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Ordering number: EN 5471
Monolithic Linear IC
LA7191N Global VHS-format VCR Video Signal Processor
Overview
The LA7191N is a multi-format, single-chip video signal processing IC that supports TV systems around the world.
Package Dimensions
unit: mm
3025B-DIP42S
[LA7191N]
Features
. Compatible with TV systems around the world (NTSC/ . PAL/MESECAM/4.43 -NTSC/PAL-M/PAL-N). (cutoff All filters on chip, except for PB-LPF for chroma no . frequency requiresYNRadjustment).levels. No adjustment of . Double high-pass noise and DOC on chip. canceller . 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.
Specifications
Maximum Ratings at Ta = 25C
Parameter Maximum supply voltage Allowable power dissipation Operating temperature Storage temperature Symbol VCC max Pd max Topr Tstg Ta %65C Conditions Ratings
SANYO : DIP42S
Unit 7.0 V mW C C
1020 -10 to +65 -40 to +150
Operating Conditions at Ta = 25C
Parameter Recommended supply voltage Operating supply voltage range Symbol VCC VCCop Conditions Ratings 5.0 4.8 to 5.5 Unit V 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 = 25C, VCC = 5.0 V
Parameter [REC Mode Y] Current drain REC Symbol ICCR Input Output Conditions min 95 typ 120 max 145 Unit mA
AGC adjustment VCA control characteristics AGC adjustment voltage AGC detection voltage EE output level AGC Output 1 AGC Output 2 AGC Output 3 AGC Output 4 Sync separation output level Sync separation output pulse width Sync separation output leading edge delay time Sync separation threshold level Sync tip level, pedestal level, white level measurement (REC) Pseudo V insertion level (REC)
CAGC VCA VAGC VAD VEE AGC 1 AGC 2 AGC 3 AGC 4 VSYR PWSYR TSYR THSYR
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 T37A T37A T32 T32 VIN = 1.0 Vp-p video signal, measure delay time of output SYNC versus input SYNC
0.48 3.2 1.2 0.95 500 470 135 70 4.0 4.4 0.6
0.5 3.4 1.4 1.00 540 490 150 85 4.2 4.7 0.8 -18
0.52 Vp-p 3.6 V 1.6 V 1.05 Vp-p 560 mVp-p 500 mVp-p 165 mVp-p 100 mVp-p 4.4 5.0 1.0 -14 Vp-p s s dB
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 Y-LPF frequency characteristics
VVCA VR-YNR
T37A T37A
T9 T3
YLPF 1 YLPF2 YLPF3 YLPF4
T37A T37A T37A T37A
T3 T3 T3 T3
FM modulator output level FM modulator secondary distortion
VFM HMOD
T40 T40
Gradually attenuate the input level, measure input level at point when output pulse width widens 1 s 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
0
+80
mV
-100
0
mV
250
350
mV
3.4 4.5
3.7 5.5
V dB
0.7 -3.5 0.9 -4.0
1.2 -2.5 1.4 -3.0
dB dB dB dB
1.0 -40
1.2 -35
Vp-p dB
Continued on next page.
No. 5471 - 2/11
LA7191N
Continued from preceding page.
Parameter FM modulator modulation sensitivity FM modulator linearity Symbol SMOD 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 T40 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 min 1.6 typ 2.0 max Unit 2.4 MHz/V
LMOD
-2
0
+2
%
1/2 fH carrier shift
CS1
6.8
7.8
9.5
kHz
CS2
T40
6.8
7.8
9.5
kHz
Emphasis gain
GEMPH
T4A
T5
-0.5
0
+0.5
dB
Detail enhancer characteristics
GENH1
T4A
T5
0.9
1.4
1.9
dB
GENH2
T4A
T5
2.2
3.2
4.2
dB
GENH3
T4A
T5
4.0
5.0
6.0
dB
GENH4
T4A
T5
1.8
2.8
3.8
dB
Nonlinear emphasis characteristics
GNLEMP1
T4A
T5
0.5
1.4
2.3
dB
GNLEMP2
T4A
T5
2.6
3.8
5.2
dB
GNLEMP3
T4A
T5
4.9
6.4
7.9
dB
Main linear emphasis characteristics
GME1
T4A
T5
4.9
5.2
5.5
dB
GME2
T4A
T5
13.1
13.6
14.1
dB
White clipping level Dark clipping level Non-linear emphasis characteristics SP [PB Mode Y] Current drain PB Dropout compensation period
LWC LDC NLE-SP
T4A T4A T4A
T5 T5 T5
186 -60 3.0
193 -55 4.0
200 -50 5.0
% % dB
ICCP TDOC
DOC loop gain
GDOC
FM demodulation voltage FM demodulation sensitivity
VDEM4 SDEM
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
125 0.35
155 0.5
185 0.65
mA ms
-1.0
0
+1.0
dB
1.5 0.36
2.0 0.45
2.5
V
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 CL Input Output Conditions VDEM4 - (VDEM6 + V DEM2)/2 x 100 LDEM = VDEM6 - VDEM2 T39A T3 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 typ 0 -40 max +3.5 -35 Unit % dB
PB YNR characteristics LP/EP PB LNC characteristics SP Playback through gain
