Ordering number: EN 5471 Monolithic Linear IC LA7191N Global VHS-format VCR Video Signal Processor Overview Package Dimensions unit: mm The LA7191N is a multi-format, single-chip video signal processing IC that supports TV systems around the world. 3025B-DIP42S [LA7191N] Features . Compatible with TV systems around the world (NTSC/ -NTSC/PAL-M/PAL-N). . PAL/MESECAM/4.43 All filters on chip, except for PB-LPF for chroma (cutoff requires no adjustment). . frequency No adjustment of YNR and DOC levels. . Double high-pass noise canceller on chip. . Linear phase-type picture control on chip. . fsc output can be used as clock for OSD IC. . DCC circuit on chip. . Pilot burst erasure circuit on chip. . High-speed AFC circuit on chip. . Switching noise canceller on chip. . Smallest package in the industry. . Few components needed. . 2fsc output. . I/O pin for CNR insertion added. . YNR/LNC switching possible. SANYO : DIP42S Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Allowable power dissipation Symbol Conditions Ratings VCC max Pd max Unit 7.0 Ta %65°C 1020 V mW Operating temperature Topr –10 to +65 °C Storage temperature Tstg –40 to +150 °C Operating Conditions at Ta = 25°C Parameter Symbol Recommended supply voltage VCC Operating supply voltage range VCCop Conditions Ratings Unit 5.0 V 4.8 to 5.5 V SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN 22896HA (II) No.5471 - 1/11 LA7191N Operating Characteristics at Ta = 25°C, VCC = 5.0 V Parameter [REC Mode Y] Current drain REC Symbol ICCR AGC adjustment CAGC VCA control characteristics AGC adjustment voltage AGC detection voltage EE output level AGC Output 1 VCA VAGC VAD VEE AGC 1 AGC Output 2 AGC 2 AGC Output 3 AGC 3 AGC Output 4 AGC 4 Sync separation output level VSYR Sync separation output pulse width Sync separation output leading edge delay time Sync separation threshold level PWSYR Sync tip level, pedestal level, white level measurement (REC) Pseudo V insertion level (REC) Input Output Conditions When VCC = 5 V (when there is no signal), measure sum of incoming current at pins 35 and 28 T37A VIN = 1.0 Vp-p video signal, use VR39 to adjust T4 output to 0.5 Vp-p T37A T4 Measure T4 output level when S10 is set to 2 T37A T39 Measure T39 DC voltage in above state T37A T38 Measure T38 DC voltage in same manner T37A T34A Measure T34A output level in same manner T37A T4 VIN = 2.0 Vp-p video signal Measure T4 output level T37A T4 VIN = 0.5 Vp-p video signal Measure T4 output level T37A T4 VIN = 700 mVp-p LUMI, 600 mVp-p SYNC Measure T4 SYNC level T37A T4 VIN = 700 mVp-p LUMI, 150 mVp-p SYNC Measure T4 SYNC level T37A T32 VIN = 1.0 Vp-p video signal, Measure T32 output pulse wave high value T37A T32 VIN = 1.0 Vp-p video signal, Measure T32 output pulse width min typ max Unit 95 120 145 mA 0.48 3.2 1.2 0.95 500 0.5 3.4 1.4 1.00 540 0.52 Vp-p 3.6 V 1.6 V 1.05 Vp-p 560 mVp-p 470 490 500 mVp-p 135 150 165 mVp-p 70 85 100 mVp-p 4.0 4.2 4.4 Vp-p 4.4 4.7 5.0 µs 0.6 0.8 1.0 µs –18 –14 dB 0 +80 mV –100 0 mV 250 350 mV 3.4 4.5 3.7 5.5 V dB 0.7 1.2 dB –3.5 –2.5 dB 0.9 1.4 dB –4.0 –3.0 dB 1.0 1.2 Vp-p –40 –35 dB ∆ TSYR T37A T32 VIN = 1.0 Vp-p video signal, measure delay time of output SYNC versus input