HMC1020LP4E
v02.0511
RMS POWER DETECTOR
SINGLE-ENDED, DC - 3.9 GHz
Features
Broadband single-ended rF Input
±1 dB Detection Accuracy to 3.9 GHz
Input Dynamic range: -65 dBm to +7 dBm
rF signal wave shape & crest Factor Independent
Digitally Programmable Integration Bandwidth
excellent temperature stability
Power-Down Mode
24 Lead 4x4mm sMt Package: 16mm²
Typical Applications
the HMc1020LP4e is ideal for:
• Log –> Root-Mean-Square (RMS) Conversion
• Tx/Rx Signal Strength Indication (TSSI/RSSI)
• RF Power Amplifier Efficiency Control
• Receiver Automatic Gain Control
• Transmitter Power Control
11
Power Detectors - sMt
Functional Diagram
General Descriptions
the HMc1020LP4e Power Detector is designed for
rF power measurement and control applications for
frequencies up to 3.9 GHz. the detector provides
an accurate rMs representation of any broadband,
single-ended rF/IF input signal. the output is a tem-
perature compensated, monotonic representation of
real signal power, measured with an input sensing
range of 72 dB.
the HMc1020LP4e is ideally suited to those wide
bandwidth, wide dynamic range applications requir-
ing repeatable measurement of real signal power,
especially where rF/IF wave shape and/or crest factor
change with time.
the integration bandwidth of the HMc1020LP4e is
digitally programmable with the use of input pins
scI1-4 over a range of more than 3 decades. this
allows the user to dynamically set the operation
bandwidth and also permits the detection of different
types of modulations on the same platform.
HMc1020LP4e features an internal op-amp at the out-
put stage, which provides for slope / intercept adjust-
ments and enables controller application.
Electrical Specifications I
Parameter
Dynamic Range
(±1dB Error)
[1]
T
A
= +25 °C, Vcc = 5V, Sci4 = Sci1 = 0V, Sci3 = Sci2 = 5V, Unless Otherwise Noted
typ.
100
72
typ.
900
72
typ.
1900
71
typ.
2200
70
typ.
2700
66
typ.
3500
58
1
typ.
3900
53
Units
MHz
dB
dB
Input Frequency
Single Ended Input Configuration
Deviation vs Temperature:
(Over full temperature range -40 °C to 85 °C).
Deviation is measured from reference, which is the same WCDMA input at 25 °C.
[1] With WCDMA 4 Carrier (TMI1-64 DPCH)
11 - 1
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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
HITTITE [ HITTITE MICROWAVE CORPORATION ]
