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HMC765LP6CE

v02.0110

FRACTIONAL-N SYNTHESIZER WITH

INTEGRATED VCO, 7.8 - 8.8 GHz

Pin Descriptions

Pin Number

Function

Description

1, 9 - 13, 22, 36

N/C

No Connection. These pins may be connected to RF/DC ground.

Performance will not be affected.

2 - 4, 7, 37, 39

These pins must be connected to RF/DC Ground

5GND

These pins and package bottom

must be connected to RF/DC Ground

+5V Power Supply for VCO

40

VCCVCO1

6VTUNE

Control Voltage Input. Modulation port bandwidth

dependent on drive source impedance.

14

ACG

AC Ground. This pin must be connected to

an external capacitor to ground.

15

AVCC

Analog Power supply pin for the RF Section.

A decoupling capacitor to the ground plane should

be placed as close as possible to this pin. Nominally 3.3V

16

VDDCP

+5V Power Supply for charge pump digital section

17

VCCCP

+5V Power Supply for the charge pump analog section

18

CP

Charge pump output

19

VDDPFD

Analog Power supply for the phase frequency detector, Nominally 3.3V

20

External bypass decoupling for precision bias circuits,

1.920V ±20 mV is generated internally

21

AVDD

Analog Power supply for analog ref paths, Nominally 3.3V

23

REFN

Reference input (Negative or AC coupled to GND)

24

REFP

Reference input (Positive)

25

RVDD

Ref path supply

26

DVDDQ

Digital supply for Substrate, Nominally 3.3V

27

CE

Chip Enable

28

SEN

Serial port latch enable input

29

SCK

Serial port clock input

30

SDI

Serial port data input

31

DVDD

Power supply pin for internal digital circuitry. Nominally 3.3V

32

VDDIO

Power Supply for digital I/O driver

33

LD_SDO

Lock Detect, Main Serial Data Output

or VCO Serial Port Data Out

34

VCCPS

Analog Power Supply for Prescaler, Nominally 3.3V

35

DVDDM

Digital Power Supply for M-Counter, Nominally 3.3V

38

RFOUT

RF output (AC coupled).

[1] This pin is not connected internally, however, this pin must be connected to GND to maintain product family pin for pin compatibility.

[2] This pin is not connected internally, however, this pin must be connected to Vcc to maintain product family pin for pin compatibility.

[3] BIAS ref voltage (pin 20) cannot drive an external load, and must be measured with a 10 GOhm meter such as Agilent 34410A; a typical

10 Mohm DVM will read erroneously.