SYNC THSYR T37A T32 LVOR T37A T34 ∆ VDR T37A T34 Pseudo H insertion level (REC) ∆ HDR T37A T34 White insertion level (REC) ∆ WHR T37A T34 VCA detection voltage REC YNR operation EP/LP VVCA VR-YNR T37A T37A T9 T3 Y-LPF frequency characteristics YLPF 1 T37A T3 YLPF2 T37A T3 YLPF3 T37A T3 YLPF4 T37A T3 Gradually attenuate the input level, measure input level at point when output pulse width widens 1 µs or more beyond PWSYR Measure electric potential for each of the T34 video output sync tip, pedestal, and white peak, and assign the measured values to LSYN, LPED, and LWHI, respectively Measure T34 DC voltage when 5 V is applied –80 to T33, and assign the measured value to LVDR and calculate the difference with LSYN ∆VDR = LSYN – LVDR Measure T34 DC voltage when 2.7 V is –200 applied to T33, and assign the measured value to LHDR and calculate the difference with LPED ∆HDR = LPED – LHDR Measure T34 DC voltage when 1.3 V is 150 applied to T33, and assign the measured value to LWHR and calculate the difference with LWHI ∆WHR = LWHI – LWHR Measure T9 DC voltage 3.1 VIN = white 50% + CW 3.5 (15.8 mVp-p) ratio between 32fH component and 32.5fH component VIN = standard multiburst signal 1 Vp-p, 0.2 2 MHz response to 500 kHz at T3 VIN = standard multiburst signal 1 Vp-p, –4.5 4.8 MHz response to 500 kHz at T3 VIN = standard multiburst signal 1 Vp-p, 0.4 2 MHz response to 500 kHz at T3, T22A: 5 V VIN = standard multiburst signal 1 Vp-p, –5.0 4.8 MHz response to 500 kHz at T3, T22A: 5 V. No input, use VR42 to adjust output 0.8 frequency to 4 MHz, measure output level Ratio of 8 MHz component to 4 MHz in the above state FM modulator output level VFM T40 FM modulator secondary distortion HMOD T40 Continued on next page. No. 5471 - 2/11 LA7191N Continued from preceding page. Parameter FM modulator modulation sensitivity FM modulator linearity 1/2 fH carrier shift Symbol SMOD LMOD Input Output Conditions T4 T40 Measure amplitude of change in output frequency when 2.6 V DC or 3.1 V DC is applied to T4, 2 x (f3.1 – f2.6) T4 T40 Measure output frequency when 2.85 V DC applied to T4, f2.85 – (f3.1 + f2.6)/2 LMOD = x 100 SMOD CS1 T40 CS2 T40 Emphasis gain GEMPH T4A T5 Detail enhancer characteristics GENH1 T4A T5 GENH2 T4A T5 GENH3 T4A T5 GENH4 T4A T5 GNLEMP1 T4A T5 GNLEMP2 T4A T5 GNLEMP3 T4A T5 GME1 T4A T5 GME2 T4A T5 White clipping level LWC T4A T5 Dark clipping level LDC T4A T5 NLE-SP T4A T5 Nonlinear emphasis characteristics Main linear emphasis characteristics Non-linear emphasis characteristics SP [PB Mode Y] Current drain PB ICCP Dropout compensation period TDOC DOC loop gain GDOC FM demodulation voltage VDEM4 FM demodulation sensitivity SDEM Measure amplitude of change in output frequency when SW41B is off and SW41A is switched from on to off Measure amplitude of change in output frequency when SW41B is on and SW41A is switched from on to off VIN = 0.5 Vp-p 10 kHz sine wave Measure ratio of levels of input and output amplitude at T5 VIN = 158 mVp-p 2 MHz sine wave Measure ratio of levels of T5 and T4, difference with GEMPH VIN = 50 mVp-p 2 MHz sine wave Measure ratio of levels of T5 and T4, difference with GEMPH VIN = 15.8 mVp-p 2 MHz sine wave Measure