Data Sheet

HMC8414

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

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Rev. 0 | 7 of 34

Figure 2. Pin Configuration

Table 9. Pin Function Descriptions

Pin No.

Mnemonic

Description

1, 12

GND

Ground. Connect to a ground pad that has low electrical and thermal impedance.

2

RFIN

RF Input. The RFIN pin is DC-coupled and matched to 50 Ω. See Figure 4 for the interface schematic.

3, 5 to 10, 13, 16

NIC

No Internal Connection. These pins are not connected internally. For normal operation, connect these

pins to ground.

4

RBIAS

Bias Setting Resistor. Connect a resistor between the RBIAS pin and VDD pins (RFOUT/VDD1 and

VDD2) to set the quiescent drain current. See Figure 130 for more details.

11

RFOUT/VDD1

RF Output and Drain Bias Voltage. The RF output is DC-coupled and serves as the drain biasing node.

Connect a DC bias network to provide the drain current and AC-couple the RF output path.

14

VDD2

Drain Bias Voltage. Connect this pin directly to the supply voltage.

15

VCTRL

Bypass Control. Setting VCTRL to 0 V enables bypass mode. Setting VCTRL to 3 V enables amplifier

mode.

EPAD

Exposed Pad. Connect the exposed pad to a ground plane that has low electrical and thermal

impedance.

INTERFACE SCHEMATICS

Figure 3. RBIAS Interface Schematic

Figure 4. RFIN Interface Schematic

Figure 5. GND Interface Schematic

Figure 6. RFOUT/VDD1 Interface Schematic

Figure 7. VCTRL Interface Schematic