For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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

2

HMC838LP6CE

v05.0612

FRACTIONAL-N PLL WITH INTEGRATED VCO

795 - 945, 1590 - 1890, 3180 - 3780 MHz

General Description

the HMc838lP6ce is a fully functioned Fractional-n Phase-locked-loop (Pll) with an integrated voltage controlled

oscillator (vco). the Pll consists of an integrated low noise vco with a tri-band 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 Pll 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 fas-

ter 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 HMC838LP6CE from the “Search by Part

Number” pull down menu.

Parameter

condition

Min.

typ.

Max.

Units

RF Output Characteristics

vco Frequency at Pll input

1590

1710

1890

MHz

795

855

945

MHz

1590

1710

1890

MHz

3180

3420

3780

MHz

7.5

10

12.5

dBm

4.5

7.5

11

dBm

-9

-4

1

dBm

vco tuning sensitivity

Measured at fo, 2v (n= 0/15/31)

8

11

16

MHz/v

vco supply Pushing

Measured at fo, 2v

1.3

MHz/v

rF output fo/2 Harmonic

doubler Mode

-24

dBc

rF output 3fo/2 Harmonic

doubler Mode

-38

dBc

rF output 2nd Harmonic

fo/2/fo/2fo

-25 / -22 / -28

dBc

rF output 5fo/2 Harmonic

doubler Mode

-50

dBc

rF output 3rd Harmonic

fo/2/fo/2fo

-29 / -32 / -50

dBc

rF output 7fo/2 Harmonic

doubler Mode

-57

dBc

rF output 4th Harmonic

fo/2/fo/2fo

-30 / -42 / -57

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 / +3) dynamically max

20

524,283

REF Input Characteristics

ref input Frequency

synthesizer phase noise can degrade

by about 5dB when operating with a

reference frequency near the low end of

this range.

10

50

200

MHz

ref input range

ac coupled

1

2

3.3

vpp

ref input capacitance

5

pF

14-Bit r-divider range

1

16,383

RVDD, AVDD, DVDD3V, VCCPD, VCCHF, VCCPS = 3.3V ±6% GNDCP = GNDLS = Ground

Paddle = 0V, 50 MHz Reference Unless Otherwise Noted

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

For price, delivery, and to place orders: Analog Devices, Inc.,

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106

Phone: 781-329-4700 • Order online at www.analog.com

Application Support: Phone: 1-800-ANALOG-D