ratio of levels of T5 and T4, difference with GEMPH VIN = 15.8 mVp-p 2 MHz sine wave Measure output amplitude at T5 in edit mode, difference with GEMPH VIN = 500 mVp-p 2 MHz Measure ratio of levels of T5 and T4, difference with GEMPH VIN = 158 mVp-p 2 MHz Measure ratio of levels of T5 and T4, difference with GEMPH VIN = 50 mVp-p 2 MHz Measure ratio of levels of T5 and T4, difference with GEMPH VIN = 50 mVp-p 200 kHz sine wave Measure ratio of levels of T5 and T4, difference with GEMPH VIN = 50 mVp-p 2 MHz Measure ratio of levels of T5 and T4, difference with GEMPH VIN = 500 mVp-p white 100% video signal Measure white clipping level at T5 VIN = 500 mVp-p white 100% video signal Measure dark clipping level at T5 Same as GNLEMP3 Incoming current at pins 35 and 28 when VCC = 5.0 V T39A T34A T39A: 4 MHz, 300 mVp-p sine wave T4A T4A: 0.5Vp-p video signal T34A: time from when input went to 0 until T34A output returned, SW10 → 1 T39A T12 T39A: 4 MHz, 300 mVp-p sine wave T4A T4A: 0.5Vp-p video signal T39A: Input/output response when 5H have elapsed after input went to 0, SW10 → 3 T39A T3 VIN=300 mVp-p, f = 4 MHz, Output DC voltage T39A T3 VIN = 300 mVp-p, f = 2 MHz, VDEM2 VIN = 300 mVp-p, f = 6 MHz, VDEM6 Calculate SDEM = (VDEM6 – VDEM2)/4 min 1.6 typ 2.0 max Unit 2.4 MHz/V –2 0 +2 % 6.8 7.8 9.5 kHz 6.8 7.8 9.5 kHz –0.5 0 +0.5 dB 0.9 1.4 1.9 dB 2.2 3.2 4.2 dB 4.0 5.0 6.0 dB 1.8 2.8 3.8 dB 0.5 1.4 2.3 dB 2.6 3.8 5.2 dB 4.9 6.4 7.9 dB 4.9 5.2 5.5 dB 13.1 13.6 14.1 dB 186 193 200 % –60 –55 –50 % 3.0 4.0 5.0 dB 125 155 185 mA 0.35 0.5 0.65 ms –1.0 0 +1.0 dB 1.5 2.0 2.5 V 0.36 0.45 0.54 V/MHz Continued on next page. No. 5471 - 3/11 LA7191N Continued from preceding page. Parameter FM demodulation linearity Carrier leak Symbol LDEM Input Output Conditions VDEM4 – (VDEM6 + V DEM2)/2 x 100 LDEM = VDEM6 – VDEM2 typ 0 max +3.5 Unit % –40 –35 dB –11 –9 –7 dB –7.0 –5.5 –4.0 dB 4.0 5.5 7.0 dB –2.8 –1.8 –0.8 dB –5.0 –1.3 –4.5 –10.5 1.2 –4.0 –0.8 –3.5 –9.0 1.7 –3.0 –0.3 –2.5 –7.5 2.2 dB dB dB dB dB CL T39A T3 PB YNR characteristics LP/EP GP-YNR T4A T28A PB LNC characteristics SP GP-LNC T4A T28A Playback through gain GPB T4A T34A Nonlinear de-emphasis characteristics GNLDEEM1 T4A T34A GNLDEEM2 GWNC1 GWNC2 GWNC3 GPC T4A T4A T4A T4A T4A T34A T34A T34A T34A T34A GPH T4A T34A f = 2 MHz, 158 mVp-p 7.0 8.0 10.0 dB GPS T4A T34A f = 2 MHz, 158 mVp-p –10.0 –8.0 –7.0 dB NLDE-SP T4A T34A Same as GNLDEEM2 –5.0 –4.0 –3.0 dB LVOR T4A T34 Pseudo V insertion level (PB) ∆ VDP T4A T34 0 +80 mV Pseudo H insertion level (PB) ∆ HDP T4A T34 –200 –100 mV White insertion level (PB) ∆WHP T4A T34 120 220 mV Sync separation output level VSYP T4A T32 4.2 4.4 Vp-p PWSYP T4A T32 4.7 5.0 µs ∆ TSYP T4A T32 VIN = 0.5 Vp-p video signal, measure delay time of output SYNC versus input SYNC 0.9 1.1 1.3 µs T30 Measure DC level of T30 in REC mode 3.95 4.15 4.35 VDC T37A T15A VIN = standard color bar signal (1 Vp-p), measure burst level at T15A 120 160 200 mVp-p T37A T15A VIN = standard color bar signal (1 Vp-p) Ratio of burst level at T15A when S41A is off (SP/EP) and on (LP) 5.5 6.0 6.5 dB Noise canceller characteristics PIC-CTL center response characteristics PIC-CTL hard response characteristics