LA7386.PDF

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311048133 UNPDF
Ordering number: EN 5472
Monolithic Linear IC
LA7386
NTSC Video Signal Processing LSI for VCRs
Overview
Package Dimensions
unit : mm
3170-DIP36S
The LA7386 combines luminance signal processing functions
and color signal processing functions for NTSC VCRs on a
single chip. Developed as a new-generation LSI for use in
VCRs which offer increasingly higher image quality, the
LA7383 offers all of the functions needed in order to realize
improved picture quality in a dramatically compact 36-pin
package, making this device suitable for a wide range of
VCRs, from popularly priced models to high-end models.
[LA7386]
SANYO : DIP36S
. Supports full HQ functions.
YNR on chip (standard).
CNR on chip (external components can be removed for passthrough operation).
Detail enhancer on chip.
Higher white clipping level (190%).
. In addition to the above, also provides the following functions for excellent image quality:
Edge compensation.
Double high-pass noise canceller ® permits wide-band noise reduction.
Linear phase-type image quality adjustment ® ideal image quality adjustment method, with no waveform distortion.
. By adopting the 1CCD method, one comb filter (glass) has become unnecessary.
Has a single 1H-delay CCD and a comb Y/C separation/YNR chroma crosstalk canceller function on chip.
. Automatic adjustment filter on chip.
Y: LPF
C: 3.58 MHz BPF, 4.21 MHz BPF, LPF (REC)
. No adjustment required for white and dark clipping levels.
. Extremely few peripheral components (about 60 components, excluding peripheral components for the CCD).
. fsc output can be used as clock for OSD IC.
Crystal oscillator for the on-screen display circuit is not required.
. DCC circuit on chip.
Suppresses flicker at top of screen and reduces AM noise.
. High-speed AFC circuit.
Prevents color alteration and loss at top of screen when dubbing.
. Head switching noise reduction circuit on chip.
. Smallest package in the industry.
. Few components needed.
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
22896HA(II) No.5472 - 1/13
Features
. Includes all functions required for video signal processing in an NTSC VCR.
311048133.023.png
LA7386
Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
V CC max
7.0
V
Allowable power dissipation
Pdmax
Ta % 65°C
1070
mW
Operating temperature
Topr
–10 to +65
°C
Storage temperature
Tstg
–40 to +150
°C
Operating Conditions at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
Recommended supply voltage
V CC
5.0
V
Operating supply voltage range
V CC op
4.8 to 5.2
V
Operating Characteristics at Ta = 25°C, V CC =5V
Parameter
Symbol
Conditions
min typ max Unit
[REC Mode Y]
Current consumption REC
I CC R When V CC = 5 V (when there is no signal),
measure sum of incoming currents at pins 29 and
24
95 120 145 mA
AGC adjustment
CAGC V IN = 1.0 Vp-p video signal, use VR33 to adjust
T3 output to 0.5 Vp-p
VCA control characteristics 1
VCA 1 Measure T3 output level when S9 is set to 2
0.48 0.5 0.52 Vp-p
VCA control characteristics 2
VCA 2 Measure T3 output level when S9 is set to 4
0.48 0.5 0.52 Vp-p
AGC adjustment voltage
V AGC Measure T33 DC voltage in above state
3.2 3.4 3.6 V
AGC detection voltage
V AD Measure T32 DC voltage in same manner
1.2 1.4 1.6 V
EE output level
V EE Measure T28A output level in same manner
0.95 1.0 1.05 Vp-p
AGC output 1
AGC 1 V IN = 2.0 Vp-p video signal
Measure T3 output level
500 520 540 mVp-p
AGC output 2
AGC 2 V IN = 0.5 Vp-p video signal
Measure T3 output level
460 480 500 mVp-p
AGC output 3
AGC 3 V IN = 714 mVp-p LUMI, 572 mVp-p SYNC,
measure T3 SYNC level
135 150 165 mVp-p
AGC output 4
AGC 4 V IN = 714 mVp-p LUMI, 143 mVp-p SYNC,
measure T3 SYNC level
90 100 110 mVp-p
Sync separation output level
V SYR V IN = 1.0 Vp-p video signal,
T26 output pulse peak value
4.0 4.2 4.4 Vp-p
Sync separation output pulse
width
PW SYR V IN = 1.0 Vp-p video signal,
T26 output pulse width
4.0 4.3 4.6 µs
Sync separation output leading
edge delay time
D T SYR V IN = 1.0 Vp-p video signal, measure delay time
of output SYNC versus input SYNC
0.8 1.0 1.2 µs
Sync separation threshold level TH SYR Gradually attenuate the input level, measure input
level at point when output pulse width widens 1
µs or more beyond PWSYR
–18 –14 dB
Sync tip level,
pedestal level,
white level measurement
(REC)
L VOR Measure electric potential for each of the T28
video output sync tip, pedestal, and white peak,
and assign the measured values to L SYN ,L PED ,
and L WHI , respectively
VCA detection voltage
VVCA Measure T8 DC voltage
2.80 2.95 3.10 V
Comb filter adjustment
V IN = standard multiburst signal 1 Vp-p and S30
= off, adjust so that the 3.58 MHz component at
T21 is at a minimum
Y-comb characteristics
GY-Comb Measure the chroma level at T2 with a spectrum
analyzer, V IN = standard chroma noise test signal
1 Vp-p and S30 = off
–25 dB
C-comb characteristics
GC-Comb V IN = white 50% + CW 3.0 MHz
–25 dB
Continued on next page.
