HMC7950 Data Sheet
Rev. 0 | Page 6 of 16
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Figure 2. Pin Configuration
Table 7. Pin Function Descriptions
1, 2, 8, 9, 10,
11, 12, 16
NIC No Internal Connection. Note that data shown herein was measured with these pins externally connected
to RF/dc ground. See Figure 3 for the interface schematic.
3 V
DD
Power Supply Voltage for the Amplifier. Connect a dc bias to provide drain current (I
DD
). See Figure 4 for the
interface schematic.
4 V
GG
2 Gain Control. This pin is dc-coupled and accomplishes gain control by reducing the internal voltage and
becoming more negative. See Figure 5 for the interface schematic.
5, 7, 13, 15 GND These pins must be connected to RF/dc ground. See Figure 3 for the interface schematic.
6 RFIN Radio Frequency (RF) Input. This pin is ac-coupled, but has a large resistor to GND for ESD protection, and
matched to 50 Ω. See Figure 6 for the interface schematic.
14 RFOUT RF Output. This pin is ac-coupled, but has a large resistor to GND for ESD protection, and matched to 50 Ω. See
Figure 7 for the interface schematic.
EPAD (GND) Exposed Pad (Ground). The exposed pad must be connected to RF/dc ground. See Figure 3 for the interface
schematic.
INTERFACE SCHEMATICS
Figure 3. GND Interface Schematic
Figure 4. V
DD
Interface Schematic
Figure 5. V
GG
2 Interface Schematic
Figure 6. RFIN Interface Schematic
Figure 7. RFOUT Interface Schematic
1
NIC
2
NIC
3
V
DD
4
V
GG
2
5
GND
6
RF
IN
7
G
ND
8
NIC
9
NIC
10
NIC
11
NIC
12
NIC
1
3
GND
14
RFOUT
15
GND
16
NIC
NOTES
1. NIC = NO INTERNAL CONNECTION. NOTE THAT DATA
SHOWN HEREIN WAS MEASURED WITH THESE PINS
EXTERNALLY CONNECTED TO RF/DC GROUND.
2. EXPOSED PAD. THE EXPOSED PAD MUST BE
CONNECTED TO RF/DC GROUND.
15412-002
HMC7950
TOP VIEW
(Not to Scale)