PIC-CTL soft response characteristics Nonlinear de-emphasis characteristics SP Sync tip level, pedestal level, white level measurement (PB) Sync separation output pulse width Sync separation output leading edge delay time 4.2 V regulator operation check [REC Mode Chroma] REC chroma low-band conversion output level Burst emphasis amount (NTSC mode) VREG VOR-15 GBE VIN = 300 mVp-p, f = 4 MHz Ratio between 4 MHz component of T3 and SDEM VIN = white 50% + CW (15.8 mVp-p) Ratio between 32fH component and 32.5fH component VIN = white 50% + CW (15.8 mVp-p) Ratio between 32fH component and 32.5fH component Apply VIN = 0.5 Vp-p video signal to pin 4, and determine ratio between T34A output level and input level VIN = white 50% + CW (f = 1 MHz, 158 mVp-p) measure input/output response, difference with GPB f = 1 MHz, 50 mVp-p f = 1.5 MHz, 158 mVp-p f = 1.5 MHz, 50 mVp-p f = 1.5 MHz, 15.8 mVp-p f = 2 MHz, 158 mVp-p min –3.5 With VIN = white 100% and T34A at 1.0 Vp-p, measure electric potential for each of the pin 34 video output sync tip, pedestal, and white peak, and assign the measured values to LSYN, LPED, and LWHI, respectively Measure pin 34 DC voltage when 5 V is –80 applied to pin 33, and assign the measured value to LVDP, and calculate the difference with LSYN ∆ VDP = LSYN – LVDP Measure pin 34 DC voltage when 2.7 V is –300 applied to pin 33, and assign the measured value to LHDP, and calculate the difference with LPED ∆HDP = LPED – LHDP Measure pin 34 DC voltage when 1.3 V is 20 applied to pin 33, and assign the measured value to LWHP, and calculate the difference with LWHI ∆WHP = LWHI – LWHP VIN = 0.5 Vp-p video signal, pin 32 output 4.0 pulse wave high value VIN = 0.5 Vp-p video signal, T32 output pulse 4.4 width Continued on next page. No. 5471 - 4/11 LA7191N Continued from preceding page. Parameter VXO oscillation level REC ACC characteristics REC ACC killer input level REC ACC killer output level Input level for REC ACC killer return VXO control sensitivity REC APC pull-in range Symbol VVXO-R Input Output Conditions T37A T19 VIN = standard color bar signal (1 Vp-p), measure T19 output amplitude (with a FET probe) ACCR1 T37A T15A VIN = standard color bar signal (1 Vp-p), input +6 dB chroma signal level only, measure T15A burst level, and calculate ratio with VOR-15 ACCR2 T37A T15A VIN = standard color bar signal (1 Vp-p), input –6 dB chroma signal level only, measure T15A burst level, and calculate ratio with VOR-15 VACCK-ON T37A T15A VIN = standard color bar signal (1 Vp-p), lower the chroma signal, and measure the input burst level at the point where output at T15A ceases, and calculate the ratio with the standard input level VOACCK T37A T15A Use a spectrum analyzer to measure the output level at T15A in the killer state described previously; ratio with VOR-15 VACCK-OFF T4A T34A Starting from the killer state described previously, gradually raise the input chroma level and measure the input burst level when output is generated at T15A and calculate the ratio with the standard input level SVXO T37A T17 Measure the pin 17 DC voltage when a T19A standard color bar signal is input (1 Vp-p)...V0 Measure the frequency at T19A when V0 is applied