Overview
The LA70020 and LA70020M are 6-head amplifiers
adding hi-fi recording/playback amplifiers to the
LA70011/LA70011M 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
Combining hi-fi and video amplifiers onto a single chip
saves space on the circuit board.
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.
The LA70020, encapsulated in DIP package, can be
mounted at the right end of the LA70001 and LA70011
sockets. The LA70020M lacks this flexibility because its
MFP package has a different pin pitch.
Package Dimensions
unit: mm
3170-DIP36S 400mil
unit: mm
3129-MFP36SD, MFP36SLF
Monolithic Linear IC
22798RM (OT) No. 5711-1/13
SANYO: DIP36S
[LA70020]
SANYO: MFP36SD
SANYO: MFP36SLF
[LA70020M]
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
LA70020, 70020M
Ordering number : EN5711A
Parameter
Symbol
Conditions
Ratings
Unit
Maximum power supply voltage
V
CC
max
6.0
V
Ta
65C [LA70020]
1000
mW
Maximum power dissipation
Pd max
Ta
65C [LA70020M]
1000
mW
114.3
76.1
1.6 mm: glass epoxy
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 supply voltage
V
CC
5.0
V
Operating supply voltage range
V
CC
op
4.8 to 5.3
V
Operating Conditions
at Ta = 25C
No. 5711-2/13
LA70020, 70020M
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
V
IN
= 38 mVp-p, f = 4 MHz
56
59
62
dB
Voltage gain
SP-H CH2
G
VP
2
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
T12 DC level with no signal input.
0
0.8
1.4
V
V
ENVSP
1
T12 DC level at which T13A output level is
2.0
2.5
3.0
V
Envelope detector output pin voltage SP
150 mVp-p for f = 4 MHz.
V
ENVSP
2
T12 DC level at which T13A output level is
4.0
4.5
5.0
V
400 mVp-p for f = 4 MHz.
V
ENVEP
1
T12 DC level at which T13A 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
T8 DC level for V
IN
= 38 mVp-p and f = 4 MHz.
0.4
0.7
V
V
COMP
2
T8 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
24
DC difference for 1 and 2 mA current inputs.
4
6
R
PON
29
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
Electrical Characteristics
at Ta = 25C (Video Circuits)
Continued on next page.
No. 5711-3/13
LA70020, 70020M
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 T11 (H-SYNC), the pin from which the LA70020 takes its T9
(HA) control switch timing.
*
The resistance between pins 19 and 20 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 21) to fix the AGC amplifier gain.
*
3. Apply a DC voltage to the REC-CUR-Adj pin (pin 18) and adjust the output level.
No. 5711-4/13
LA70020, 70020M
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
Playback Mode
Current drain
HI
CCP
Current flowing into pin 36
20
25
30
mA
Voltage gain
CH1
HG
VP
1
V
IN
= 20 mVp-p, f = 1.5 MHz
72.5
75.5
78.5
dB
CH2
HG
VP
2
72.5
75.5
78.5
dB
Voltage gain difference
HG
VP
HG
VP
1 -- HG
VP
2
2
0
+2
dB
Intermode gain difference
HGEP
Voltage gain difference between SP and EP
1.7
2.4
3.1
dB
modes.
*
1
Ratio of the output from a 1.1-MHz low pass
Converted input noise voltage
CH1
HV
NIN1
filter to the output with no input under the
0.8
1.2
Vrms
CH2
HV
NIN2
same conditions as those used for measuring
voltage gain.
Frequency characteristic
CH1
HV
fp1
Ratios of the output for V
IN
= 20 mVp-p and f =
3
1
dB
CH2
HV
fp2
2 MHz to the voltage gains HG
VP
1 and HG
VP
2.
CH1
HV
HDP
1 Ratio of the 3-MHz (secondary) component of
Secondary harmonic distortion
CH2
HV
HDP2
the output to its 1.5-MHz (primary) component
50
40
dB
for V
IN
= 20 mVp-p and f = 1.5 MHz.
CH1
HV
OMP
1 Output level, for f = 1.5 MHz, at which the
Maximum output level
CH2
HV
OMP2
ratio of the 4.5 MHz (secondary) component
2
Vp-p
to the 1.5 MHz (primary) component is 30 dB.
V
HCR
1
Ratio of the output for V
IN
= 20 mVp-p and
40
35
dB
Crosstalk SP
f = 1.5 MHz to HG
VP
1.
V
HCR
2
Ratio of the output for V
IN
= 20 mVp-p and
40
35
dB
f = 1.5 MHz to HG
VP
2.
V
HCR
3
Ratio of the output for V
IN
= 20 mVp-p and
40
35
dB
Crosstalk EP
f = 1.5 MHz to HG
VP
1.
V
HCR
4
Ratio of the output for V
IN
= 20 mVp-p and
40
35
dB
f = 1.5 MHz to HG
VP
2.
Output DC offset SP mode
V
ODC
1
CH1 -- CH2
30
0
+30
mV
Output DC offset EP mode
V
ODC
2
CH1 -- CH2
50
0
+50
mV
HA threshold level
H
HAP-1
SP
EP :
*
1
1.7
5.0
V
H
HAP-2
EP
SP
0.0
1.3
V
SW30 threshold level
H
SW30-1
Lch
Hch :
*
1
1.2
5.0
V
H
SW30-2
Hch
Lch
0.0
0.8
V
SW-Tr on resistance during playback
H
RPON
DC difference for 1 and 2 mA current inputs.
4
6
Recording Mode
Current drain
H
ICCR
Current input at pin 36.
55
65
75
mA
REC AGC AMP output level
H
VOR
Output level for V
IN
= 180 mVp-p and
270
280
290
mVp-p
f = 1.5 MHz.
HV
AGC1
Output level divided by HV
OR
for f = 1.5 MHz
0.2
0.5
dB
REC AGC AMP control characteristic
and V
IN
= 360 mVp-p.
V
AGC2
Output level divided by HV
OR
for f = 1.5 MHz
0.5
0.2
dB
and V
IN
= 90 mVp-p.
REC AGC AMP muting attenuation
HV
MR
Output level divided by HV
OR
for f = 4 MHz
40
dB
and V
IN
= 180 mVp-p.
REC AGC AMP cross modulation relative
HCMD04
0.4-MHz component for T3A V
IN
= 90 mVp-p,
40
dB
level for 0.4-MHz component
f = 1.3 MHz + V
IN
= 270 mVp-p, f = 1.7 MHz.
REC AGC AMP cross modulation relative
HCMD09
0.9-MHz component for T3A V
IN
= 90 mVp-p,
40
dB
level for 0.9-MHz component
f = 1.3 MHz + V
IN
= 270 mVp-p, f = 1.7 MHz.
REC MUTE threshold level
H
MUTE1
MUTE OFF
MUTE ON
*
1
1.2
2.8
V
H
MUTE2
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
Electrical Characteristics
at Ta = 25C (Hi-Fi Circuits)
Note : These are voltage application points.
No. 5711-5/13
LA70020, 70020M
Pin Descriptions
Pin Number
Pin Name
Standard DC Voltage (V)
Equivalent Circuit
Notes
1
HiFi
PB-FM-OUT
PB
REC
2.6
4.0
3.2 V
SW30 MUTE
1.0
ON
Hch
OFF
Lch
2
31
HiFi
GND
3
HiFi
REC-FM-IN
PB
REC
0
3.0
4
HiFi
REC-AGC-Filt
PB
REC
0
1.2
5
HiFi
REC-CURRENT-
ADJ
PB
REC
0.7
1.5
6
HiFi
RF-SW
(REC-MUTE)
Continued on next page.
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