SANYO LA70020

Ordering number : EN5711A
Monolithic Linear IC
LA70020, 70020M
Recording/Playback Amplifier for VHS VCRs
Overview
Package Dimensions
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.
unit: mm
3170-DIP36S 400mil
[LA70020]
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.
SANYO: DIP36S
unit: mm
3129-MFP36SD, MFP36SLF
[LA70020M]
SANYO: MFP36SD
SANYO: MFP36SLF
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum power supply voltage
Symbol
Conditions
VCC max
6.0
Ta ≤ 65°C [LA70020]
Maximum power dissipation
Pd max
Ratings
Ta ≤ 65°C [LA70020M]
114.3 × 76.1 × 1.6 mm: glass epoxy
Unit
V
1000
mW
1000
mW
Operating temperature
Topr
–10 to +65
°C
Storage temperature
Tstg
–40 to +150
°C
Ratings
Unit
Operating Conditions at Ta = 25°C
Parameter
Symbol
Recommended supply voltage
VCC
Operating supply voltage range
VCCop
Conditions
5.0
V
4.8 to 5.3
V
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
22798RM (OT) No. 5711-1/13
LA70020, 70020M
Electrical Characteristics at Ta = 25°C (Video Circuits)
Parameter
Symbol
Conditions
Ratings
min
typ
Unit
max
Playback Mode
Current drain
Voltage gain
ICCP
Current flowing into pin 13
44
53
60
mA
SP-L CH1
GVP1
VIN = 38 mVp-p, f = 4 MHz
56
59
62
dB
SP-H CH2
GVP2
56
59
62
dB
EP-L CH3
GVP3
56
59
62
dB
EP-H CH4
GVP4
56
59
62
dB
∆GVP1
GVP1 — GVP2
–1
0
+1
dB
∆GVP2
GVP3 — GVP4
–1
0
+1
dB
∆GVP3
GVP3 — GVP1
–1
0
+1
dB
Converted input noise voltage
CH1
CH2
CH3
CH4
VNIN1
VNIN2
VNIN3
VNIN4
Ratio of the output from a 1.1 MHz low pass
filter to the output with no input under the
same conditions as those used for measuring
voltage gain.
1.0
1.5
µVrms
Frequency characteristic
CH1
CH2
CH3
CH4
∆Vfp1
∆Vfp2
∆Vfp3
∆Vfp4
Ratios of the output for VIN = 38 mVp-p and
f = 7 MHz to the voltage gains GVP1, GVP2,
GVP3, and GVP4.
Secondary harmonic distortion
CH1
CH2
CH3
CH4
∆VHDP1
∆VHDP2
∆VHDP3
∆VHDP4
Ratio of the 8 MHz (secondary) component of
the output to its 4 MHz (primary) component
for VIN = 38 mVp-p and f = 4 MHz.
Maximum output level
CH1
CH2
CH3
CH4
∆VOMP1
∆VOMP2
∆VOMP3
∆VOMP4
Output level, for f = 1 MHz, at which the ratio
of the 3 MHz (tertiary) component to the
1 MHz (primary) component is -30 dB.
Voltage gain difference
Intermode gain difference
Trick threshold level
1.2
dB
Vp-p
–35
dB
VCR2
Ratio of the output for VIN = 38 mVp-p and
f = 4 MHz to GVP2.
–40
–35
dB
VCR3
Ratio of the output for VIN = 38 mVp-p and
f = 4 MHz to GVP3.
–40
–35
dB
VCR4
Ratio of the output for VIN = 38 mVp-p and
f = 4 MHz to GVP4.
–40
–35
dB
–100
0
+100
mV
∆VODC1
CH1 — CH2
∆VODC2
CH3 — CH4
∆VODC3
CH1 — CH3
∆VODC4
CH2 — CH4
∆VODC5
CH1 — CH4
∆VODC6
CH2 — CH3
0
0.8
1.4
V
VENVSP1
T12 DC level at which T13A output level is
150 mVp-p for f = 4 MHz.
2.0
2.5
3.0
V
VENVSP2
T12 DC level at which T13A output level is
400 mVp-p for f = 4 MHz.
4.0
4.5
5.0
V
VENVEP1
T12 DC level at which T13A output level is
125 mVp-p for f = 4 MHz.
2.0
2.5
3.0
V
VENVEP2
T6 DC level at which T7A output level is
300 mVp-p for f = 4 MHz.
4.0
4.5
5.0
V
0.4
0.7
V
VENV
Envelope detector output pin voltage EP
SW-Tr on resistance during playback
1.0
–35
–40
Envelope detector output pin voltage SP
Comparator output voltage
–40
dB
Ratio of the output for VIN = 38 mVp-p and
f = 4 MHz to GVP1.
