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LA7051
Ordering number : EN1455C
Video, Audio Signal Processor
for UHF Band RF Modulator
Monolithic Linear IC
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
73097HA (KT)/D1595TH/D068MO/3214KI/1194KI, TS No.1455-1/3
Package Dimensions
unit: mm
3017C-SIP9
[LA7051]
SANYO: SIP9
Specifications
Maximum Ratings
at Ta=25°C
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
CC
max V8 12 V
Allowable power dissipation Pd max Ta≤60°C 250 mW
Operating temperature Topr –20 to +85 °C
Storage temperature Tstg –55 to +125 °C
Operating Conditions at Ta=25°C
Parameter Symbol Conditions Ratings Unit
Recommended supply voltage V
CC
V8 7.5 V
Operating voltage range V
CC
op 7.0 to 8.0 V
Operating Characteristics at Ta=25°C, V
CC
(V8)=7.5V
Parameter Symbol Conditions
Ratings
min typ max
Unit
V
CC
8 current drain ICC8 9.5 14.5 19.5 mA
Video clamp voltage V
VC
3.6 3.8 4.0 V
Audio FM sensitivity ∆f
fm
6f
m
: 1kHz, 4.5Vp-p input, 900 1250 1600 Hz/mV
f
C
: 5.5MHz
∆f
fm
7f
m
: 1kHz, 4.5Vp-p input, 900 1250 1600 Hz/mV
f
C
: 5.5MHz, R* : 15kΩ
Audio distortion THD6 At deviation width ±50kHz 1.6 2.5 %
THD7 f
m
: 1kHz, fC: 5.5MHz 1.6 2.5 %
Video clamp output amplitude At 1Vp-p stair step signal input –5 +5 %
deviation
Audio output amplitude V
O
6f
C
: 5.5MHz 0.79 1.0 1.26 Vp-p
V
O
7 0.79 1.0 1.26 Vp-p
White clip level V
WC
At 1.5Vp-p stair step signal input 1.100 1.189 Vp-p
*Note : Resistance value of 50kΩ variable resistor in Test Circuit.
Overview
The LA7051 is a video, audio signal processor IC for UHF
band RF modulator. It performs the functions of audio FM
modulator, video clamp circuit, white clip circuit.
Applications
• VCRs.
Features
• 5.5MHz/6.0MHz audio modulation frequency selectable
with control pin.
• Contains white clip circuit.
• Minimum number of external parts required.
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LA7051
No.1455-2/3
LA7051 Test Condition
Parameter Symbol
SW Mode
Test point Remarks
SW1 SW2 SW3 SW4 SW5
V
CC
8 current drain ICC8 OFF c a OFF ON Pin 8
Video clamp voltage V
VC
ON c a OFF OFF Pin 1
Audio FM sensitivity ∆f
fm
6 OFF c a ON ON Pin 3
∆f
fm
7 OFF c a ON OFF Pin 3
Audio distortion THD6 OFF c a ON ON pin 3
THD7 OFF c a ON OFF pin 3
Video clamp output amplitude deviation OFF a a OFF OFF Pin 1
Audio output amplitude V
O
6 OFF c a OFF ON Pin 3
V
O
7 OFF c a OFF OFF pin 3
White clip level V
WC
1 ON b a OFF OFF Pin 1 VWC=VWC1–VWC2
V
WC
2 ON c b OFF OFF Pin 1
Test Circuit
Equivalent Circuit Block Diagram
Unit (resistance : Ω, Capacitance : F)
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LA7051
No.1455-3/3
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 lose.
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 responsibilty 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 July, 1997. Specifications and information herein are subject to
change without notice.
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