GP-YNR
T4A
T28A
-11
-9
-7
dB
GP-LNC
T4A
T28A
-7.0
-5.5
-4.0
dB
GPB
T4A
T34A
4.0
5.5
7.0
dB
Nonlinear de-emphasis characteristics
GNLDEEM1
T4A
T34A
-2.8
-1.8
-0.8
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) Pseudo V insertion level (PB)
GNLDEEM2 GWNC1 GWNC2 GWNC3 GPC GPH GPS NLDE-SP LVOR
T4A T4A T4A T4A T4A T4A T4A T4A T4A
T34A T34A T34A T34A T34A
-5.0 -1.3 -4.5 -10.5 1.2 7.0 -10.0 -5.0
-4.0 -0.8 -3.5 -9.0 1.7 8.0 -8.0 -4.0
-3.0 -0.3 -2.5 -7.5 2.2 10.0 -7.0 -3.0
dB dB dB dB dB dB dB dB
T34A f = 2 MHz, 158 mVp-p T34A f = 2 MHz, 158 mVp-p T34A Same as GNLDEEM2 T34
VDP
T4A
T34
Pseudo H insertion level (PB)
HDP
T4A
T34
White insertion level (PB)
WHP
T4A
T34
Sync separation output level 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)
VSYP PWSYP TSYP VREG
T4A T4A T4A
T32 T32 T32 T30
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 VIN = 0.5 Vp-p video signal, measure delay time of output SYNC versus input SYNC Measure DC level of T30 in REC mode 0.9 3.95
0
+80
mV
-200
-100
mV
120
220
mV
4.2 4.7 1.1 4.15
4.4 5.0 1.3 4.35
Vp-p s s VDC
VOR-15 GBE
T37A T15A VIN = standard color bar signal (1 Vp-p), measure burst level at T15A 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)
120 5.5
160 6.0
200 6.5
mVp-p dB
Continued on next page.
No. 5471 - 4/11
LA7191N
Continued from preceding page.
Parameter VXO oscillation level 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 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. Symbol VVXO-R min 450 typ 560 max Unit 670 mVp-p
REC ACC characteristics
0.2
0.5
dB
-0.5
-0.1
dB
REC ACC killer input level
-26
dB
REC ACC killer output level
-60
-50
dB
Input level for REC ACC killer return
-20
dB
VXO control sensitivity
3.8
5.7
7.6
Hz/mV
REC APC pull-in range
350
440
Hz
fAPC2
-900
-350
Hz
BGP delay time
tD
4.3
s
BGP pulse width
tW
T37A
T32 T36
4.8
s
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 s. 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
fAFC1 = f1 - 15.625 (kHz) fAFC2 T37A 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) 240 -3.7 -1.0 kHz
[PB Mode Chroma] PB chroma video output level
Vop-34
T39A T15A T4A
PB chroma pin 31 output level PB ACC characteristics
Vop-31
ACCP1
T39A T15A T4A T39A T15A T4A T39A T15A T4A T39A T15A T4A
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
300
360 mVp-p
220
270
320 mVp-p
ACCP2
PB killer input level
VACK-P
PB killer chroma output level
VOACK-P
T39A T15A T4A T39A T14A T4A
PB main converter carrier leak
CLP
Burst de-emphasis amount (NTSC mode)
GBD
T39A T4A T27A
PB XO output level PB XO oscillation frequency variation
VXO-P fXO
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 A
ISLD1 = VOS1/1 k ISLD2 T39A T23A Same as above (however, S24 = 1) T4A 135 A
ISLD2 = VOS2/1 k 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: , capacitance: F)
No. 5471 - 8/11
LA7191N
LA7191N Control Pins
Pin No. 20 22 42 Function N.C control Filter switching YNR/LNC selection Control Linear H L or OPEN OPEN L 3.58 MHz system 4.43 MHz system YNR LNC (line noise canceller) Contents When high, N.C Strong
Test Circuit Diagram
LA7191N
Unit (resistance: , capacitance: F)
No. 5471 - 9/11
LA7191N
Control Pin Function Chart
Pin No. Pin 5 R/P switching Pin 1 SP changeover Pin13 EDIT2 PIC-CTL Pin 14 SECAM CTL Pin 17 Special playback switching Pin 27 MESECAM CTL Pin 33 QV, QH, CHAR Pin 36 NTSC-CTL Pin 40 DOC STOP control Pin 41 ROTARY pulse LP switch ROTARY PULSE Tape speed Pin 42 YNR/LNC switch Line NC when under 1 V in PB Open Normal mode Open Before comb in SP Open L Open REC mode Open 2 V to 2.5 V PIC-CTL SOFT 2.5 V to 3 V PIC-CTL HARD M H Over 3.8V PB mode Over 3.9 V SP mode Over 3.6 V EDIT ON Over 4.0 V SECAM mode Over 3.5 V (over 200 A) After comb in SP Over 3.0 V MESECAM mode
Refer to Pin 33, QV, QH, CHAR, insertion diagram NTSC mode if current is 150 A or more Over 3.9 V DOC STOP
SP or EP mode Open SP: LNC, LP/EP: YNR
LP mode
Pin 33 QV, QH, CHAR, insertion
Pin 34 output voltage
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

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