For price, delivery, and to place orders, please contact Hittite Microwave Corporation:

20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373

Order On-line at www.hittite.com

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General Description

The HMC836LP6CE is a fully functioned Fractional-N Phase-Locked-Loop (PLL) Frequency Synthesizer with an

Integrated Voltage Controlled Oscillator (VCO). The synthesizer consists of an integrated low noise VCO with x2

output, an autocalibration subsystem for low voltage VCO tuning, a very low noise digital Phase Detector (PD), a

precision controlled charge pump, a low noise reference path divider and a fractional divider.

The fractional synthesizer features an advanced delta-sigma modulator design that allows both ultra-fine step sizes

and low spurious products. The phase detector (PD) features cycle slip prevention (CSP) technology to allow faster

frequency hopping times. Ultra low in-close phase noise and low spurious also allows wider loop bandwidths for faster

frequency hopping and low micro-phonics.

For theory of operation and register map refer to the “PLLs w/ Integrated VCOs - RF VCOs” Operating Guide. To view

the Operating Guide, please visit www.hittite.com and choose HMC836LP6CE from the “Search by Part Number”

pull down menu.

HMC836LP6CE

v02.1109

FRACTIONAL-N SYNTHESIZER WITH

INTEGRATED VCO, 3365 - 3705 MHz

Parameter

Condition

Min.

Typ.

Max.

Units

RF Output Characteristics

VCO Frequency at PLL Input

1682.5

1852.5

MHz

3365

3705

MHz

-1

6

9

dBm

VCO Tuning Sensitivity

Measured at 2 GHz, 2V

15

MHz/V

VCO Supply Pushing

Measured at 2 GHz, 2V

-2

1.5

MHz/V

RF Output 2nd Harmonic

-25

dBc

RF Output 3rd Harmonic

-23

dBc

RF Output 4th Harmonic

-31

dBc

RF Divider Characteristics

19-Bit N-Divider Range (Integer)

16

524,287

19-Bit N-Divider Range (Fractional)

Fractional nominal divide ratio

varies (-3 / +4) dynamically max

20

524,283

REF Input Characteristics

Max Rep Input Frequency

200

MHz

Max Ref Frequency with AutoCal

TBD

MHz

Min Ref Input Frequency

100

kHz

Ref Input Range

AC Coupled

1.5

2

3.3

Vpp

Ref Input Capacitance

5pF

14-Bit R-Divider Range

1

16,383

Phase Detector (PD)

PD Frequency Fractional Mode

Max PD Freq. Min VCO Freq/20

0.1

TBD

MHz

PD Frequency Integer Mode

Max PD Freq. Min VCO Freq/16

0.1

110

MHz

Charge Pump

Max Output Current

2.54

mA

Min Output Current

20

μA

Charge Pump Gain Step Size (5-Bits)

20

μA

Charge Pump Trim Step Size (3-Bits)

5

μA

VPPCP, VDDCP, VCC1, VCC2 = 5V ±4%; RVDD, AVDD, DVDD3V, VCCPD, VCCHF, VCCPS =

3.3V ±6% GNDCP = GNDLS = Ground Paddle = 0V