Page 1
Ordering number: EN 2289C
Monolithic Linear IC
LA7625
Video, Chroma and Deflection Circuit for Color
Television Sets
Overview
The LA7625 is based on the LA7620 with the video circuit
DC restoration factor changed to 100%. The LA7625 is small,
multifunction ICs in which video, chroma and deflection
circuits for NTSC color TV system are packaged in a
shrink-type DIP30S (the same type as the earlier DIP22). In
addition to being small, these ICs greatly reduce the number of
components required and reduce the number of adjustments
that must be made.
By combining the LA7625 with the LA7555 or LA7577
VIF/SIF IC, or LA7832, LA7833, LA7837, or LA7838 vertical
output IC, it is possible to process all functions of the color
television signal system. Note that the LA7625 has a peak
clipping circuit built into the video circuit, and is suited
primarily for compact sets.
Features
.
Small package
.
Few peripheral components needed.
.
Few adjustments needed.
(The functions listed below require no adjustments.)
.
Chroma VCO (APC)
.
Horizontal oscillation H-Hold
.
Vertical oscillation V-Hold
.
Multifunctional.
Package Dimensions
unit : mm
3061-DIP30S
30
1
1.15 1.78
[LA7625]
27.2
0.48 0.95
16
8.6
10.16
15
4.25
4.95max
3.2
0.51min
SANYO : DIP30S
0.25
Specifications
Maximum Ratings atTa=25°C
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
Maximum supply current I
Allowable power dissipation Pd max Ta % 65°C 1100 mW
Operating temperature Topr –20 to +85 °C
Storage temperature Tstg –55 to +125 °C
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
max 14.0 V
16
max 15.0 mA
22
D3095HA (II)/62095HA (II)/9278YT/O306AT, TS No.2289-1/5
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LA7625
Operating Conditions atTa=25°C
Parameter Symbol Conditions Ratings Unit
Recommended supply voltage V
Recommended supply current I
Operating supply voltage range V
Operating supply current range I
Electrical Characteristics at Ta = 25 °C, VCC=V16=12V,ICC=I22=10mA
16
22
op 9.0 to 14.0 V
16
op 8.5 to 15.0 mA
22
12.0 V
10.0 mA
Parameter Symbol
Circuit current I
16
No signal 40 53 75 mA
Conditions
min typ max Unit
[Deflection block]
Horizontal supply voltage V
Sync separation input DC level V
Vertical free-running
frequency
Z22
S.S
f
1f
V
f
2f
V
Vertical blanking pulse width PW V.blk 19.25/f
Vertical output pulse width PW V.out 10.25/f
Vertical drive stage voltage gain G
Vertical output pulse start
voltage
Vertical pull-in operation start
voltage
Vertical blanking pulse wave
peak value
Horizontal free-running
frequency
V
Vcds 4.0 V
Vvps 4.0 V
VV.blk 10 V
f
H
Frequency deviation versus 15.734 kHz –70 0 130 Hz
8.2 8.7 9.2 V
9.0 9.3 9.6 V
/296.5 Hz
H
/224.5 Hz
H
H
H
s
s
13 16.2 19 dB
Dependence of horizontal
oscillation frequency on
supply voltage
∆ f
(V) fH(8V)–fH(7V) –10 0 10 Hz
H
Dependence of horizontal
oscillation frequency on ambient
temperature
∆ f
/∆ TTa= –10 °C to 60 °C –1.5 1.5 Hz/deg
H
Horizontal output pulse width PW Hout 23.5 24.5 25.5 µs
Horizontal sync pull-in
frequency range
Horizontal output pulse start
voltage
Horizontal free-running
frequency drift with time
Hotizontal blanking
threshold level
Horizontal output drive current I
Horizontal oscillation control
sensitivity
Hold-down operation start
voltage
f
pull Differential versus 15.734 kHz
H
V
pos 5.5 V
H
∆ f
V
.blk 11 V
H
H.O
B
fH
V
HD
for 5 seconds to 30 minutes after power is applied –50 –10 30 Hz
HT
Reference value 236 Hz/µA
400 Hz
–500 Hz
2.0 4.5 mA
0.55 0.65 0.75 V
[Video block]
Video tone
control characteristics 1
Video tone
control characteristics 2
RE1
RE2
Video voltage gain AV
f = 2 MHz,
Video tone VR: 0 V
f = 2 MHz,
Video tone VR: 12 V
f = 100 kHz,
Video tone VR: 5.5 V
–5 –3 –1 dB
12 15 18 dB
12 15 18 dB
Contrast control center eo f = 100 kHz, input: 100 mVp-p 0.2 0.3 0.4 Vp-p
Contrast variable range ∆ eo f = 100 kHz 16 18 20 dB
BR1 No signal, bright VR: 3 V 8 V
Bright control characteristics
BR2 No signal, bright VR: 6 V 5.8 6.3 6.8 V
BR3 No signal, bright VR: 9 V 4.5 V
Frequency characteristics f f = 5 MHz/f = 100 kHz –5 dB
DC restoration factor R
DC
STAIR STEP signal reference value 100 %
Continued on next page.
