64 s Fig. 5 BA7207AS / BA7207AK REC 1.1MHz REC SYNC 28 AMP BPF EQ GATE ( 2.2MHz 4.3MHz 2 BPF - A BPF AMP AMP ( ) ( ) ( TRAP Vertical retrace interval ...
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... SCM LIM 2 LIM PB 4.3MHz SYNC GATE BPF - DET VCO SCM PAL VR3 100k 0.01 2 33k 10k 1k 12 0.47 560p 30ppm / C ( – 125 C) A (CG). Fig. 6 BA7207AS / BA7207AK LPF + 0.01 0 MODE CONTOROL R P 1.1MHz EQ BPF P R REC 4 SYNC GATE SYNC GATE TIMING GENERATOR ...
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... SYNC GATE P DET 100k VR3 0.01 10k 4700p 0.47 580p 30ppm / C ( – 125 C) A (CG). Fig. 7 Pin Low High (Open) PB PAL SECAM Chroma killer NORMAL (BA7207AS / BA7207AK) BA7207AS / BA7207AK 100 + 0.1 MODE 21 CONTROL 0.01 20 LPF REC 16 SYNC GATE 100p VCO TIMING 15 GENERATOR 14 ...
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... Sync-gate phase adjustment Perform fine adjustment of the sync-gate phase by applying a voltage to the SGADJ terminal, or using a resistor divider connected between V adjustment sensitivity is shown in Fig. 6. resistor, to prevent interfer- CC BA7207AS / BA7207AK and GND. The CC SGADJ pin voltage when open: V Input impedance Z = 125k + 3 0.1V – ...
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... Fundamental – 100 frequency 2MHz 3MHz component component component – 110 100 0 1.0 2.0 3.0 FREQUENCY: f (MHz) Fig. 13 REC OUT spurious characteristics BA7207AS / BA7207AK 4.40 4.35 4.30 4.25 fo 4.20 4.15 0 100 200 9.5 1PIN REC IN LEVEL ADJ2 Fig. 11 REC / BELL f O frequency variation – ...
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... Video ICs • External dimensions (Units: mm) BA7207AS 28.0 0 1.778 SDIP32 BA7207AK 10. 0.5 0.1 BA7207AS / BA7207AK 14.0 0.3 10.0 0 0.15 0.1 0.8 0.35 0.1 0.15 QFP44 17 ...