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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HMC905LP3E

6 GHz LOW NOISE PROGRAMMABLE

DIVIDER (N = 1 to 4)

v01.0414

Pin Description (Continued)

Pin Number

Function

Description

Interface Schematic

10

IOUTN

Divider Negative Output, Open Drain.

Typically 50 Ohms connected to Vcc.

11

IOUTP

Divider Positive Output, Open Drain.

Typically 50 Ohms connected to Vcc.

Application Note:

The HMC905LP3E is a high performance RF divider. Such dividers are high gain devices with internal feedback. The

device will oscillate if used with AC coupled RF inputs and if no RF input is applied. Normally, if the RF input signal

is removed the device should be disabled, or it should be placed in divide by 1 mode. The device is stable in divide

by one mode with no RF input. The device will oscillate in divide 2, 3, or 4 modes with no RF input. In general, very

small RF input levels will stop all oscillations. At the minimum rated RF input sensitivity level or higher, no oscillations

or spurious signals exist and excellent low noise performance is achieved. For input frequency lower than 400 MHz,

square wave input signal is recommended.

For single ended applications, apply the signal on the positive input RFinp and terminate the unused output with 50

ohms.

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