NTE879
Integrated Circuit
RGB to PAL/NTSC Encoder for Color TV
Description:
The NTE879 is an integrated circuit in a 20鈥揕ead DIP type package used to generate a composite
TV signal from baseband red, blue, green, and sync inputs. This device has color subcarrier oscillator,
voltage controlled 90擄 phase shifter, two DSB suppressed carrier chroma modulators, RGB input ma-
trices, and blanking level clamps. It can be operated with very few external parts, but has the pin鈥搊uts
for a fully implemented, top quality composite signal. It is ideal for encoding signals from color camer-
as and graphic generators.
Features:
D
Reference Oscillator Self鈥揅ontained or Externally Driven
D
Nominal 90擄
鹵5擄
Axes are Optionally Trimmable
D
Simple PAL/NTSC Switch
D
Luminance and Chroma Channels can accept Delay Line/Bandpass Elements or Direct Con-
nection
D
Provides DC Reference to Permit Direct Drive to RF Modulator
Absolute Maximum Ratings:
Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
8.2Vdc Regulator Output Current, I
REG
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA
Power Dissipation, P
D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.25W
Derate Above 25擄C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mW/擄C
Junction Temperature, T
J
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150擄C
Operating Temperature Range, T
A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0擄 to +70擄C
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?5擄 to +150擄C
Recommended Operating Conditions:
Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
鹵2V
Sync Tip Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?.5 to +1.0V
Sync, Blanking Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +1.7 to +8.2V
Reg, Green, Blue Inputs (Saturated) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1V
P鈥揚
1
2
3
