Overview
The LA70011 and LA70011M are recording/playback
amplifiers for VHS VCR video signals. When used in
combination with the LA71000M and LA71500M Series
of video signal processing ICs, they permit Y/C recording
without current adjustment.
Features
Connecting the playback amplifier input directly to the
head reduces the number of external elements required.
The recording amplifiers use a fixed-current drive
configuration that yields stable recording characteristics
even under changing loads. They include built-in
automatic gain control circuits.
Using the same dimensions and pin assignments as the
LA70001 and LA70001M permits the use of the same
circuit boards as these earlier chips. The LA70011 can
also be mounted at the right end of an LA70020 socket.
Package Dimensions
unit: mm
3067-DIP24S
unit: mm
3112-MFP24S
Monolithic Linear IC
22798RM (OT) No. 5710-1/11
SANYO: DIP24S
[LA70011]
SANYO: MFP24S
[LA70011M]
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Recording/Playback Amplifier for VHS VCRs
LA70011, 70011M
Ordering number : EN5710A
Parameter
Symbol
Conditions
Ratings
Unit
Maximum power supply voltage
V
CC
max
7.0
V
Maximum power dissipation
Pd max
Ta
65C [LA70011]
600
mW
Ta
65C [LA70011M] 114.3
76.1
1.6 mm: glass epoxy
500
mW
Operating temperature
Topr
10 to +65
C
Storage temperature
Tstg
40 to +150
C
Specifications
Maximum Ratings
at Ta = 25C
Parameter
Symbol
Conditions
Ratings
Unit
Recommended power supply voltage
V
CC
5.0
V
Operating power supply voltage range
V
CC
op
4.8 to 5.5
V
Operating Conditions
at Ta = 25C
No. 5710-2/11
LA70011, 70011M
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
Playback Mode
Current drain
I
CCP
Current flowing into pin 13
44
53
60
mA
SP-L CH1
G
VP
1
56
59
62
dB
Voltage gain
SP-H CH2
G
VP
2
V
IN
= 38 mVp-p, f = 1 MHz
56
59
62
dB
EP-L CH3
G
VP
3
56
59
62
dB
EP-H CH4
G
VP
4
56
59
62
dB
Voltage gain difference
G
VP
1
G
VP
1 -- G
VP
2
1
0
+1
dB
G
VP
2
G
VP
3 -- G
VP
4
1
0
+1
dB
Intermode gain difference
G
VP
3
G
VP
3 -- G
VP
1
1
0
+1
dB
CH1
V
NIN1
Ratio of the output from a 1.1 MHz low pass
Converted input noise voltage
CH2
V
NIN2
filter to the output with no input under the
1.0
1.5
Vrms
CH3
V
NIN3
same conditions as those used for measuring
CH4
V
NIN4
voltage gain.
CH1
V
fp
1
Ratios of the output for V
IN
= 38 mVp-p and
Frequency characteristic
CH2
V
fp2
f = 7 MHz to the voltage gains G
VP
1, G
VP
2,
2.5
0
dB
CH3
V
fp3
G
VP
3, and G
VP
4.
CH4
V
fp4
CH1
V
HDP
1
Ratio of the 8 MHz (secondary) component of
Secondary harmonic distortion
CH2
V
HDP2
the output to its 4 MHz (primary) component
40
35
dB
CH3
V
HDP3
for V
IN
= 38 mVp-p and f = 4 MHz.
CH4
V
HDP4
CH1
V
OMP
1
Output level, for f = 1 MHz, at which the ratio
Maximum output level
CH2
V
OMP2
of the 3 MHz (tertiary) component to the
1.0
1.2
Vp-p
CH3
V
OMP3
1 MHz (primary) component is -30 dB.
CH4
V
OMP4
V
CR
1
Ratio of the output for V
IN
= 38 mVp-p and
40
35
dB
Crosstalk SP
f = 4 MHz to G
VP
1.
V
CR
2
Ratio of the output for V
IN
= 38 mVp-p and
40
35
dB
f = 4 MHz to G
VP
2.
V
CR
3
Ratio of the output for V
IN
= 38 mVp-p and
40
35
dB
Crosstalk EP
f = 4 MHz to G
VP
3.
V
CR
4
Ratio of the output for V
IN
= 38 mVp-p and
40
35
dB
f = 4 MHz to G
VP
4.
V
ODC
1
CH1 -- CH2
V
ODC
2
CH3 -- CH4
Output DC offset
V
ODC
3
CH1 -- CH3
100
0
+100
mV
V
ODC
4
CH2 -- CH4
V
ODC
5
CH1 -- CH4
V
ODC
6
CH2 -- CH3
Envelope detector output pin voltage
V
ENV
T6 DC level with no signal input.
0.0
08
1.3
V
V
ENVSP
1
T6 DC level at which T7A output level is
2.0
2.5
3.0
V
Envelope detector output pin voltage SP
175 mVp-p for f = 4 MHz.
V
ENVSP
2
T6 DC level at which T7A output level is
4.0
4.5
5.0
V
400 mVp-p for f = 4 MHz.
