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

14

HMC702LP6CE

v10.0812

14 GHz 16-BIT FRACTIONAL-N PLL

External VCO with Active Inverting OpAmp Loop Filter

an external opamp active filter is required to support external Vcos with tuning voltages above 5V. if an inverting

polarity and obtain correct closed loop operation.

Figure 9. Conventional Synthesizer with VCO

Temperature Sensor

the HMc702LP6cE features a built in temperature sensor which may be used as a general purpose temperature

sensor.

the temperature sensor features a built in 3-bit quantizer that allows the temperature to be read in register tsens_

over a -40°c to +100°c range as follows:

tn = floor {(temperature +40) / 17.5 where Tn is the decimal value of register tsens_temperature}

(EQ 7)

0

1

2

3

4

5

6

7

-40

-20

0

20

40

60

80

100

TEMPERATURE (°C)

Figure 10. Typical Temperature Sensor Quantizer output

temperature sensor slope is 17.5 mV/lsb. absolute tolerances on the temperature sensor thresholds may vary by up

to ±10°c worst case.

nominal temperature is given by:

(EQ 8)

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