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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

General Description

Features

Functional Diagram

The HMC602LP4(E) Logarithmic Detector/Controller

converts RF signals at its input, to a proportional DC

voltage at its output. The HMC602LP4(E) employs

a successive compression topology which delivers

extremely high dynamic range and conversion accuracy

over a wide input frequency range. As the input power

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 buffered 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 -25mV/

dB and an intercept of 12 dBm (19 dBm for ƒ ≥ 5.8 GHz).

The HMC602LP4(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.

Wide Dynamic Range: up to 70 dB

High Accuracy: ±1 dB with 60 dB Range Up To 6 GHz

Fast: 8ns Output Response Time

Supply Voltage: +5V

Power-Down Mode

Excellent Stability over Temperature

Buffered Temperature Sensor Output

Compact 4x4mm Leadless SMT Package

Typical Applications

The HMC602LP4(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.

Units

Input Frequency

50

100

900

1900

2200

3600

5800

7000

7500

8000

MHz

±3 dB Dynamic Range

70

70

72

71

72

70

66

62

59

57

dB

±3 dB Dynamic Range Center

-30

-30

-30.5

-32.5

-33

-31

-25

-22

-22

-20.5

dBm

±1 dB Dynamic Range

61

61

63

63

62

57

60

55

50

46

dB

Output Slope

-25.7

-25.7

-25.3

-25.0

-24.9

-24.8

-25.5

-27.5

-28.9

-30.2

mV/dB

Output Intercept

+13.2

+13.2

+13.4

+13.0

+12.4

+14.2

+21.3

+20.2

+19.2

+18.5

dBm

12.3

11.2

11.4

11.6

12.5

14.7

16.9

24.6

27.7

33.0

mdB/°C

[1] Detector mode measurements; LOGOUT (Pin 15) is shorted to VSET (Pin 16).

70 dB, LOGARITHMIC

DETECTOR / CONTROLLER, 1 - 8000 MHz

v01.0407