to pin 17 from the external power supply...f1 Measure the frequency at T19A when V0 + 10 mV is applied to pin 17...f2 f –f SVXO = 2 1 Hz/mV 10 ∆ fAPC1 ∆ fAPC2 BGP delay time tD BGP pulse width tW T37A T15A Input a 50% white signal overlapped with a 4.4336 MHz, 300 mVp-p continuous wave. After confirming that there is output at T15A, increase the frequency of the CW until the output at T15A stops, and then gradually reduce the frequency until output appears again at T15A; that CW frequency is f1. ∆fAPC1 = f1 – 4433619 (Hz) T37A T15A In the same manner, reduce the frequency of the CW until the output at T15A stops, and then gradually increase the frequency until output appears again at T15A; that CW frequency is f2. ∆fAPC2 = f2 – 4433619 (Hz) T37A T32 Measure waveforms at T32 and T36 when a T36 standard color bar signal (1 Vp-p) is input. T37A T32 T36 min 450 –0.5 typ 560 max Unit 670 mVp-p 0.2 0.5 dB –0.1 dB –26 dB –60 –50 –20 3.8 5.7 350 440 dB dB 7.6 Hz/mV Hz –900 –350 Hz 4.3 µs 4.8 µs Continued on next page. No. 5471 - 5/11 LA7191N Continued from preceding page. Parameter REC AFC pull-in range Symbol ∆fAFC1 Input Output Conditions T37A T24 Input a string of pulses (negative polarity) at 300 mV, 15.6 kHz with a width of 5 µs. After increasing the frequency of the pulse string until the waveform at pin 24 is disrupted, then reduce the frequency until the waveform at pin 24 is normal again; that pulse string frequency is f1. min 1.0 typ 7.0 max Unit kHz –3.7 –1.0 kHz 240 300 360 mVp-p 220 270 320 mVp-p ∆fAFC1 = f1 – 15.625 (kHz) ∆ fAFC2 T37A Vop-34 T39A T15A T4A PB chroma pin 31 output level Vop-31 PB ACC characteristics ACCP1 T39A T15A T4A T39A T15A T4A [PB Mode Chroma] PB chroma video output level ACCP2 T39A T15A T4A VACK-P T39A T15A T4A VOACK-P T39A T15A T4A PB main converter carrier leak CLP T39A T14A T4A Burst de-emphasis amount (NTSC mode) GBD T39A T4A T27A PB killer input level PB killer chroma output level PB XO output level VXO-P PB XO oscillation frequency variation ∆ fXO T24 In the same manner, after reducing the frequency of the pulse string until the waveform at pin 24 is disrupted, then increase the frequency until the waveform at pin 24 is normal again; that pulse string frequency is f2. ∆fAFC2 = f2 – 15.625 (kHz) T34A In PB, SP mode, input a 4 MHz: 300 mVp-p continuous wave at T39A, and from T15A input a chroma signal (SP mode, burst 50 mVp-p) that underwent low-band conversion from a chroma noise test signal. Input a 50% white signal from T4A and measure the T34A burst level T31 Measure the T31 burst level under the same conditions as for Vop-34. T31 Input the input chroma level at +6 dB under 0.5 0.8 dB the same conditions as for Vop-34 and measure the T31 burst level, and calculate the ratio with Vop-31. T31 Input the input chroma level at –6 dB under –0.5 –0.2 dB the same conditions as for Vop-34 and measure the T31 burst level, and calculate the ratio with Vop-31. T31 Lower the input chroma level under the same –40 –32 –25 dB conditions as for Vop-34 and measure the input burst level at the point where T31 chroma output ceases. (Calculate ratio with standard input of 50 mVp-p) T34A Use a spectrum analyzer to measure the