8

8 - 239

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HMC684LP4 / 684LP4E

v01.0408

BiCMOS MMIC MIXER W/ INTEGRATED

LO AMPLIFIER, 700 - 1000 MHz

Pin Number

Function

Description

Interface Schematic

1, 6, 7, 11 - 14,

18, 20, 23

N/C

No connection. These pins may be connected to RF

ground. Performance will not be affected.

2, 5, 15, 17

GND

Package bottom must be

connected to RF/DC ground.

3RF

This pin is matched single-ended 50 ohm and DC

shorted to ground through a balun.

4TAP

Center tap of secondary side of the internal RF balun.

Short to ground with a zero ohm close to the package.

8, 10, 24

Vcc1, Vcc2,

Vcc3

Power supply voltage. See application circuit

for required external components.

9LO_BIAS

Adjust the LO buffer current through an external

resistor. See application circuit for required external

components.

16

LO

This pin is matched single-ended 50 ohm and DC

shorted to ground through a balun.

19

G_BIAS

External optional bias. See application circuit

for required external components.

21, 22

IFN, IFP

Differential IF input / output pins matched to differential

50 ohms. For applications not requiring operation to DC

an off chip DC blocking capacitor should be used.

Pin Descriptions