For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343

Fax: 978-250-3373

Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@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 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.

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

Number” pull down menu.

HMC836LP6CE

v06.1010

FRACTIONAL-N SYNTHESIZER WITH

INTEGRATED VCO, 3365 - 3705 MHz

Parameter

Condition

Min.

Typ.

Max.

Units

RF Output Characteristics

VCO Frequency

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

Ref Input Frequency

Synthesizer phase noise can

degrade by about 5dB when oper-

ating with a reference frequency

near the low end of this range.

10

50

200

MHz

Ref Input Range

AC Coupled

1.5

2

3.3

Vpp

Ref Input Capacitance

5

pF

14-Bit R-Divider Range

1

16,383

Phase Detector (PD)

PD Frequency Fractional Feedback Mode

[1]

0.1

100

MHz

PD Frequency Fractional Feedforward

Mode (and Register 6 [17:16] = 10)

[1]

0.1

80

MHz

PD Frequency Integer Mode

[1]

0.1

125

MHz

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

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

Note 1: This maximum phase detector frequency can only be achieved if the minimum N value is respected. eg. In the case of fractional feedback

mode, the maximum PFD rate = fvco/20 or 100MHz, whichever is less.