No.5472 - 2/13
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LA7386
Continued from preceding page.
Parameter
Symbol
Conditions
min typ max Unit
REC YNR operation
EP/LP (1)
VR-YNR1 Measure the YNR addition level at T2 with V IN =
standard color bar signal 1 Vp-p and S30 = off
10 12 14 mV
REC YNR operation
EP/LP (2)
VR-YNR2 Measure the YNR addition level at edit mode T2
with V IN = standard color bar signal 1 Vp-p and
S30=off
2 3 4 V
Pre-CCD LPF
frequency characteristics (1)
G PFIL1 Input a standard multiburst signal (1 Vp-p) and
measure the 4 MHz response for 500 kHz at T11
–0.5 0 +0.5 dB
Pre-CCD LPF
frequency characteristics (2)
G PFIL2 10 MHz response for 500 kHz at T11 when
V IN = standard multiburst signal 1 Vp-p and
S30=off
–10 –8 –6 dB
3MLPF
frequency characteristics (1)
G 3MLP1 1 MHz response for 500 kHz at T2 when V IN =
standard multiburst signal 1 Vp-p and S30 = off
–0.5 0 +0.5 dB
3MLPF
frequency characteristics (2)
G 3MLP2 2 MHz response for 500 kHz at T2 when V IN =
standard multiburst signal 1 Vp-p and S30 = off
–1 0 +1 dB
3MLPF
frequency characteristics (3)
G 3MLP3 3 MHz response for 500 kHz at T2 when V IN =
standard multiburst signal 1 Vp-p and S30 = off
–10 –8 –6 dB
3MLPF
frequency characteristics (4)
G 3MLP4 3.58 MHz response for 500 kHz at T2 when
V IN = standard multiburst signal 1 Vp-p and
S30=off
–30 dB
3MLPF
frequency characteristics (5)
G 3MLP5 4.2 MHz response for 500 kHz at T2 when
V IN = standard multiburst signal 1 Vp-p and
S30=off
–15 dB
FM modulator output level
V FM No input, use VR36 to adjust output frequency to
4 MHz, measure output level
0.89 1.0 1.12 Vp-p
FM modulator
secondary distortion
H MOD Ratio of 8 MHz component to 4 MHz in the above
state
–40 –35 dB
FM modulator
modulation sensitivity
S MOD Measure amplitude of change in output frequency
when 2.6 V DC or 3.1 V DC is applied to T3,
2 x (f3.1 – f2.6)
1.6 2.0 2.4 MHz/V
FM modulator linearity
L MOD Measure output frequency when 2.85 V DC
applied to T3, f2.85
L MOD = f2.85 – (f3.1 + f2.6)/2
f3.1 – f2.6
–3 0 +2 %
x 100
1/2 f H carrier shift 1
C S1 Measure amplitude of change in output frequency
when SW35B is from on to off and SW35A is off
6.8 7.8 9.5 kHz
1/2 f H carrier shift 2
C S2 Measure amplitude of change in output frequency
when SW35A is on and SW35B is switch from on
to off
6.8 7.8 9.5 kHz
Emphasis gain
G EMP V IN = 0.5 mVp-p 10 kHz sine wave
Measure ratio of levels of input and output
amplitude at T4
–0.5 0 +0.5 dB
Detail enhancer characteristics
(1)
G ENH1 V IN = 158 mVp-p 2 MHz sine wave
Measure ratio of levels of T4 and T3, difference
with G EMP
1.6 1.9 2.6 dB
Detail enhancer characteristics
(2)
G ENH2 V IN = 50 mVp-p 2 MHz sine wave
Measure ratio of levels of T4 and T3, difference
with G EMP
3.1 4.1 5.1 dB
Detail enhancer characteristics
(3)
G ENH3 V IN = 15.8 mVp-p 2 MHz sin wave
Measure ratio of levels of T4 and T3, difference
with G EMP
5.3 6.3 7.3 dB
Detail enhancer characteristics
(4)
G ENH4 V IN = 15.8 mVp-p 2 MHz sine wave
Measure output amplitude at T4 in edit mode,
difference with G EMP
2.9 3.9 4.9 dB
Nonlinear emphasis
characteristics (1)
G NLEMP1 V IN = 500 mVp-p 2 MHz
Measure ratio of levels of T4 and T3, difference
with G EMP
0.5 1.4 2.3 dB
Nonlinear emphasis
characteristics (2)
G NLEMP2 V IN = 158 mVp-p 2 MHz
Measure ratio of levels of T4 and T3, difference
with G EMP
2.6 3.8 5.2 dB
Continued on next page.
