LA7625.PDF

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Ordering number: EN 2289C
Monolithic Linear IC
LA7625
Video, Chroma and Deflection Circuit for Color
Television Sets
Overview
Package Dimensions
unit : mm
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.
3061-DIP30S
[LA7625]
Features
. Small package
SANYO : DIP30S
. 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.
Specifications
Maximum Ratings atTa=25°C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
V 16 max
14.0
V
Maximum supply current
I 22 max
15.0
mA
Allowable power dissipation
Pd max
Ta % 65 °C
1100
mW
Operating temperature
Topr
–20 to +85
°C
Storage temperature
Tstg
–55 to +125
°C
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
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 16
12.0
V
Recommended supply current
I 22
10.0
mA
Operating supply voltage range
V 16 op
9.0 to 14.0
V
Operating supply current range
I 22 op
8.5 to 15.0
mA
Electrical Characteristics at Ta = 25°C, V CC =V 16 =12V,I CC =I 22 =10mA
Parameter
Symbol
Conditions
min typ max Unit
Circuit current
I 16 No signal
40 53 75 mA
[Deflection block]
Horizontal supply voltage
V Z22
8.2 8.7 9.2 V
Sync separation input DC level V S.S
9.0 9.3 9.6 V
Vertical free-running
frequency
f V 1
f H /296.5
Hz
f V 2
f H /224.5
Hz
Vertical blanking pulse width PW V.blk
19.25/f H
s
Vertical output pulse width
PW V.out
10.25/f H
s
Vertical drive stage voltage gain G V
13 16.2 19 dB
Vertical output pulse start
voltage
Vcds
4.0 V
Vertical pull-in operation start
voltage
Vvps
4.0 V
Vertical blanking pulse wave
peak value
VV.blk
10
V
Horizontal free-running
frequency
f H Frequency deviation versus 15.734 kHz
–70 0 130 Hz
Dependence of horizontal
oscillation frequency on
supply voltage
D f H (V) f H (8V)–f H (7V)
–10 0 10 Hz
Dependence of horizontal
oscillation frequency on ambient
temperature
D
f H /
D
T a = –10 °C to 60 °C
–1.5
1.5 Hz/deg
Horizontal output pulse width PW Hout
23.5 24.5 25.5 µs
Horizontal sync pull-in
frequency range
f H pull Differential versus 15.734 kHz
400
Hz
–500
Hz
Horizontal output pulse start
voltage
V H pos
5.5 V
Horizontal free-running
frequency drift with time
D
f HT for 5 seconds to 30 minutes after power is applied –50 –10 30 Hz
Hotizontal blanking
threshold level
V H .blk
11
V
Horizontal output drive current
I H.O
2.0
4.5 mA
Horizontal oscillation control
sensitivity
B fH Reference value
236
Hz/µA
Hold-down operation start
voltage
V HD
0.55 0.65 0.75 V
[Video block]
Video tone
control characteristics 1
RE1
f = 2 MHz,
Video tone VR: 0 V
–5 –3 –1 dB
Video tone
control characteristics 2
RE2
f = 2 MHz,
Video tone VR: 12 V
12 15 18 dB
Video voltage gain
AV
f = 100 kHz,
Video tone VR: 5.5 V
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
D
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
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LA7625
Continued from preceding page.
Parameter
Symbol
Conditions
min typ max Unit
[Chroma Block]
ACC amplitude characteristics
ACC1 Input: +6 dB
–3 0 +3 dB
ACC2 Input : –20 dB
–7
+2 dB
ACC phase characteristics
ACC ø 1 Input: +6 dB
–3
+3 deg
ACC ø 2 Input: –20 dB
–7
+7 deg
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
D 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
D
T Output B-Y
+45
–35
deg
APC pull-in range
D 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
Ð
R-Y/B-Y Tint VR 6 V
96 104 112 deg
Ð G-Y/B-Y Tint VR 6 V
–132 –122 –112 deg
Color difference output DC
voltage
V9,10,11
6.7 7.2 7.7 V
Color difference output DC
deviation voltage
D V9,10,11
–200
+200 mV
No.2289 - 3/5
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LA7625
Block Diagram of Equivalent Circuit Block and Examples of Peripheral Circuits
2nd
Countdown
1st
Countdown
X-ray
Protector
Hor.
Predriver
Unit (resistance: W , capacitance: F)
No.2289 - 4/5
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LA7625
Vertical output IC (LA7832, 7833) connection circuit example
Includes vertical stabilization circuit
Unit (resistance: W , capacitance: F)
­
Vertical stabilization circuit
Vertical output IC (LA7837, 7838) connection circuit example
Unit (resistance: W )
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:
1 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:
2 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 December, 1995. Specifications and information herein are subject to change without notice.
No.2289 - 5/5
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