NTSC Video Signal Processing LSI for VCRs
Overview
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.
Package Dimensions
unit : mm
3170-DIP36S
SANYO : DIP36S
[LA7386]
Features
.
Includes all functions required for video signal processing in an NTSC VCR.
.
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.
Ordering number: EN 5472
Monolithic Linear IC
LA7386
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
Maximum Ratings
at Ta = 25C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
V
CC
max
7.0
V
Allowable power dissipation
Pdmax
Ta
%
65C
1070
mW
Operating temperature
Topr
10 to +65
C
Storage temperature
Tstg
40 to +150
C
Operating Conditions
at Ta = 25C
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 = 25C, V
CC
= 5 V
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
s
Sync separation output leading
edge delay time
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
s
Sync separation threshold level
TH
SYR
Gradually attenuate the input level, measure input
level at point when output pulse width widens 1
s 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.
LA7386
No.5472 - 2/13
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
mV
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
x 100
3
0
+2
%
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.
LA7386
No.5472 - 3/13
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 = 4 MHz, output voltage
0.9
1.05
1.15
V
FM demodulation sensitivity
S
DEM
V
IN
= 300 mVp-p, f = 2 MHz, V
DEM2
V
IN
= 300 mVp-p, f = 6 MHz, 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 = 4 MHz
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.
LA7386
No.5472 - 4/13
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)
V
DP
Measure pin 28 DC voltage when 5 V is applied
to pin 26, and assign the measured value to
L
VDP
, and calculate the difference with L
SYN
V
DP
= L
SYN
L
VDP
80
0
+80
mV
Pseudo H insertion level (PB)
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
H
DP
= L
PED
L
HDP
200
100
0
mV
White insertion level (PB)
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
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
s
Sync separation output leading
edge delay time
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
s
[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.
LA7386
No.5472 - 5/13
Continued from preceding page.
Parameter
Symbol
Conditions
min
typ
max
Unit
REC ACC characteristics 2
ACC
R2
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
0.5
0.1
dB
REC ACC killer input level
V
ACCK-ON
V
IN
= standard color bar signal (1 Vp-p),
lower the chroma signal, and measure the input
burst level at the point where output at T14A
ceases, and calculate the ratio with the standard
input level
30
27
24
dB
REC ACC killer output level
VO
ACCK
Use a spectrum analyzer to measure the output
level at T14A in the killer state described
previously; ratio with V
OR-14
60
50
dB
Input level for REC ACC killer
return
V
ACCKOFF
Starting from the killer state described previously,
gradually raise the input chroma level and
measure the input burst level when output is
generated at T14A and calculate the ratio with the
standard input level
24
21
18
dB
VXO control sensitivity
S
VXO
Measure the pin 16 DC voltage when a standard
color bar signal (1 Vp-p) is input ... V
O
Measure the frequency at T18A when V
0
is
applied to pin 16 from the external power
supply...f
1
Measure the frequency at T18A when V
O
+ 10
mV is applied to pin 16 ...f
2
S
VXO
=
f
2
f
1
10
Hz/mV
3.3
4.9
7.5
Hz/mV
REC APC pull-in range 1
f
APC1
Input a 50% white signal overlapping with a
3.5795 MHz, 300 mVp-p continuous wave. After
confirming that there is output at T14A, increase
the frequency of the CW until the output at T14A
stops, and then gradually reduce the frequency
until output appears again at T14A; that CW
frequency is f
1
.
f
APC1
= f
1
3579545 (Hz)
350
440
Hz
REC APC pull-in range 2
f
APC2
In the same manner, reduce the frequency of the
CW until the output at T14A stops, and then
gradually increase the frequency until output
appears again at T14A; that CW frequency is f
2
.
f
APC2
= f
2
3579545 (Hz)
900
350
Hz
BGP delay time for APC ACC
t
D
(N)
Input a standard color bar signal overlapping with
a 3.98 MHz, 300 mVp-p continuous wave, and
measure waveforms at T26 and T16.
4.8
s
BGP pulse width for APC ACC
t
W
(N)
2.5
s
REC AFC pull-in range 1
f
AFC1
Input a string of pulses (negative polarity) at
286 mV, 15.7 kHz with a width of 5 s. After
increasing the frequency of the pulse string until
the waveform at pin 20 is disrupted, then reduce
the frequency until the waveform at pin 20 is
normal again; that pulse string frequency is f
1
f
AFC1
= f
1
15.734 (kHz)
+1.0
+7.0
kHz
Continued on next page.
LA7386
No.5472 - 6/13
Continued from preceding page.
Parameter
Symbol
Conditions
min
typ
max
Unit
REC AFC pull-in range 2
f
AFC2
In the same manner, after reducing the frequency
of the pulse string until the waveform at pin 20 is
disrupted, then increase the frequency until the
waveform at pin 20 is normal again; that pulse
string frequency is f
2
f
AFC2
= f
2
15.734 (kHz)
6.3
1.0
kHz
[PB Mode Chroma]
PB chroma video output level
Vop-28
In PB, SP mode, input a continuous wave from
T14A 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 T3A and measure the T28A burst
level
210
260
310
mVp-p
PB chroma pin 21 output level
Vop-21
Measure the T21 burst level under the same
conditions as for Vop-28
170
200
230
mVp-p
PB ACC characteristics 1
ACC
P1
Input the input chroma level at +6 dB under the
same conditions as for Vop-28 and measure the
T21 burst level, and calculate the ratio with
Vop-21
+0.5
+0.8
dB
PB ACC characteristics 2
ACC
P2
Input the input chroma level at 6 dB under the
same conditions as for Vop-28 and measure the
T21 burst level, and calculate the ratio with
Vop-21
0.5
0.2
dB
PB killer input level
V
ACK-P
Lower the input chroma level under the same
conditions as for Vop-28 and measure the input
burst level at the point where T21 chroma output
ceases. (Calculate ratio with standard input of
50 mVp-p)
55
40
dB
PB killer chroma output level
V
OACK-P
Use a spectrum analyzer to measure the T28
chroma output level in the killer state described
previously. Calculate ratio with Vop-28.