No.5472 - 3/13
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LA7386
Continued from preceding page.
Parameter
Symbol
Conditions
min typ max Unit
Nonlinear emphasis
characteristics (3)
G NLEMP3 V IN = 50 mVp-p 2 MHz
Measure ratio of levels of T3 and T4, difference
with G EMP
4.9 6.4 7.9 dB
Main linear emphasis
characteristics (1)
G ME1 V IN = 50 mVp-p 500 kHz sine wave
Measure ratio of levels of T4 and T3, difference
with G EMP
4.9 5.2 5.5 dB
Main linear emphasis
characteristics (2)
G ME2 V IN = 50 mVp-p 2 MHz
Measure ratio of levels of T4 and T3, difference
with G EMP
13.1 13.6 14.1 dB
Detail enhancer US mode
characteristics (1)
G ENHS1 Measure the amplitude at T4 when
V IN = 15.8 mVp-p 2 MHz sine wave; compare
level with G EMP
2.9 3.9 4.9 dB
Detail enhancer US mode
characteristics (2)
G ENHS2 Measure the amplitude at T4 when
V IN = 15.8 mVp-p 2 MHz sine wave in edit mode;
compare level with G EMP
0.7 1.7 2.7 dB
White clipping level
L WC V IN = 500 mVp-p white 100% video
Measure white clipping level at T4
186 193 200 %
Dark clipping level
L DC V IN = 500 mVp-p white 100% video
Measure dark clipping level at T4
–50 –45 –40 %
[PB Mode Y]
Current consumption PB
I CC P Incoming currents at pins 29 and 24 when
V CC = 5.0 V
125 155 185 mA
Dropout compensation period T DOC T33A: 4 MHz, 300 mVp-p sine wave
T3A: 0.5 Vp-p video signal
T33A: time from when input went to 0 until T28A
output returned
0.6
1.0 ms
FM demodulation voltage
V DEM4 V IN = 300 mVp-p,f=4MHz, output voltage
0.9 1.05 1.15 V
FM demodulation sensitivity
S DEM V IN = 300 mVp-p,f=2MHz, V DEM2
V IN = 300 mVp-p,f=6MHz, V DEM6
Calculate S DEM =(V DEM2 –V DEM6 )/4
0.11 0.14 0.17 V/MHz
FM demodulation linearity
L DEM
L DEM = V DEM4 –(V DEM2 +V DEM6 )/2
V DEM2 –V DEM6
x 100
–3.5 0 +3.5 %
Carrier leakage
CL V IN = 300 mVp-p,f=4MHz
Ratio between 4 MHz component of T1 and
S DEM
–40 –35 dB
Noncorrelation detection level V CORR V IN = 500 mVp-p video signal (ramp waveform)
22
IRE
PB YNR characteristics
LP/EP (1)
GP-YNR1 V IN = 500 mVp-p noise test signal –30 dB
S/N difference with S6 on/off
2.5
dB
PB YNR characteristics
LP/EP (2)
GP-YNR2 V IN = 500 mVp-p noise test signal –30 dB
S/N difference with EDIT on/off; pin 36 low
1.5
dB
PB YNR characteristics
SP (3)
GP-YNR3 V IN = 500 mVp-p noise test signal, –30 dB
S6 edit on/off S/N ratio Pin36 low
1.5
dB
Playback through gain
G PB Apply V IN = 0.5 Vp-p video signal to pin 3, and
determine ratio between pin 28 output level and
input level
4.5 6.0 7.5 dB
Dropout detection (feedback)
level
L DOC T33A: 4 MHz, 300 mVp-p sine wave
T3A: 0.5 Vp-p video signal
Measure input signal level when T33A signal
drops momentarily and T28A output goes to 0
30 40 50 mVp-p
Nonlinear de-emphasis
characteristics (1)
GNL DEEM1 N IN = white 50% video + sine wave
f = 2 MHz, 158 mVp-p
Measure I/O response, and assign output level
described above as 0 dB
–6.0 –5.0 –4.0 dB
Nonlinear de-emphasis
characteristics (2)
GNL DEEM2 f = 2 MHz, 50 mVp-p
–9.0 –8.0 –7.0 dB
Double noise canceller
characteristics (1)
G WNC1 f = 2 MHz, 158 mVp-p
–2.3 –1.8 –1.3 dB
Double noise canceller
characteristics (2)
G WNC2 f = 2 MHz, 50 mVp-p
–6.0 –5.0 –4.0 dB
Continued on next page.