V
ENVEP
1
T6 DC level at which T7A output level is
2.0
2.5
3.0
V
Envelope detector output pin voltage EP
125 mVp-p for f = 4 MHz.
V
ENVEP
2
T6 DC level at which T7A output level is
4.0
4.5
5.0
V
300 mVp-p for f = 4 MHz.
Comparator output voltage
V
COMP
1
T2 DC level for V
IN
= 38 mVp-p and f = 4 MHz.
0.4
0.7
V
V
COMP
2
T2 DC level for V
IN
= 38 mVp-p and f = 4 MHz.
4.5
4.8
V
SW-Tr on resistance during playback
R
PON
17
DC difference for 1 and 2 mA current inputs.
4
6
R
PON
22
TR1-1
Normal
Trick1 :
*
1
3.2
5.0
V
Trick threshold level
TR1-2
Trick1
Normal
1.2
2.8
V
TR2-1
Normal
Trick2 :
*
1
0.0
0.8
V
TR2-2
Trick2
Normal
1.2
2.8
V
Operating Characteristics
at Ta = 25C
Continued on next page.
No. 5710-3/11
LA70011, 70011M
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
HA playback threshold level
HAP-1
SP
EP :
*
1
1.7
5.0
V
HAP-2
EPSP
0.0
1.3
V
SW30 threshold level
SW30-1
Lch
Hch :
*
1
1.2
5.0
V
SW30-2
Hch
Lch 0.0
0.8
V
Recording Mode
Current drain
I
CCR
Current input at pin 13.
52
59
66
mA
V
RSP
Output level for V
IN
= 400 mVp-p and
127
135
143
mVp-p
REC AGC AMP output level
f = 4 MHz.
V
REP
104
111
119
mVp-p
Intermode gain difference
GVR
VRSP/VREP
1.4
1.7
2.0
dB
V
AGC
1-SP Output level divided by V
RSP
or V
REP
for
0.5
1.0
dB
REC AGC AMP control characteristic
V
AGC
1-EP f = 4 MHz and V
IN
= 700 mVp-p.
V
AGC
2-SP Output level divided by V
RSP
or V
REP
for
1.0
0.5
dB
V
AGC
2-EP f = 4 MHz and V
IN
= 100 mVp-p.
REC AGC AMP frequency characteristic
V
FRS
Ratio of f = 7 MHz output to f = 1 MHz output
1
0
+1
dB
V
FRE
for V
IN
= 400 mVp-p.
*
2
V
HDRS
Ratio of the 8 MHz (secondary) component of
REC AGC AMP secondary primary distortion
V
HDRE
the output to its 4 MHz (primary) component
45
40
dB
for V
IN
= 400 mVp-p and f = 4 MHz.
REC AGC AMP maximum output level
V
MOSP
Output level, for f = 4 MHz, at which the
20
22
mApp
V
MOEP
secondary distortion is 35 dB.
REC AGC AMP muting attenuation
V
MRS
Output level divided by V
RSP
or V
REP
for
45
40
dB
V
MRE
f = 4 MHz and V
IN
= 400 mVp-p.
V
CYS
Output ratio (4M 629k)/4M for
REC AGC AMP cross modulation relative level
V
CYE
V
IN
= 400 mVp-p and f = 4 MHz at T9A and
45
40
dB
V
IN
= 2.4 Vp-p and f = 629 kHz at T10A.
HA REC threshold level
H
AR
-1
SP
EP :
*
1
1.7
5.0
V
H
AR
-2
EP
SP
0.0
1.3
V
REC MUTE threshold level
MUTE-1
MUTE OFF
MUTE ON
*
1
1.2
2.8
V
MUTE-2
MUTE ON
MUTE OFF
3.2
5.0
V
REC PB threshold level
PB-REC
PB
REC
*
1
1.2
5.0
V
REC-PB
REC
PB
0.0
0.8
V
Continued from preceding page.
Notes:
*
Before measuring the items under Playback Mode, input a 0 to 5.0 V trigger pulse to T5 (H-SYNC), the pin from which the LA70011 takes its T3
(HA) control switch timing.
*
The resistance between pins 13 and 14 must be accurate to within 1.0%.
*
1. These are voltage application points.
*
2. Apply a DC voltage of approximately 1.8 V to the AGC wave detector filter pin (pin 15) to fix the AGC amplifier gain.
*
3. Apply a DC voltage to the REC-CUR-Adj pin (pin 12) and adjust the output level.
No. 5710-4/11
LA70011, 70011M
Pin Descriptions
Pin Number
Pin Name
Standard DC Voltage (V)
Equivalent Circuit
Notes
1
TRICK-H
2
COMP-OUT
EP > SP ENV High
PB
H: min. 4.5 V
L: max. 0.7 V
REC
Open
3
HA (EP/SP)
3.0 V
1.0 V
Trick1
NORMAL
Trick2
1.0 V
EP
SP
4
SW30
1.0 V
Hch
Lch
5
H-SYNC
1.5 V
SYNC
H
L
Continued on next page.
