LA7054
Ordering number : EN2558A
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)/92895TH/6257TA, TS No.2558-1/3
Package Dimensions
unit: mm
3017C-SIP9
[LA7054]
SANYO: SIP9
Specifications
Maximum Ratings
at Ta=25C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
V
CC
max
9
V
Allowable power dissipation
Pd max
Ta
60C
250
mW
Operating temperature
Topr
20 to +80
C
Storage temperature
Tstg
40 to +125
C
Operating Conditions
at Ta=25C
Parameter
Symbol
Conditions
Ratings
Unit
Recommended supply voltage
V
CC
5
V
Operating voltage range
V
CC
op
4.25 to 7.00
V
Overview
The LA7054 is a video, audio signal processor IC for UHF
band RF modulators. It performs the functions of TSG (test
signal generator), video clamp circuit, white clip circuit,
audio FM modulator. It is highly stable to supply voltage
variations because the LA7054 has an internal voltage
regulator.
Functions
Audio FM modulator
Sync pulse peak clamp
TSG
White clip
Voltage regulator
Features
Low-voltage operation : V
CC
=5V
Highly stable to supply voltage variations because the
LA7054 has an internal voltage regulator.
On-chip TSG (test signal generator).
Good frequency characteristic of white clip.
Wide amplitude of audio carrier and less high-frequency
spurious interference.
Low audio distortion.
Low current drain : 30% (compared with our similar
ICs).
Minimum number of parts required : Peripherals of clock
oscillator for TSG.
Small-sized package : 9-pin SIP
LA7054
No.2558-2/3
Operating Characteristics
at Ta=25C, V
CC
=5V
Parameter
Symbol
SW Mode
Conditions
Ratings
Unit
SW1
SW2
SW3
min
typ
max
Current drain
I
CC
a
a
a
10
14
18
mA
Video clamp voltage
V
CL
a
b
a
1.35
1.60
1.85 Vp-p
White clip level
V
WC
c
a
V
WC
=V1V
CL
1.10
1.14
1.18 Vp-p
V1 : Output voltage
TSG output amplitude
V
TO
b
0.85
1.00
1.15 Vp-p
TSG V/S ratio
V/S
b
6.0/4.0 6.5/3.5 7.2/2.8
Horizontal sync signal period
t
S
b
63.7
64.0
64.3
s
Horizontal sync signal width
H
S
b
3.6
4.0
4.4
s
White signal width
H
V
b
3.6
4.0
4.4
s
Sync-1st white signal rise time
t
V
1
b
22
24
26
s
Sync-2nd white signal rise time
t
V
2
b
38
40
42
s
Audio carrier amplitude
V
AO
b
1.05
1.30
1.55 Vp-p
Audio modulation degree A
ms
Input signal : 1kHz
73
81
89
%
Audio modulation degree B
ms
4.5Vp-p,
81
90
99
%
Audio modulation degree C
ms
50kHz : 100%
90
100
110
%
Audio modulation degree D
ms
99
110
121
%
Audio modulation degree E
ms
109
121
133
%
Audio distortion
THD
Same as above
0.3
1.5
%
Equivalent Circuit Block Diagram
LA7054
No.2558-3/3
Test Circuit
TSG Output Waveform
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 guarant-
eed 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.
Unit (resistance :
, Capacitance : F)
Ceramic resonator Murata
CSB500E54
Toko
BCRK500B
5.5MHz coil
Sumida
2239-334
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