T34 –44 –40 dB chroma output level in the killer state described previously. Calculate ratio with Vop-34. T34A Monitor T34A with a spectrum analyzer under –40 –33 dB the same conditions as for Vop-34 and calculate the ratio between the 4.43 MHz component and the 5.06 MHz carrier leak component. T31 From T39A, input a 4 MHz 300 mVp-p –4.40 –4.65 –4.90 dB continuous wave; from T4A, input a 50% white signal, and calculate the ratio between the output level during the T31 burst interval and the output level during other intervals. T19 Measure the PB mode T19 output level with 480 610 750 mVp-p an FET probe T19A Measure the frequency at T19A during PB –9 0 +9 Hz mode...f ∆fXO = f – 4433619 (Hz) Continued on next page. No. 5471 - 6/11 LA7191N Continued from preceding page. Parameter SLD detection current Symbol ISLD1 Input Output Conditions T39A T23A In PB mode, with S24: 3 and S23: off, input a T4A 4 MHz 300 mVp-p continuous wave from T39A, input a 50% white signal from T4A, and measure the wave peak at T23A min typ 135 max Unit µA ISLD1 = VOS1/1 kΩ ISLD2 T39A T23A Same as above (however, S24 = 1) T4A 135 µA ISLD2 = VOS2/1 kΩ 2fsc output level V2fsc T21 In PB mode, measure the T21 output level with an FET probe 480 640 800 mVp-p Note) A trap (4.84 MHz for NTSC systems and 5.69 MHz for PAL systems) is required in the chroma playback system (between pins 25 and 27 or between pins 31 and 29) in order to suppress unnecessary components in converter output. No. 5471 - 7/11 LA7191N Equivalent Circuit Block Diagram and Sample Application Circuit Unit (resistance: Ω, capacitance: F) No. 5471 - 8/11 LA7191N LA7191N Control Pins Pin No. Function Control 20 N.C control Linear 22 Filter switching H 3.58 MHz system L or OPEN 4.43 MHz system 42 YNR/LNC selection OPEN L Contents When → high, N.C → Strong YNR LNC (line noise canceller) Test Circuit Diagram LA7191N Unit (resistance: Ω, capacitance: F) No. 5471 - 9/11 LA7191N Control Pin Function Chart Pin No. L Pin 5 R/P switching Open REC mode M Over 3.8V PB mode H Pin 1 SP changeover Open Over 3.9 V SP mode Pin13 EDIT2 PIC-CTL 2 V to 2.5 V PIC-CTL SOFT 2.5 V to 3 V PIC-CTL HARD Over 3.6 V EDIT ON Pin 14 SECAM CTL Over 4.0 V SECAM mode Pin 17 Special playback switching Open Before comb in SP Over 3.5 V (over 200 µA) After comb in SP Pin 27 MESECAM CTL Open Over 3.0 V MESECAM mode Pin 33 QV, QH, CHAR Refer to Pin 33, QV, QH, CHAR, insertion diagram Pin 36 NTSC-CTL NTSC mode if current is 150 µA or more Pin 40 DOC STOP control Open Normal mode Over 3.9 V DOC STOP Pin 41 ROTARY pulse LP switch ROTARY PULSE Tape speed Pin 42 YNR/LNC switch SP or EP mode Line NC when under 1 V in PB LP mode Open SP: LNC, LP/EP: YNR Pin 34 output voltage Pin 33 QV, QH, CHAR, insertion Through Pin 33 control voltage (V) THROUGH CHAR QH QV No. 5471 - 10/11 LA7191N No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. Anyone purchasing any products described or contained herein for an above-mentioned use shall: 1 Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: 2 Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of February, 1996. Specifications and information herein are subject to change without notice. No. 5471 - 11/11