No.2289-2/5
Page 3
Continued from preceding page.
LA7625
Parameter Symbol
[Chroma Block]
ACC amplitude characteristics
ACC phase characteristics
Killer operating point EK –55 –46 –40 dB
Color control center B-Ycen Output B-Y: color VR 6 V 2.9 4.3 5.5 Vp-p
Maximum demodulation output B-Y max Output B-Y: color VR 12 V 5.5 6.5 Vp-p
Color contrast variable range ∆ G cont Output B-Y 15.5 17.0 18.5 dB
Tint center T cen Output B-Y: tint VR 6 V –17 –5 +7 deg
Tint variable range ∆ T Output B-Y
APC pull-in range ∆ f APC ±300 Hz
Demodulation output ratio 1 R-Y/B-Y 0.81 0.90 0.98
Demodulation output ratio 2 G-Y/B-Y 0.24 0.30 0.38
Demodulation angle
Color difference output DC
voltage
Color difference output DC
deviation voltage
ACC1 Input: +6 dB –3 0 +3 dB
ACC2 Input : –20 dB –7 +2 dB
ACC
1 Input: +6 dB –3 +3 deg
ø
ACC
2 Input: –20 dB –7 +7 deg
ø
∠R-Y/B-Y Tint VR 6 V 96 104 112 deg
∠G-Y/B-Y Tint VR 6 V –132 –122 –112 deg
V9,10,11 6.7 7.2 7.7 V
∆ V9,10,11 –200 +200 mV
Conditions
min typ max Unit
+45
–35
deg
No.2289-3/5
Page 4
LA7625
Block Diagram of Equivalent Circuit Block and Examples of Peripheral Circuits
2nd
Countdown
1st
Countdown
X-ray
Protector
Hor.
Predriver
Unit (resistance: Ω, capacitance: F)
No.2289-4/5
Page 5
Vertical output IC (LA7832, 7833) connection circuit example
Includes vertical stabilization circuit
Vertical output IC (LA7837, 7838) connection circuit example
LA7625
Unit (resistance: Ω, capacitance: F)
↑
Vertical stabilization circuit
Unit (resistance: Ω)
Specifications of any and all SANYO products described or contained herein stipulate the performance,
characteristics, and functions of the described products in the independent state, and are not guarantees
of the performance, characteristics, and functions of the described products as mounted in the customer’s
products or equipment. To verify symptoms and states that cannot be evaluated in an independent device,
the customer should always evaluate and test devices mounted in the customer’s products or equipment.
SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all
semiconductor products fail with some probability. It is possible that these probabilistic failures could
give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,
or that could cause damage to other property. When designing equipment, adopt safety measures so
that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective
circuits and error prevention circuits for safe design, redundant design, and structural design.
In the event that any or all SANYO products(including technical data,services) described or
contained herein are controlled under any of applicable local export control laws and regulations,
such products must not be exported without obtaining the export license from the authorities
concerned in accordance with the above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system,
or otherwise, without the prior written permission of SANYO Electric Co. , Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the “Delivery Specification”
for the SANYO product that you intend to use.
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 December, 1995. Specifications and information herein are subject to
change without notice.
PS No.2289-5/5
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