LA70001M [SANYO]
Record/Playback Amplifiers for VHS Format VCRs; 录制/回放放大器VHS格式录像机
| 型号： | LA70001M |
| 厂家： | 
SANYO SEMICON DEVICE |
| 描述： | Record/Playback Amplifiers for VHS Format VCRs |
| 文件： | 总8页 (文件大小：135K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ordering number : EN5709
Monolithic Linear IC
LA70001, 70001M
Record/Playback Amplifiers for VHS Format VCRs
Overview
Package Dimensions
The LA70001 and LA70001M ICs provide record and
playback amplifiers for VHS format VCRs. A system with
an adjustment-free Y/C record current can be achieved by
combining the LA70001/M with an LA71000M or
LA71500M video signal processing IC.
unit: mm
3067-DIP24S
[LA70001]
Features
• Direct connection of the head to the playback amplifier
input allows the number of external devices to be
reduced.
• A fixed-current drive technique that is strongly resistant
to load fluctuations is adopted in the record amplifier for
stable recording characteristics. The record amplifier
includes a built-in AGC circuit.
SANYO: DIP24S
• These products have the same package dimensions as
the LA70011 and LA70011M to allow a common PCB
to be used. These products can also share the same PCB
with the LA70020 by mounting the IC at the right end of
the LA70020 socket.
unit: mm
3112-MFP24S
[LA70001M]
Specifications
Maximum Ratings at Ta = 25°C
SANYO: MFP24S
Parameter
Maximum supply voltage
Symbol
Conditions
Ratings
Unit
V
VCC max
7.0
Ta ≤ 65°C [LA70001]
Ta ≤ 65°C [LA70001M]
600
mW
Allowable power dissipation
Pd max
500
mW
(Using a 114.3 × 76.1 × 1.6 mm glass epoxy PCB)
Operating temperature
Storage temperature
Topr
Tstg
–10 to +65
°C
°C
–40 to +150
Operating Conditions at Ta = 25°C
Parameter
Recommended supply voltage
Operating supply voltage range
Symbol
VCC
Conditions
Ratings
5.0
Unit
V
VCC op
4.8 to 5.5
V
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-0005 JAPAN
13098RM (OT) No. 5709-1/8
LA70001, 70001M
Electrical Characteristics at Ta = 25°C
Ratings
typ
Parameter
Symbol
Conditions
Unit
min
max
[Playback Mode]
Current drain
ICCP
GVP
The pin 13 inflow current.
VIN = 38 m Vp-p, f = 1 MHz
23
29
59
59
0
35
mA
dB
dB
dB
CH1
CH2
1
56
56
–1
62
62
+1
Voltage gain
G
VP2
Voltage gain difference 1
Equivalent input noise voltage
Frequency characteristics
∆GVP1
GVP1—GVP2
With the same conditions as for the voltage
gain, the ratio of the output passed through a
1.1-MHz low-pass filter and the output with no
input signal.
CH1
CH2
VNIN
VNIN
1
2
1.0
1.5
µVrms
CH1
CH2
∆Vfp1
∆Vfp2
The ratio of the output for VIN = 38 mVp-p,
f = 7 MHz and GVP1, 2, 3, and 4.
–2.5
0
dB
dB
With VIN = 38 mVp-p, f = 4 MHz, the ratio of
the 8-MHz output component (second
harmonic) and the 4-MHz component (the
fundamental).
CH1
CH2
VHDP
1
Second harmonic distortion
Maximum output level
VHDP
2
–40
–35
–35
At f = 1 MHz, the output level when the ratio
of the 3-MHz output (third harmonic) and the
1-MHz output (fundamental) is –30 dB.
CH1
CH2
VOMP
VOMP
1
2
1.0
1.2
Vp-p
dB
The ratio of the VIN = 38 mVp-p, f = 4 MHz
output and GVP1.
Crosstalk SP
VCR1
–40
Output DC offset
∆VODC1 CH1 – CH2
–100
0
0
+100
1.3
mV
V
Envelope detector output pin voltage
VENV
The T6 DC level when there is no input signal.
0.8
With a f = 4 MHz input, the T6 DC level when
the T7A output level becomes 175 mVp-p.
VENVSP
1
2
1
2
2.0
3.5
2.0
4.0
2.5
4.0
2.5
4.5
4
3.0
4.5
3.0
5.0
6
V
V
V
V
Ω
Envelope detector output pin voltage SP1
With a f = 4 MHz input, the T6 DC level when
the T7A output level becomes 400 mVp-p.
VENVSP
VENVEP
VENVEP
With a f = 4 MHz input, the T6 DC level when
the T7A output level becomes 125 mVp-p.
Envelope detector output pin voltage EP
With a f = 4 MHz input, the T6 DC level when
the T7A output level becomes 300 mVp-p.
Switch transistor on resistance in playback
mode
Measure the difference in the DC levels with
a 1-mA and a 2-mA inflow current.
RPON18
SW30-1 Lch → Hch *1
SW30-2 Hch → Lch
1.2
0.0
5.0
0.8
V
V
SW30 threshold level
[Record Mode]
Current drain
ICCR
The pin 13 inflow current.
43
50
57
mA
Record AGC amplifier output level
VRSP
The output level when VIN = 400 mVp-p, f = 4 MHz.
105
112
119
mVp-p
At f = 4 MHz, when VIN = 700 mVp-p: the
output level /VRSP, EP
∆V
1-SP
0.5
1.0
dB
dB
AGC
Record AGC amplifier control
characteristics
At f = 4 MHz, when VIN = 100 mVp-p: the
output level /VRSP, EP
∆V
2-SP
–1.0
–1
–0.5
AGC
At VIN = 400 mVp-p, the ratio of the outputs
when f is 1 MHz and 7 MHz, i.e. the ratio of
the 7-MHz value to the 1-MHz value.*2.
