Systems ICEBrite EL VGA Displays User's Manual

EL640.480-AM Operations Manual (020-0351-00C)
6
Specifications
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. Operating voltages required
are provided by a DC/DC converter.
Unless otherwise specified, performance characteristics are guaranteed when
measured at 25°C.
Power
The supply voltages required for the displays are shown in Table 1. All internal
high voltages are generated from display supply voltage (V
H
). The logic supply
voltage (V
L
) should be present whenever video input signals or V
H
is applied.
Table 1. DC Input Voltage Requirements.
AM1, AM8 ETL AM8 IN/ET Notes
12 V 24 V
V
L
+5 V ±5% +5 V ±5% +5 V ±5%
absolute max 7.0 V
V
H
+12 V ±10% +12 V ±10% +24 V ±10%
absolute max. 15 V
and 30 V
respectively
I
L
, max 75 mA 75 mA 75 mA @ V
L
= +5 V
I
H
, max 2.0 A 2.0 A 1.0 A @ V
H
= +12 V
Ptyp, 120 Hz 11 W 11 W 11 W 3840 'E' characters
Pmax, 120 Hz 24 W 24 W 24 W 50/50 2x2
checkerboard
CAUTION: Absolute maximum ratings are those values beyond which
damage to the device may occur.
Table 2. Video Input Requirements.
Description Min Max Notes
Video logic high voltage 3.7 V 5.0 V All input thresholds are
CMOS
Video logic low voltage 0 V 0.9 V
Video lines have 100 Ω
series resistors
Video logic input current – 10 µA +10 µA
There is no overcurrent protection on either the V
H
or V
L
inputs to protect
against catastrophic faults. Planar recommends the use of a series fuse on the
12 volt supply. A general guideline is to rate the fuse at 1.8 to 2 times the
display maximum current rating.