ATOM Ku GaN 20-40-80W BUC &
SSPA
052910
19
052910_rA - Operator Manual for ATOM Ku
GaN Series 20-40-80W
Section 2.6
J4
–
DC
P
OWER
The 20W, 40W & 80W ATOM Ku GaN power input requires 18V to 56V DC power. Each ATOM is
supplied with a mating connector for the power interface.
The DC unit typically requires 18V to 56V DC power. Refer to specific configuration of the unit for the
exact voltage range. Power is supplied through a four-pin type cylindrical connector. Two pins are used to
deliver the positive connection and two pins are used for the negative connection in order to reduce
resistance. The negative connection is internally connected to case ground. The negative power
connection may alternatively be applied directly to the ground screw terminal on the aluminum housing.
Connector Type
The J4 connector for the DC input is a four-pin miniature circular connector. This connector is a MIL-C-
26482 Series 1 receptacle, shell size 12, 4 pin (Amphenol
®
93-533723-04P). The connector is a
receptacle with pins and requires the mating connector to be a plug with sockets (e.g Amphenol
®
PT06E-
12-4S-476). A range of plug-compatible mating connectors may be used to add options to the plug such
as right-angle, stress relief clamp, metal color/finish, etc. Please contact the connector manufacturer for
more information and/or refer to the Amphenol
®
catalog 12-070.
DC Unit J3 Connector Pinouts
Figure 2-11: DC Unit J4 Connector Pinout
Table 2-4: DC Unit J4 Connector Pinout
Pin
Name
A
V-/Ground
B
V+
C
V+
D
V-/Ground
For the DC input, the positive terminals are pins B/C and the negative terminals are pins A/D. Pins A and
D are connected to case ground internally; pins B and C are connected together internally. It is
recommended to apply the supply voltage evenly to both pairs of pins to evenly share the current among
both sets of wires/pins.
The internal capacitance between the V+ and V- terminals is approximately 120 microfarads.
A
B
D
C