No. 5710-5/11
LA70011, 70011M
Continued from preceding page.
Pin Number
Pin Name
Standard DC Voltage (V)
Equivalent Circuit
Notes
6
ENVDET-OUT
7
PB-OUT
8
20
GND
9
REC-Y-IN
PB
REC
See relevant
documents.
0
PB
REC
1.7
2.1
PB
REC
4.0
3.7
10
REC-C-IN
11
REC/MUTE/PB
PB
REC
4.0
3.7
3.0 V
1.0 V
REC
REC
MUTE
PB
Continued on next page.
No. 5710-6/11
LA70011, 70011M
Continued from preceding page.
Pin Number
Pin Name
Standard DC Voltage (V)
Equivalent Circuit
Notes
12
REC-CURRENT-
ADJ2
13
V
CC
PB
REC
2.5 V
2.5 V
14
REC-CURRENT-
ADJ1
PB
REC
5.0
4.5
15
16
19
21
24
17
22
REC-AGC-FILT
SP L-IN
SP H-IN
EP L-IN
EP H-IN
REC SP OUT
EP OUT
PB
PB
PB
REC
REC
REC
0
2.1
2.1
1.6
4.1
4.1
Continued on next page.
No. 5710-7/11
LA70011, 70011M
Continued from preceding page.
Usage Notes
Control Pin Logic
Switching Trick Mode with Pin 1
GND < pin 1 level - DC < 1.0 V: TRICK2
1.0 V < pin 1 level - DC < 3.0 V: NORMAL
3.0 V < pin 1 level - DC < 5.0 V: TRICK1
NORMAL Mode
Two channels selected with pin 3 (EP/SP): ON
Envelope comparator: OFF
TRICK1 and TRICK2 Modes
All four channels: ON
Envelope comparator: OFF
Difference between TRICK1 and TRICK2 modes (See the Block Diagram.)
TRICK1 is a special playback mode using the following path
Envelope comparator OUT (pin 2)
Servo (microcontroller)
Pin 3 (HA)
HA-SW
TRICK2 provides SP searching
Envelope comparator OUT
HA-SW
HA-SW (EP/SP mode switch): Pin 3
GND < pin 3 level - DC < 1.5 V: SP mode
1.5 V < pin 3 level - DC < 5 V: EP mode
Pin Number
Pin Name
Standard DC Voltage (V)
Equivalent Circuit
Notes
18
23
PB FILT
PB
REC
0
2.5
Synchronization of HA Switching Timing during Playback with H-SYNC Signal
During playback, the LA70011's video circuits synchronize the HA-SW switching timing shown in the following figure
with the H-SYNC signal from pin 5. (Other EP/SP switching takes place in real time.)
Comparator Output: Pin 2
EP envelope > SP envelope: High (min. 4.0 V)
EP envelope < SP envelope: Low (max. 0.7 V)
H-SYNC Input: Pin 5
Pin 5 level - DC > 1.5 V: H-SYNC interval
Playback:
-- Determines timing of HA switching (EP/SP)
-- Determines timing of special playback
Recording:
-- Serves as gate pulse for REC-AGC-AMP SYNC unit
REC/REC-MUTE/PB Switching: Pin 11
GND < pin 11 level - DC < 1.0 V: PB mode
1.0 V < pin 11 level - DC < 3.0 V: REC mode, REC-MUTE
3.0 V < pin 11 level - DC < 5.0 V: REC mode
No. 5710-8/11
LA70011, 70011M
Envelope Detector Characteristic: Pin 6
The LA70011 includes a built-in playback signal envelope detector circuit for use in automating tracking adjustment.
REC AMP Gain Control
The LA70011 eliminates recording current adjustment by adding an automatic gain control circuit to the recording
amplifier. It is also possible to change the recording current with the following methods.
REC-CURRENT-ADJ2 Open
The internal bias forces the DC level at pin 12 to 1/2 V
CC
(that is, approximately 2.5 V), and R
O
1 determines the
recording current.
Design values
R
O
1 = 1.5 k
= 16.0 mA (SP) (per channel)
R
O
1 = 1.5 k
=12.7 mA (EP)
REC-CURRENT-ADJ2 Used
Applying a DC control voltage between 1 and 4 V to pin 12 adjusts the figure determined by R
O
1 between 6.0 dB and
+3.5 dB.
No. 5710-9/11
LA70011, 70011M
REC-CURRENT (mAp-p) design values
Pin 6 level - detector
DC level (V)
Pin 7 level - playback output level (mVp-p)
Envelope detector voltage characteristic
EP, with 18k
resistor on pin 6
SP, with 18k
resistor on pin 6
Note: One possible circuit for applying this voltage is the following, which provides 9 modes between 1 and 4 V.
No. 5710-10/11
LA70011, 70011M
PS No. 5710-11/11
LA70011, 70011M
Block Diagram
This catalog provides information as of February, 1998. Specifications and information herein are subject to
change without notice.
s
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.
s
Anyone purchasing any products described or contained herein for an above-mentioned use shall:
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:
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.
s
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.
PDF 
ZIP