Crosstalk EP
Envelope detector output pin voltage
0
VCR1
Crosstalk SP
Output DC offset
–2.5
T12 DC level with no signal input.
VCOMP1
T8 DC level for VIN = 38 mVp-p and f = 4 MHz.
VCOMP2
T8 DC level for VIN = 38 mVp-p and f = 4 MHz.
RPON24
RPON29
DC difference for 1 and 2 mA current inputs.
4.5
4.8
4
V
6
Ω
TR1-1
Normal → Trick1 : *1
3.2
5.0
V
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
Continued on next page.
No. 5711-2/13
LA70020, 70020M
Continued from preceding page.
Parameter
HA playback threshold level
SW30 threshold level
Symbol
Conditions
Ratings
min
typ
max
Unit
HAP-1
SP → EP : *1
1.7
5.0
HAP-2
EPSP
0.0
1.3
V
SW30-1
Lch → Hch : *1
1.2
5.0
V
SW30-2
Hch → Lch
0.0
0.8
V
ICCR
Current input at pin 13.
52
59
66
mA
VRSP
Output level for VIN = 400 mVp-p and
f = 4 MHz.
127
135
143
mVp-p
104
111
119
mVp-p
1.4
1.7
2.0
dB
0.5
1.0
dB
V
Recording Mode
Current drain
REC AGC AMP output level
VREP
Intermode gain difference
REC AGC AMP control characteristic
∆GVR
VRSP/VREP
∆VAGC1-SP Output level divided by VRSP or VREP for
∆VAGC1-EP f = 4 MHz and VIN = 700 mVp-p.
∆VAGC2-SP Output level divided by VRSP or VREP for
∆VAGC2-EP f = 4 MHz and VIN = 100 mVp-p.
–1.0
–0.5
dB
–1
0
+1
dB
–45
–40
dB
∆VFRS
∆VFRE
Ratio of f = 7 MHz output to f = 1 MHz output
for VIN = 400 mVp-p. *2
∆VHDRS
∆VHDRE
Ratio of the 8 MHz (secondary) component of
the output to its 4-MHz (primary) component
for VIN = 400 mVp-p and f = 4 MHz.
REC AGC AMP maximum output level
∆VMOSP
∆VMOEP
Output level, for f = 4 MHz, at which the
secondary distortion is –35 dB.
REC AGC AMP muting attenuation
∆VMRS
∆VMRE
Output level divided by VRSP or VREP for
f = 4 MHz and VIN = 400 mVp-p.
–45
–40
dB
REC AGC AMP cross modulation relative level
∆VCYS
∆VCYE
Output ratio (4M +/ 629k)/4M for
VIN = 400 mVp-p and f = 4 MHz at T9A and
VIN = 2.4 Vp-p and f = 629 kHz at T10A.
–45
–40
dB
HAR-1
SP → EP : *1
1.7
5.0
V
HAR-2
EP → SP
0.0
1.3
V
REC AGC AMP frequency characteristic
REC AGC AMP secondary primary distortion
HA REC threshold level
REC MUTE threshold level
REC PB threshold level
20
22
mApp
MUTE-1
MUTE OFF → MUTE ON *1
1.2
2.8
V
MUTE-2
MUTE ON → MUTE OFF
3.2
5.0
V
PB-REC
PB → REC *1
1.2
5.0
V
REC-PB
REC → PB
0.0
0.8
V
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. 5711-3/13
LA70020, 70020M
Electrical Characteristics at Ta = 25°C (Hi-Fi Circuits)
Parameter
Symbol
Conditions
Ratings
min
typ
Unit
max
Playback Mode
Current drain
Voltage gain
HICCP
Current flowing into pin 36
CH1
HGVP1
VIN = 20 mVp-p, f = 1.5 MHz
CH2
HGVP2
20
25
30
72.5
75.5
78.5
mA
dB
72.5
75.5
78.5
dB
∆HGVP
HGVP1 — HGVP2
–2
0
+2
dB
∆HGEP
Voltage gain difference between SP and EP
modes. *1
1.7
2.4
3.1
dB
Converted input noise voltage
CH1
CH2
HVNIN1
HVNIN2
Ratio of the output from a 1.1-MHz low pass
filter to the output with no input under the
same conditions as those used for measuring
voltage gain.
0.8
1.2
µVrms
Frequency characteristic
CH1
CH2
∆HVfp1
∆HVfp2
Ratios of the output for VIN = 20 mVp-p and f =
2 MHz to the voltage gains HGVP1 and HGVP2.
Secondary harmonic distortion
CH1
CH2
∆HVHDP1 Ratio of the 3-MHz (secondary) component of
∆HVHDP2 the output to its 1.5-MHz (primary) component
for VIN = 20 mVp-p and f = 1.5 MHz.
