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 - 115

General Description

The HMC714LP5E is a dual-channel RMS power detector designed for high accuracy RF power signal measurement

and control applications over the 0.1 to 3.9 GHz frequency range. The device can be used with input signals having

RMS values from -55 dBm to +15 dBm referenced to 50 Ω and large crest factors with no accuracy degradation.

Each RMS detection channel is fully specified for operation up to 3.9 GHz, over a wide dynamic range of 70 dB. The

RMSB pins with scaled slopes of 37 mV/dB. The RMSA and RMSB channel outputs provide RMS detection perfor-

mance in terms of dynamic range, logarithmic linearity and temperature stability similar to Hittite’s HMC614LPE RMS

Detector. The RMSA and RMSB outputs provide a read of average input signal power, or true-RMS power. Frequency

detection up to 5.8 GHz is possible, with excellent channel matching of less than 0.5 dB (for the single-ended configu-

ration), over a wide range of input frequencies and with low temperature drift.

The HMC714LP5E also provides “channel difference” output ports via pins OUTP and OUTN, permitting measure-

ments of the input signal power ratio between the two power detection channels. These outputs may be used in

single-ended or differential configurations. An input voltage applied to the VLVL input pin is used to set the common

mode voltage reference level for OUTP and OUTN. On the Hittite evaluation board, the VLVL pin is shorted to VREF2

output to provide a nominal bias voltage of 2.5V; but any external bias voltage may be used to set VLVL.

The HMC714LP5E also features INSA and INSB pins which provide a measurement of instantaneous signal power

normalized to average power level in each channel. Reading both the INSA/INSB and RMSA/RMSB output voltage

signals provides a very informative picture of the RF input signal; providing peak power, average power, peak-to-

average power, and RF wave shape.

The device also includes a buffered PTAT temperature sensor output with a temperature scaling factor of 2.2 mV/°C

yielding a typical output voltage of 600 mV at 0°C.

The HMC714LP5E operates over the -40 to +85C temperature range, and is available in a compact, 32-lead 4x4 mm

leadless QFN package

Parameter

Typ.

Typ.

Typ.

Typ.

Typ.

Typ.

Typ.

Typ.

Units

Dynamic Range (± 1 dB measurement error)

Input Signal Frequency

100

500

900

1900

2200

3000

3500

3900

MHz

Differential Input Configuration, Channel A

68

68

69

72

71

66

47

42

dB

Differential Input Configuration, Channel B

68

69

69

71

71

64

45

41

dB

Input Signal Frequency

100

900

1800 ± 300

2200 ± 300

3600 ± 300

MHz

Single-Ended Input Configuration, Channel A

70

62

71

69

61

dB

Single-Ended Input Configuration, Channel B

70

62

71

69

61

dB

Channel Isolations

Input Signal Frequency

100

500

900

1900

2200

3000

3500

3900

MHz

Input A to Input B Isolation

(Baluns Macom ETC1-1-13 at both channels)

72

70

69

53

51

56

48

47

dB

Input A to RMS

(PIN

60+

56

46

44

47

dB

Input B to RMS

(PIN

60+

58

46

44

48

dB

Input A to RMS

(PIN

47

39

dB

Input B to RMS

(PIN

43

28

dB

HMC714LP5 / 714LP5E

v05.0309

DUAL RMS POWER DETECTOR

0.1 - 3.9 GHz