RGB Cutoff Adjustment IC
Overview
The LA7890 is a DC-controlled, CRT display RGB cutoff
adjustment IC. It can be used for a wide range of applications,
regardless of whether they employ a Trinitron tube or a
dot-matrix tube display.
Function
.
Operational amplifier
Features
.
DC control
.
Temperature drift stability
.
100 V maximum supply voltage
Package Dimensions
unit : mm
3043A-SIP10
[LA7890]
SANYO : SIP10
Specifications
Maximum Ratings
at Ta = 25C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
V
CC
max
100
V
Allowable power dissipation
Pd max
Ta
%
75C
400
mW
Operating temperature
Topr
10 to +75
C
Storage temperature
Tstg
55 to +150
C
Recommended Operating Conditions
at Ta = 25C
Parameter
Symbol
Conditions
Ratings
Unit
Recommended supply voltage
V
CC
80
V
Operating supply voltage
V
CC
op
60 to 90
V
Ordering number: EN 4957A
Monolithic Linear IC
LA7890
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
O3096HA(II)/41495TH(ID) No.4957-1/3
Operating Characteristics
at Ta = 25C, V
CC
= 80 V
Parameter
Symbol
Conditions
min
typ
max
Unit
Current drain
I
CC
When 6 V DC is applied to TP1, TP3 and
TP5, and 9 V is applied to TP7
1.9
2.2
2.7
mA
Minimum reference voltage
V
REF
min
Reference value
0
V
Maximum reference voltage
V
REF
max
Reference value
75
V
Minimum output voltage
V
OUT
min (R)
When 12 V DC is applied to TP1, TP3 and
TP5, and 9 V is applied to TP7
0.3
V
V
OUT
min (G)
0.3
V
V
OUT
min (B)
0.3
V
Maximum output voltage
V
OUT
max (R)
When 0 V DC is applied to TP1, TP3 and
TP5, and 9 V is applied to TP7
77
V
V
OUT
max (G)
77
V
V
OUT
max (B)
77
V
High-level output voltage
V
OUT
high (R)
When 3 V DC is applied to TP1, TP3 and
TP5, and 9 V is applied to TP7
67
69
71
V
V
OUT
high (G)
67
69
71
V
V
OUT
high (B)
67
69
71
V
Mid-level output voltage
V
OUT
mid (R)
When 6 V DC is applied to TP1, TP3 and
TP5, and 9 V is applied to TP7
37
39
41
V
V
OUT
mid (G)
37
39
41
V
V
OUT
mid (B)
37
39
41
V
Low-level output voltage
V
OUT
low (R)
When 9 V DC is applied to TP1, TP3 and
TP5, and 9 V is applied to TP7
7
9
11
V
V
OUT
low (G)
7
9
11
V
V
OUT
low (B)
7
9
11
V
Internal Equivalent Circuit Block Diagram
Test Circuit
LA7890
No. 4957-2/3
Sample Application Circuit
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 October, 1996. Specifications and information herein are subject to change without notice.
Braun tube
(CRT)
LA7890
No. 4957-3/3
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