NTE7138
Integrated Circuit
Advanced Monitor Video Controller for OSD
Description:
The NTE7138 is an RGB pre鈥揳mplifier in a 20鈥揕ead DIP type package designed for color monitor
systems with super VGA performance. It is intended for DC or AC coupling of the color signals to the
cathodes of a CRT.
Features:
D
85MHz Video Controller
D
Fully DC Controllable
D
3 Separate Video Channels
D
Input Black Level Clamping
D
White Level Adjustment for 2 Channels Only
D
Brightness Control with Correct Grey Scale Tracking
D
Contrast Control for All 3 Channels Simultaneously
D
Cathode Feedback to Internal Reference for Cut鈥揙ff Control, Which Allows Unstabilized Video
Supply Voltage
D
Current Outputs for RGB Signal Currents
D
RGB Voltage Outputs to External Peaking Circuits
D
Blanking and Switch鈥揙ff Input for Screen Protection
D
Sync On Green Operation Possible
D
On Screen Display (OSD) Facility
Absolute Maximum Ratings:
Supply Voltage (Pin7), V
P
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to +8.8V
Input Voltage Range (Pin2, Pin5, Pin8), V
i
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?.1 to V
P
External DC Voltage Ranges, V
ext
Pin20, Pin17, Pin14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?.1 to V
P
Pin12, Pin15, Pin18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?.1 to +0.7V
Pin1, Pin3, Pin6, Pin11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?.1 to V
P
Pin9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?.1 to V
P
+0.7V
Pin10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?.1 to V
P
+0.7V
Average Output Current (Pin14, Pin17, Pin20, Note 1), I
o(av)
. . . . . . . . . . . . . . . . . . . . . . . 0 to 50mA
Peak Output Current (Pin14, Pin17, Pin20), I
OM
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 100mA
Total Power Dissipation, P
tot
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1200mW
Electrostatic Handling for All Pins (Note 2), V
esd
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
鹵500V
Operating Junction Temperature Range, T
J
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?5擄 to +150擄C
Operating Ambient Temperatrure Range, T
A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0擄 to +70擄C
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?5擄 to +150擄C
Thermal Resistance, Junction鈥搕o鈥揂mbient (In Free Air), R
thJA
. . . . . . . . . . . . . . . . . . . . . . . . 65K/W
Note 1. Signal amplitude of 50mA black鈥搕o鈥搘hite is possible if the average current (including blank-
ing times and signal variation against time) does not exceed 50mA. The maximum power
dissipation of 1200mW has to be considered.
Note 2. Equivalent to discharging a 200pF capacitor through a 0鈩?series resistor.
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