Maximum output level
CH1
CH2
∆HVOMP1 Output level, for f = 1.5 MHz, at which the
∆HVOMP2 ratio of the 4.5 MHz (secondary) component
to the 1.5 MHz (primary) component is –30 dB.
Voltage gain difference
Intermode gain difference
–3
–1
–50
dB
–40
2
dB
Vp-p
VHCR1
Ratio of the output for VIN = 20 mVp-p and
f = 1.5 MHz to HGVP1.
–40
–35
dB
VHCR2
Ratio of the output for VIN = 20 mVp-p and
f = 1.5 MHz to HGVP2.
–40
–35
dB
VHCR3
Ratio of the output for VIN = 20 mVp-p and
f = 1.5 MHz to HGVP1.
–40
–35
dB
VHCR4
Ratio of the output for VIN = 20 mVp-p and
f = 1.5 MHz to HGVP2.
–40
–35
dB
Crosstalk SP
Crosstalk EP
Output DC offset SP mode
∆VODC1
CH1 — CH2
–30
0
+30
mV
Output DC offset EP mode
∆VODC2
CH1 — CH2
–50
0
+50
mV
HHAP-1
SP → EP : *1
1.7
5.0
V
HHAP-2
EP → SP
0.0
1.3
V
HA threshold level
SW30 threshold level
SW-Tr on resistance during playback
HSW30-1
Lch → Hch : *1
1.2
5.0
V
HSW30-2
Hch → Lch
0.0
0.8
V
HRPON
DC difference for 1 and 2 mA current inputs.
4
6
Ω
HICCR
Current input at pin 36.
55
65
75
mA
HVOR
Output level for VIN = 180 mVp-p and
f = 1.5 MHz.
270
280
290
mVp-p
0.2
0.5
dB
Recording Mode
Current drain
REC AGC AMP output level
∆HVAGC1
Output level divided by HVOR for f = 1.5 MHz
and VIN = 360 mVp-p.
∆VAGC2
Output level divided by HVOR for f = 1.5 MHz
and VIN = 90 mVp-p.
∆HVMR
Output level divided by HVOR for f = 4 MHz
and VIN = 180 mVp-p.
–40
dB
REC AGC AMP control characteristic
REC AGC AMP muting attenuation
–0.5
–0.2
dB
REC AGC AMP cross modulation relative
level for 0.4-MHz component
HCMD04
0.4-MHz component for T3A VIN = 90 mVp-p,
f = 1.3 MHz + VIN = 270 mVp-p, f = 1.7 MHz.
–40
dB
REC AGC AMP cross modulation relative
level for 0.9-MHz component
HCMD09
0.9-MHz component for T3A VIN = 90 mVp-p,
f = 1.3 MHz + VIN = 270 mVp-p, f = 1.7 MHz.
–40
dB
REC MUTE threshold level
REC PB threshold level
HMUTE1
MUTE OFF → MUTE ON *1
1.2
2.8
V
HMUTE2
MUTE ON → MUTE OFF
3.2
5.0
V
PB-REC
PB → REC *1
1.2
5.0
V
REC-PB
REC → PB
0.0
0.8
V
Note : These are voltage application points.
No. 5711-4/13
LA70020, 70020M
Pin Descriptions
Pin Number
1
Pin Name
2.6
REC
4.0
PB
0
REC
3.0
PB
0
REC
1.2
PB
0.7
REC
1.5
Notes
HiFi
2
HiFi
GND
4
PB
Equivalent Circuit
PB-FM-OUT
31
3
Standard DC Voltage (V)
HiFi
REC-FM-IN
HiFi
REC-AGC-Filt
HiFi
5
REC-CURRENTADJ
SW30 MUTE
ON
HiFi
6
3.2 V
Hch
RF-SW
(REC-MUTE)
OFF
1.0
Lch
Continued on next page.
No. 5711-5/13
LA70020, 70020M
Continued from preceding page.
Pin Number
Pin Name
Standard DC Voltage (V)
Equivalent Circuit
Notes
Trick1
3.0 V
7
NORMAL
TRICK-H
1.0 V
Trick2
PB
8
H: min. 4.5 V
L: max. 0.7 V
COMP-OUT
EP > SP ENV High
REC
Open
EP
9
HA (EP/SP)
1.0 V
SP
Hch
10
SW30
1.0 V
Lch
SYNC
H
11
H-SYNC
1.5 V
L
Continued on next page.
No. 5711-6/13
LA70020, 70020M
Continued from preceding page.
Pin Number
12
13
14
26
15
16
Pin Name
Standard DC Voltage (V)
PB
See relevant
documents.
REC
0
PB
1.7
REC
0
PB
0
REC
3.7
PB
0
REC
3.7
Equivalent Circuit
Notes
ENVDET-OUT
PB-OUT
GND
REC-Y-IN
REC-C-IN
REC
3.0 V
17
REC/MUTE/PB
REC
MUTE
1.0 V
PB
Continued on next page.
