7

7 - 60

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

The HMC612LP4(E) Logarithmic Detector/Controller is

ideal for converting input signals with frequencies in the

50 Hz to 3 GHz range, to a proportional DC voltage at

its output. The HMC612LP4(E) employs a successive

compression technology which delivers extremely high

dynamic range and conversion accuracy over a wide

input frequency range. As the input signal is increased,

successive amplifiers move into saturation one by one

creating an accurate approximation of the logarithm

function. The output of a series of square law detectors

is summed, converted into voltage domain and buff-

ered to drive the LOGOUT output. For detection mode,

the LOGOUT pin is shorted to the VSET input and will

provide a nominal logarithmic slope of 19 mV/dB and an

intercept of -99 dBm. The HMC612LP4(E) can also be

used in the controller mode where an external voltage

is applied to the VSET pin, to create an AGC or APC

feedback loop.

General Description

Features

Functional Diagram

Wide Input Bandwidth: 50 Hz to 3 GHz

Wide Dynamic Range: Up to 74 dB

High Accuracy: ±1 dB with 60 dB Range Up to 0.9 GHz

Supply Voltage: +2.7V to +5.5V

Excellent Stability over Temperature

Power-Down Mode

Compact 4x4mm Leadless SMT Package

Typical Applications

The HMC612LP4(E) is ideal for IF and RF applica-

tions in:

• Cellular/PCS/3G

• WiMAX, WiBro, WLAN, Fixed Wireless & Radar

• Power Monitoring & Control Circuitry

• Receiver Signal Strength Indication (RSSI)

• Automatic Gain & Power Control

Parameter

Typ.

Typ.

Typ.

Typ.

Typ.

Typ.

Typ.

Typ.

Typ.

Typ.

Typ.

Typ.

Units

Input Frequency

0.00005 0.0001

0.001

0.01

0.1

1

10

100

900

1900

2500

3000

MHz

±3 dB Dynamic Range

75

75

75

75

74

74

74

74

72

64

60

55

dB

±3 dB Dynamic Range Center

-30

-30

-30

-31

-33

-34

-34

dBm

±3 dB Dynamic Range Center

-45

-44.5

-45.5

-45

-45

dBV

±1 dB Dynamic Range

68

67

68

67

65

68

66

66

64

55

52

45

dB

Output Slope

19.7

19.7

19.6

19.6

19.8

19.7

19.8

19.8

19.4

19.4

19.8

20.8

mV/dB

Output Intercept

-94.5

-93.9

-93.8

-94.8

-92.5

-91.3

-86.4

dBm

Output Intercept

-110

-110.2

-110.6

-110.6

-110.0

dBV

Temperature

-9.9

-11.9

-11.3

-11.3

-11.3

mdBV/°C

Temperature

-12.5

-12.2

-11.7

-11.2

-11.7

-12.1

-13.4

mdBm/°C

[1] Detector mode measurements; LOGOUT (Pin 17) is shorted to VSET (Pin 18).

75 dB LOGARITHMIC

DETECTOR / CONTROLLER, 50 Hz - 3000 MHz

v01.0108

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