Sanyo LA70011 Recording/playback amplifier for vhs vcr Datasheet

Ordering number : EN5710A
Monolithic Linear IC
LA70011, 70011M
Recording/Playback Amplifier for VHS VCRs
Overview
Package Dimensions
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.
unit: mm
3067-DIP24S
[LA70011]
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.
SANYO: DIP24S
unit: mm
3112-MFP24S
[LA70011M]
SANYO: MFP24S
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum power supply voltage
Symbol
Conditions
VCC max
Maximum power dissipation
Pd max
Ta ≤ 65°C [LA70011]
Ta ≤ 65°C [LA70011M] 114.3 × 76.1 × 1.6 mm: glass epoxy
Ratings
Unit
7.0
V
600
mW
500
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 power supply voltage
VCC
Operating power supply voltage range
VCC op
Conditions
5.0
V
4.8 to 5.5
V
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TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
22798RM (OT) No. 5710-1/11
LA70011, 70011M
Operating Characteristics at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
min
typ
Unit
max
Playback Mode
Current drain
Voltage gain
ICCP
44
53
60
mA
SP-L CH1
GVP1
Current flowing into pin 13
56
59
62
dB
SP-H CH2
GVP2
56
59
62
dB
EP-L CH3
GVP3
56
59
62
dB
VIN = 38 mVp-p, f = 1 MHz
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.
EP-H CH4
Voltage gain difference
Intermode gain difference
GVP4
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
T6 DC level with no signal input.
0.0
08
1.3
V
VENVSP1
T6 DC level at which T7A output level is
175 mVp-p for f = 4 MHz.
2.0
2.5
3.0
V
VENVSP2
T6 DC level at which T7A output level is
400 mVp-p for f = 4 MHz.
4.0
4.5
5.0
V
VENVEP1
T6 DC level at which T7A 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
VCOMP1
T2 DC level for VIN = 38 mVp-p and f = 4 MHz.
VCOMP2
T2 DC level for VIN = 38 mVp-p and f = 4 MHz.
RPON17
RPON22
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. 5710-2/11
LA70011, 70011M
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
REC AGC AMP secondary primary distortion
∆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
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 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. 5710-3/11
LA70011, 70011M
Pin Descriptions
Pin Number
Pin Name
Standard DC Voltage (V)
Equivalent Circuit
Notes
Trick1
3.0 V
1
NORMAL
TRICK-H
1.0 V
Trick2
PB
2
H: min. 4.5 V
L: max. 0.7 V
COMP-OUT
EP > SP ENV High
REC
Open
EP
3
HA (EP/SP)
1.0 V
SP
Hch
4
SW30
1.0 V
Lch
SYNC
H
5
H-SYNC
1.5 V
L
Continued on next page.
No. 5710-4/11
LA70011, 70011M
Continued from preceding page.
Pin Number
6
7
8
20
9
10
Pin Name
Standard DC Voltage (V)
PB
See relevant
documents.
REC
0
PB
1.7
REC
2.1
PB
4.0
REC
3.7
PB
4.0
REC
3.7
Equivalent Circuit
Notes
ENVDET-OUT
PB-OUT
GND
REC-Y-IN
REC-C-IN
REC
3.0 V
11
REC/MUTE/PB
REC
MUTE
1.0 V
PB
Continued on next page.
No. 5710-5/11
LA70011, 70011M
Continued from preceding page.
Pin Number
12
13
14
15
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
16
SP L-IN
19
SP H-IN
21
EP L-IN
24
EP H-IN
17
REC SP OUT
22
EP OUT
Continued on next page.
No. 5710-6/11
LA70011, 70011M
Continued from preceding page.
Pin Number
18
23
Pin Name
Standard DC Voltage (V)
PB
0
REC
2.5
Equivalent Circuit
Notes
PB FILT
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
No. 5710-7/11
LA70011, 70011M
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.
Envelope detector voltage characteristic
Pin 6 level - detector
DC level (V)
EP, with 18kΩ resistor on pin 6
SP, with 18kΩ resistor on pin 6
Pin 7 level - playback output level (mVp-p)
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 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)
REC-CURRENT (mAp-p) design values
REC-CURRENT-ADJ2 Used
Applying a DC control voltage between 1 and 4 V to pin 12 adjusts the figure determined by RO1 between –6.0 dB and
+3.5 dB.
No. 5710-9/11
LA70011, 70011M
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
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
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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. 5710-11/11