9

9 - 7

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HMC683LP6C / 683LP6CE

v02.0808

HIGH IP3 DUAL CHANNEL

DOWNCONVERTER w/ LO SWITCH, 0.7 - 1.0 GHz

Pin number

Function

Description

interface schematic

1, 10

rF1, rF2

these are the rF inputs of the mixers. see

application circuit for the off-chip matching

components

2, 9

tAP1, tAP2

these are the center taps of the internal rF baluns.

connect these pins to the Ac ground via external

capacitors. see application circuit.

3, 5, 8, 15,

16, 22, 23,

26 - 29, 35, 36

GnD

these pins must be connected to rF ground.

4, 7

BiAs1, BiAs2

Bias pins for mixer cores. see

application circuit for the nominal value.

6, 17, 18,

24, 33, 34

vcc1, vcc_BAL2,

vcc_AmP2,

vcc2, vcc_AmP1,

vcc_BAL1

Power supply voltage pins. see application

circuit for bypass capacitors required.

11, 20, 31, 40

n/c

no connection required. these pins may be

connected to rF GnD without affecting performance.

12, 39

inD1, inD2

current source inductors for iF amplifiers.

13, 14,

38, 37

iF2P, iF2n,

iF1P, iF1n

Differential iF outputs and Dc bias for iF amplifiers.

19, 32

BiAs_ADJ1,

BiAs_ADJ2

Adjusts Lo buffer amplifies current via

external resistor. see application circuit.

21, 30

Lo2, Lo1

these are Lo inputs of the mixers. see application

circuit for off-chip matching components.

25

Lo_seL

control voltage for Lo1 or Lo2 selection. Lo1 is

selected when Lo seL is set low. Lo2 is selected

when Lo seL is set high. see application circuit and

truth table for low and high voltage levels.

Pin Descriptions