No.5472 - 4/13
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LA7386
Continued from preceding page.
Parameter
Symbol
Conditions
min typ max Unit
Double noise canceller
characteristics (3)
G WNC3 f = 2 MHz, 15.8 mVp-p
–10.5 –9.0 –7.5 dB
Double noise canceller
characteristics (4)
G WNC4 f = 3.58 MHz, 158 mVp-p
–2.0 –1.5 –1.0 dB
Double noise canceller
characteristics (5)
G WNC5 f = 3.58 MHz, 50 mVp-p
–5.1 –4.1 –3.1 dB
Double noise canceller
characteristics (6)
G WNC6 f = 3.58 MHz, 15.8 mVp-p
–10.5 –8.5 –7.0 dB
PIC-CTL hard response
characteristics (1)
G PH1 f = 1 MHz, 158 mVp-p
3.5 4.5 5.5 dB
PIC-CTL hard response
characteristics (2)
G PH2 f = 2 MHz, 158 mVp-p
7 8 9 dB
PIC-CTL soft response
characteristics (1)
G PS1 f = 1 MHz, 158 mVp-p
–5.5 –4.5 –3.5 dB
PIC-CTL soft response
characteristics (2)
G PS2 f = 2 MHz, 158 mVp-p
–9 –8 –7 dB
PIC-CTL center response
characteristics
G PC f = 2 MHz, 158 mVp-p
1.0 1.5 2.0 dB
DOC loop gain Y
G DOC T33A: 4 MHz, 300 mVp-p sine wave
T3A: 0.5 Vp-p video signal
I/O response 5H after instant when input at T33A
went to 0
–1.0 0 +1.0 dB
Sync tip level,
pedestal level,
white level measurement (PB)
L VOR With V IN = white 100% 0.5 Vp-p
Measure electric potential for each of the pin 28
video output sync tip, pedestal, and white peak,
and assign the measured values to L SYN ,L PED ,
and L WHI , respectively
—
Pseudo V insertion level (PB)
D
V DP Measure pin 28 DC voltage when5Visapplied
to pin 26, and assign the measured value to
L VDP , and calculate the difference with L SYN
D
–80 0 +80 mV
V DP =L SYN –L VDP
Pseudo H insertion level (PB)
D
H DP Measure pin 28 DC voltage when 2.5 V is applied
to pin 26, and assign the measured value to
L HDP , and calculate the difference with L PED
D
–200 –100 0 mV
H DP =L PED –L HDP
White insertion level (PB)
D W HP Measure pin 28 DC voltage when 1.3 V is applied
to pin 26, and assign the measured value to
L WHP , and calculate the difference with L WHI
D W HP =L WHI –L WHP
40 140 240 mV
Sync separation output level
V SYP V IN = 0.5 Vp-p video signal
Pin 26 output pulse peak value
4.0 4.2 4.4 Vp-p
Sync separation output pulse
width
PW SYP V IN = 0.5 Vp-p video signal
Pin 26 output pulse width
4.0 4.3 4.6 µs
Sync separation output leading
edge delay time
D
T SYP V IN = 0.5 Vp-p video signal, measure delay time
of output SYNC versus input SYNC
1.4 1.6 1.8 µs
[REC Mode Chroma]
REC chroma
Y/C separation output level
V OR-21 V IN = standard color bar signal (1 Vp-p)
Measure burst level at T21
170 220 270 mVp-p
REC chroma low-band
conversion output level
V OR-14 V IN = standard color bar signal (1 Vp-p)
Measure burst level at T14A
230 330 430 mVp-p
Burst emphasis amount
G BE V IN = standard color bar signal (1 Vp-p)
Ratio of burst level at T14A when S35A is off
(SP/EP) and on (LP)
5.5 6.0 6.5 dB
VXO oscillation level
V VXO-R V IN = standard color bar signal (1 Vp-p),
measure T18 output amplitude (with an FET
probe)
360 450 540 mVp-p
REC ACC characteristics 1
ACC R1 V IN = standard color bar signal (1 Vp-p),
input +6 dB chroma signal level only, measure
T14A burst level, and calculate ratio with V OR-14
+0.2 +0.5 dB
Continued on next page.
No.5472 - 5/13
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