44
40
dB
PB main converter carrier leak
C
LP
Monitor T28A with a spectrum analyzer under the
same conditions as for Vop-28 and calculate the
ratio between the 3.58 MHz component and the
4.21 MHz carrier leak component.
40
33
dB
Burst de-emphasis amount
G
BD
From T14A, input a 629 kHz 50 mVp-p
continuous wave; from T3A, input a 50% white
signal, and calculate the ratio between the output
level during the T21 burst interval and the output
level during other intervals
4.35
4.6
4.85
dB
PB XO output level
V
XO-P
In PB mode, measure the T18 output level with
an FET probe
480
610
750
mVp-p
PB XO oscillation frequency
variation
f
XO
In PB mode, measure the frequency at T18...f
f
XO
= f 3579545 (Hz)
7
0
+7
Hz
SLD detection current 1
I
SLD1
In PB mode, with S20: 3 and S19: off, input a
4 MHz 300 mVp-p continuous wave from T33A,
input a 50% white signal from T3A, and measure
the wave peak at T19A
I
SLD1
= VOS1/1 k
110
160
210
A
Continued on next page.
LA7386
No.5472 - 7/13
Continued from preceding page.
Parameter
Symbol
Conditions
min
typ
max
Unit
SLD detection current 2
I
SLD2
In PB mode, with S20: 3 and S19: off, input a
4 MHz 300 mVp-p continuous wave from T33A,
input a 50% white signal from T3A, and measure
the wave peak at T19A
I
SLD2
= VOS2/1 k
110
160
210
A
4.2 V regulator operation
confirmation (1)
V42(R)
SW25
1 measure T25 DC level REC mode
4.2
V
DC
4.2 V regulator operation
confirmation (2)
V42(P1)
SW25
1 measure T25 DC level PB mode
4.2
V
DC
4.2 V regulator operation
confirmation (3)
V42(P2)
SW25
2 measure T25 DC level PB mode
4.2
V
DC
LA7386
No.5472 - 8/13
Test Circuit Diagram
Unit (resistance:
, capacitance: F)
LA7386
No.5472 - 9/13
LA7386
Mode
T
able
Mode
Edit
Y/C
separation
by
comb
filter
Y
(REC)
Y/C
separation
by
comb
filter
C
(REC)
1/2
f
H
shift
(REC)
Burst
emphasis
(REC)
NL
emphasis
(REC)
YNR
(REC)
YNR
(PB)
High-pass,
NC
double
type
(PB)
CNR
(PB)
PIC.CTL
(PB)
Detail
enhancer
(REC)
APC.
DET
.
(PB)
Crosstalk
correlation
switching
(PB)
SP
Of
f
(normal)
C
XX
C
X
K0.5
LIM
3IRE
K0.2
LIM
5IRE
CC
C
(variable)
Strong
(US)
Medium
Before
comb
C
On
(1)
pin
23
H
C
XX
C
XX
X
C
X(of
f)
C
Medium
W
eak
Before
C
On
(2)
pin
12
H
C
XX
C
XX
X
CC
Mid-point
Medium
W
eak
Before
C
LP
Of
f
(normal)
CC
C
X
C
K0.65
LIM
5IRE
K0.5
LIM
1
1IRE
CC
C
Strong
Medium
After
comb
X
On
(1)
pin
23
H
C
X
C
X
C
K0.25
LIM
3
K0.2
LIM
5
C
X
C
Medium
W
eak
After
X
On
(2)
pin
12
H
C
X
C
X
C
K0.25
LIM
3
K0.2
LIM
5
CC
Mid-point
Medium
W
eak
After
X
EP
Of
f
(normal)
CC
C
C
C
K0.65
LIM
5IRE
K0.5
LIM
5
CC
C
Strong
Medium
After
comb
X
On
(1)
pin
23
H
C
X
CC
C
K0.25
LIM
3
K0.2
LIM
5
C
X
C
Medium
W
eak
After
X
On
(2)
pin
12
H
C
X
CC
C
K0.25
LIM
3
K0.2
LIM
5
CC
Mid-point
Medium
W
eak
After
X
LA7386
No.5472 - 10/13
Control Pin Function Chart
Pin No.
L
M
H
Pin 4
R/P switching
Open
REC mode
Over 3.8 V
PB mode
Pin 6
SP/EP switching
Open
EP mode
Over 3.9 V
SP mode
Pin 12
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
EDIT2 on
Pin 16
Special playback switching
Open
Before comb in SP
Over 3.5 V
(over 200 A)
After comb in SP
Pin 23
EDIT1
US
Under 1.5V
US specifications
Open
Over 2.5 V
EDIT1 on
Pin 27
QV, QH, CHAR
Refer to pin 27,
QV, QH, CHAR,
insertion diagram
Pin 34
DOC STOP control
Open
Normal mode
Over 3.9 V
DOC STOP
Pin 35
ROTARY pulse
LP switching
SW30
Tape
speed
SP or EP mode
LP mode
LA7386
Pin 27
QV, QH, CHAR, insertion
Pin 28 output
Pin 27 control voltage
Through
(V)
LA7386
No.5472 - 11/13
Application Circuit Examples
Unit (resistance:
, capacitance: F)
LA7386
No.5472 - 12/13
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.
LA7386
No.5472 - 13/13
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