Planar ICEBrite EL VGA Displays EL640.480-AM - Manual (Page 8)

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 (VH). The logic supply
voltage (VL) should be present whenever video input signals or VH is applied.
Table 1. DC Input Voltage Requirements.
AM1, AM8 ETL AM8 IN/ET Notes
12 V 24 V
VL +5 V
±5%
+5 V
±5%
+5 V
±5% absolute max 7.0 V
VH +12 V
±10% +12
V
±10% +24
V
±10% absolute max. 15 V
and 30 V
respectively
IL, max 75 mA 75 mA 75 mA @ VL = +5 V
IH, max 2.0 A 2.0 A 1.0 A @ VH = +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 VH or VL 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.