Record AGC amplifier frequency
characteristics
∆VFRS
0
+1
dB
dB
With VIN = 400 mVp-p, f = 4 MHz, the ratio
of the 8-MHz output component (second
harmonic) and the 4-MHz component (the
fundamental).
Record AGC amplifier second harmonic
distortion
∆VHDRS
–45
–40
At f = 4 MHz, the output level at which the
second harmonic goes to –35 dB. *3
Record AGC amplifier maximum output level
Record AGC amplifier muting attenuation
∆VMOSP
∆VMRS
20
22
mAp-p
dB
When VIN = 400 mVp-p and f = 4 MHz, the
output level/VRSP, EP
–45
–40
–40
T9A: VIN = 400 mVp-p, f = 4 MHz
T10A: VIN = 2.4 Vp-p, f = 629 kHz
The ratio of the (4 MHz ± 629 kHz) and the 4-MHz outputs.
Record AGC amplifier cross modulation
relative level
∆VCYS
–45
dB
MUTE-1 MUTE OFF → MUTE ON *1
MUTE-2 MUTE ON → MUTE OFF
PB-REC PB → REC *1
1.2
3.2
1.2
0.0
2.8
5.0
5.0
0.8
V
V
V
V
Record muting threshold level
Record mode to playback mode threshold level
REC-PB REC → PB
Notes:Use a resistor with an accuracy of 1.0% for the resistor between pins 13 and 14.
*1. This is the voltage application point
*2. Here, fix the AGC amplifier gain by applying a 1.8-V DC level to the AGC detector filter pin (pin 15).
*3. Here, adjust the output level by applying a DC voltage to the REC-CUR-Adj pin (pin 12).
No. 5709-2/8
LA70001, 70001M
Pin Functions
Pin No.
1
Pin name
Standard DC voltage (V)
Equivalent circuit
Notes
N.C
N.C
2
EP
SP
3
HA (EP/SP)
1.5 V
1.0 V
1.5 V
Hch
Lch
4
5
6
7
SW30
SYNC
H
H-SYNC
L
Provided in a
separate
document.
PB
REC
PB
ENVDET-OUT
0
1.7
2.1
PB-OUT
REC
8
20
GND
Continued on next page.
No. 5709-3/8
LA70001, 70001M
Continued from preceding page.
Pin No.
Pin name
Standard DC voltage (V)
Equivalent circuit
Notes
PB
REC
PB
4.0
3.7
4.0
3.7
9
REC-Y-IN
10
REC-C-IN
REC
REC
3.0 V
1.0 V
REC
MUTE
11
REC/MUTE/PB
PB
PB
2.5 V
2.5 V
12
13
14
REC-CURRENT-ADJ2
REC
VCC
PB
5.0
4.5
REC-CURRENT-ADJ1
REC
Continued on next page.
No. 5709-4/8
LA70001, 70001M
Continued from preceding page.
Pin No.
Pin name
Standard DC voltage (V)
Equivalent circuit
Notes
PB
REC
PB
0
1.6
2.1
4.1
2.1 V
4.1 V
0
15
REC-AGC-FILT
16
19
L IN
H IN
REC
PB
17
REC_SP_OUT
REC
PB
18
PB FILT
REC
2.5
21
22
23
24
N.C
No. 5709-5/8
LA70001, 70001M
Usage Notes
Control Pin Logic
• HA-SW (EP/SP mode switching): pin 3
GND < the pin 3 DC level < 1.5 V: SP mode
1.5 V < the pin 3 DC level < 5 V: EP mode
• H.SYNC input: pin 5
The pin 5 DC level > 1.5 V: The horizontal synchronization period
In record mode: Used as the REC-AGC-AMP synchronization block gate pulse.
• REC/REC-MUTE/PB switching: pin 11
GND < the pin 11 DC level < 1.0 V: Playback mode
1.0 V < the pin 11 DC level < 3.0 V: Record mode with recording
muted.
3.0 V < the pin 11 DC level < 5.0 V: Record mode
Envelope detection characteristics: pin 6
The LA70001 provides a built-in playback signal envelope detection circuit so that the tracking adjustment can be made
automatic.
Envelope Detection Voltage Characteristics
The pin 6 detected DC level (V)
EP when an 18 kΩ resistor is connected at pin 6.
SP when an 18 kΩ resistor is connected at pin 6.
The pin 7 playback output level (mVp-p)
No. 5709-6/8
LA70001, 70001M
Record Amplifier Gain Control
The LA70001 achieves an adjustment-free record current by adding an AGC circuit in the record amplifier block. The
record current can be modified using the following method.
• Record current adjustment 2: When left open.
Pin 12 DC level is set to 1/2 V (approximately 2.5 V) by an internal bias, and the record current is determined by
CC
Ro1.
Design value: When Ro1 is 1.5 kΩ, the record current will be 12.7 mA per channel.
• Record current adjustment 2: When used.
The gain can be varied by –6.0 dB to +3.5 dB relative to the value set by Ro1 by applying a control DC voltage of
between 1 and 4 V to pin 12.
Record current (mAp-p) design value
Note: The technique shown in the figure below can be used to apply a DC level to pin 12. This allows a control voltage of between 1 and 4 V to be applied.
No. 5709-7/8
LA70001, 70001M
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 January, 1998. Specifications and information herein are subject to
change without notice.
PS No. 5709-8/8
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