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

12

12 - 10

General Description

Features

Functional Diagram

The HMC601LP4(E) Logarithmic Detector/Controller

converts RF signals at its input, to a proportional DC

voltage at its output. The HMC601LP4(E) employ

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 19mV/dB and an intercept of

-100dBm. The HMC601LP4(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.

The HMC601LP4(E) provides a 15/34ns (rise/fall time)

response time enabling RF burst detection to a pulse

rate beyond 20 MHz.

Wide Dynamic Range: up to 75 dB

Fast Pulse Response: 15/34ns (Rise/Fall Time)

Flexible Supply Voltage: +2.7V to +5.5V

Power-Down Mode

Excellent Stability over Temperature

Compact 4x4mm Leadless SMT Package

Typical Applications

The HMC601LP4(E) is ideal for IF and RF

applications in:

• Cellular/PCS/3G

• WiMAX, WiBro & Fixed Wireless

• Power Monitoring & Control Circuitry

• Receiver Signal Strength Indication (RSSI)

• Automatic Gain & Power Control Circuits

Parameter

Typ.

Typ.

Typ.

Typ.

Typ.

Typ.

Typ.

Typ.

Units

Input Frequency

50

100

500

900

1900

2500

3500

4000

MHz

±3 dB Dynamic Range

74

74

74

74

70

68

54

52

dB

±3 dB Dynamic Range Center

-31

-31

-31

-31

-31.5

-31.5

-27

-23

dBm

±1 dB Dynamic Range

68

68

69

69

67

65

47

46

dB

Output Slope

19.5

19.4

19.2

19.1

19.0

19.4

20.9

19.6

mV/dB

Output Intercept

-99

-99

-100

-100

-98

-96

-85

-79

dBm

-4.2

-3.8

-3.5

-2.4

-0.8

-0.8

-4.4

-3.5

mdB/°C

[1] Detector mode measurements; LOGOUT (Pin 17) is shorted to VSET (Pin 16).

75 dB, FAST SETTLING, LOGARITHMIC

DETECTOR / CONTROLLER 10 - 4000 MHz

v01.0509

Parameter

Conditions

Min.

Typ.

Max.

Units

RF Input (INP)

Return Loss

F = 10 - 4000 MHz, Zo = 50Ω, See plot

10

dB

LOGOUT Interface

Open Loop Impedance

(Simulated)

12

kΩ

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