EL640.200-SK Operations Manual (020-0348-00B)
6
Specifications
Performance characteristics are guaranteed when measured at 25°C with rated
input voltage unless otherwise specified. The minimum and maximum
specifications in this manual should be met, without exception, to ensure the
long-term reliability of the display. Planar does not recommend operation of
the display outside these specifications.
Control Basics
The EL panel is a matrix structure with column and row electrodes arranged in
an X-Y formation. Light is emitted when an AC voltage of sufficient amplitude
is applied at a row-column intersection. The display operation is based on the
symmetric, line-at-a-time data addressing scheme.
Power
The supply voltages are shown in Table 1. All internal high voltages are
generated from the display supply voltage (VH).
Table 1. DC Input Voltage Requirements.
Parameter
1
Symbol
Min
Typ
Max
Absolute Max2
Logic voltage
VL
4.75 V
5.25 V
Logic voltage absolute max.
VLmax
-0.5 V
6 V
Logic supply current at +5 V
I
L
150 mA
Display supply voltage
V
H
8 V
18 V
20 V
VH Supply current at +8 V
I
H
2.1 A
Power consumption 5 V/12 V
7.5 W
17.0 W
1 Operating conditions: ambient temperature 25
q
C, 240 Hz frame rate.
2 Absolute max. ratings are those values beyond which damage to the device may occur.
There is no overcurrent protection on either the V
H
or VL inputs to protect
against catastrophic faults. Planar recommends the use of a series fuse on the
12-volt supply (V
H
). A general guideline is to rate the fuse at 1.8 to 2 times the
display maximum current rating.
Table 2. Video Input Requirements.
Description
Symbol
Min
Max
Units
Absolute Maximum Input voltage
VI
MAX
-0.5
VL + 0.5
V
Low-level Input voltage
V
IL
0
20% VL
V
High-level Input voltage
V
IH
70% VL
VL
Vcc
Low-level input current
I
IL
–
-0.4
mA
High-level input current
I
IH
–
10
µA
All video inputs are CMOS compatible with 470
:
series resistors. Selftest, HS,
VIDMODE, LUM0, and LUM1 have 10 k
:
pull-up resistors.
