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Ordering number: EN 4957A
Monolithic Linear IC
LA7890 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.
Package Dimensions
unit : mm
3043A-SIP10
[LA7890]
Function
. Operational amplifier
Features
. DC control . Temperature drift stability . 100 V maximum supply voltage
Specifications
Maximum Ratings at Ta = 25C
Parameter Maximum supply voltage Allowable power dissipation Operating temperature Storage temperature Symbol VCC max Pd max Topr Tstg Ta % 75C Conditions Ratings 100 400 -10 to +75 -55 to +150
SANYO : SIP10
Unit V mW C C
Recommended Operating Conditions at Ta = 25C
Parameter Recommended supply voltage Operating supply voltage Symbol VCC VCC op Conditions Ratings 80 60 to 90 Unit V V
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
LA7890
Operating Characteristics at Ta = 25C, VCC = 80 V
Parameter Current drain Minimum reference voltage Maximum reference voltage Minimum output voltage Symbol ICC VREF min VREF max VOUT min (R) VOUT min (G) VOUT min (B) VOUT max (R) VOUT max (G) VOUT max (B) VOUT high (R) VOUT high (G) VOUT high (B) VOUT mid (R) VOUT mid (G) VOUT mid (B) VOUT low (R) VOUT low (G) VOUT low (B) Conditions When 6 V DC is applied to TP1, TP3 and TP5, and 9 V is applied to TP7 Reference value Reference value When 12 V DC is applied to TP1, TP3 and TP5, and 9 V is applied to TP7 When 0 V DC is applied to TP1, TP3 and TP5, and 9 V is applied to TP7 When 3 V DC is applied to TP1, TP3 and TP5, and 9 V is applied to TP7 When 6 V DC is applied to TP1, TP3 and TP5, and 9 V is applied to TP7 When 9 V DC is applied to TP1, TP3 and TP5, and 9 V is applied to TP7 77 77 77 67 67 67 37 37 37 7 7 7 min 1.9 0 75 0.3 0.3 0.3 typ 2.2 max 2.7 Unit mA V V V V V V V V V V V V V V V V V
Maximum output voltage
High-level output voltage
Mid-level output voltage
Low-level output voltage
69 69 69 39 39 39 9 9 9
71 71 71 41 41 41 11 11 11
Internal Equivalent Circuit Block Diagram
Test Circuit
No. 4957-2/3
LA7890
Sample Application Circuit
Braun tube (CRT)
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. No. 4957-3/3

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