No. 5711-7/13
LA70020, 70020M
Continued from preceding page.
Pin Number
18
19
20
21
Pin Name
Standard DC Voltage (V)
PB
2.5 V
REC
2.5 V
PB
5.0
REC
4.5
PB
0
REC
1.6
PB
2.1
REC
4.1
PB
2.1
REC
4.1
Equivalent Circuit
Notes
REC-CURRENTADJ2
VCC
REC-CURRENTADJ1
REC-AGC-FILT
22
SP L-IN
25
SP H-IN
27
EP L-IN
30
EP H-IN
23
REC SP OUT
28
EP OUT
Continued on next page.
No. 5711-8/13
LA70020, 70020M
Continued from preceding page.
Pin Number
Pin Name
Standard DC Voltage (V)
PB
0
REC
2.5
PB
2.1
REC
4.1
PB
2.1
REC
4.1
Equivalent Circuit
Notes
24
29
PB FILT
34
32
35
33
HiFi
PB-Lch-IN
PB-Hch-IN
HiFi
REC-OUT
HiFi
36
VCC
5.0
Usage Notes
Control Pin Logic
HiFi RF-SW, REC-MUTE : Pin 6
During playback
Pin 6 level - DC < 1.0 V: Lch
Pin 6 level - DC > 1.0 V: Hch
During recording
Pin 6 level - DC < 3.0 V: Mute off
Pin 6 level - DC > 3.0 V: Mute on
No. 5711-9/13
LA70020, 70020M
Switching Video Trick Mode with Pin 7
GND < pin 7 level - DC < 1.0 V: TRICK2
1.0 V < pin 7 level - DC < 3.0 V: NORMAL
3.0 V < pin 7 level - DC < 5.0 V: TRICK2
NORMAL Mode
Two channels selected with pin 9 (EP/SP): ON
Envelope comparator: OFF
TRICK Modes
All four channels: ON
Envelope comparator: OFF
Difference between TRICK1 and TRICK2 modes
TRICK1 is a special playback mode using the following path
Envelope comparator OUT (pin 8) → Servo (microcontroller) → Pin 3 (HA) → HA-SW
TRICK2 provides SP searching
Envelope comparator OUT → HA-SW
HA-SW (EP/SP mode switch): Pin 9
GND < pin 9 level - DC < 1.5 V: SP mode
1.5 V < pin 9 level - DC < 5 V: EP mode
Video Synchronization of HA Switching Timing during Playback with H-SYNC Signal
During playback, the LA70020’s video circuits synchronize the HA-SW switching timing shown in the following figure
with the H-SYNC signal from pin 11. (Other EP/SP switching takes place in real time.)
The hi-fi playback amplifier’s gain is approximately 2.4 dB higher in EP mode than in SP mode.
SP: 75.0 dB
EP: 77.4 dB
No. 5711-10/13
LA70020, 70020M
Comparator Output: Pin 8
EP envelope > SP envelope: High (min. 4.0 V)
EP envelope < SP envelope: Low (max. 0.7 V)
H-SYNC Input: Pin 11
Pin 11 level - DC > 1.5 V: H-SYNC interval
Video circuit operation only
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 17
Envelope Detector Characteristic: Pin 12
The LA70020 includes a built-in playback signal envelope detector circuit for use in automating tracking adjustment.
Envelope detector voltage characteristic
Pin 12 level - detector
DC level (V)
EP, with 18-k<OMEGA_UC> resistor on pin 12
SP, with 18-k<OMEGA_UC> resistor on pin 12
Pin 12 level - playback output level (mVp-p)
No. 5711-11/13
LA70020, 70020M
Video REC AMP Gain Control
The LA70020 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 18 to 1/2 VCC (that is, approximately 2.5 V), and RO1 determines the
recording current.
Design values
RO1 = 1.5 kΩ = 16.0 mA (SP) (per channel)
RO1 = 1.5 kΩ = 12.7 mA (EP)
[01] REC-CURRENT (mAp-p)
design values
REC-CURRENT-ADJ2 Used
Applying a DC control voltage between 1 and 4 V to pin 18 adjusts the figure determined by RO1 between –6.0 dB and
+3.5 dB.
Note: One possible circuit for applying this voltage is the following, which provides 9 modes between 1 and 4 V.
Hi-Fi REC AMP Gain Control
The LA70020 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-ADJ
RO1 determines the recording current.
Design values
RO1 = 1.0 kΩ = 24.0 mA (SP) (per channel)
RO1 = 1.5 kΩ = 16.0 mA (EP)
No. 5711-12/13
LA70020, 70020M
Block Diagram
■ 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:
➀ 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:
➁ 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, 1998. Specifications and information herein are subject to
change without notice.
PS No. 5711-13/13