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Hittite Microwave Corporation

HMC614LP4 Datasheet Preview

HMC614LP4 Datasheet

RMS And Peak To Average Power Detector

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HMC614LP4 / 614LP4E
v03.0109
RMS & Peak to Average
Power Detector 0.1 - 3.9 GHz
12
12 - 76
Typical Applications
The HMC614LP4(E) is ideal for:
• Log –> Root-Mean-Square (RMS) Conversion
• Received Signal Strength Indication (RSSI)
• Transmitter Signal Strength Indication (TSSI)
• RF Power Amplifier Efficiency Control
• Receiver Automatic Gain Control
• Transmitter Power Control
Features
IPWR Output: Instantaneous Power,
Crest Factor Measurement
RF Signal Wave shape & Crest Factor Independent
Supports Controller Mode [1]
±1 dB Detection Accuracy to 3.9 GHz
Input Dynamic Range: -57 dBm to +15 dBm
+5V Operation from -40°C to +85°C
Excellent Temperature Stability
Power-Down Mode
24 Lead 4x4mm QFN Package: 9 mm2
Functional Diagram
General Description
The HMC614LP4E RMS Power Detector is designed
for RF power measurement, and control applications
for frequencies up to 3.9 GHz. The detector provides
a “true RMS” representation of any RF/IF input sig-
nal. The output is a temperature compensated, mono-
tonic representation of real signal power, measured
with a differential input sensing range of 71 dB.
The HMC614LP4E 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 HMC614LP4E provides an indication of the in-
stantaneous or peak input power level normalized to
the average input power level (peak to average power
ratio) via the IPWR output. The capability of simultane-
ously measuring the instantaneous power (envelope
power) and the average true RMS power provides
crucial information about the RF input signal: Peak
Power, Average Power, Peak to average power and
RF Wave-Shape.
Electrical Specifications, TA = +25C, Vcc= 5V, CINT = 0.1 μF [2]
Parameter
Typ. Typ. Typ.
Input Frequency
100 900 1900
Dynamic Range (± 1 dB linearity Error) [1]
70 71 70
Differential Input Configuration Logarithmic Slope
Logarithmic Slope
37.5 37.5 37.6
Logarithmic Intercept
-69.8 -69.4 -68.8
Max. input Power at ±1 dB Error
13 15 >15
Min. input Power at ±1 dB Error
-57 -56 -55
Deviation vs. Temperature:
Deviation is measured from reference, which is the same CW Input @ 25° C
Differential Input Interface with 1:1 Balun Transformer (Over Full Input Frequency Range)
Typ.
2200
69
38.1
-67.4
>15
-54
Typ.
2700
62
39.6
-63.6
12
-50
Typ.
3000
62
Typ.
3500
53
41.0
-60.8
14
-48
44.5
-54.8
10
-43
±0.5
Typ.
3900
45
50.2
-49.2
5
-40
Units
MHz
dB
mV/dB
dBm
dBm
dBm
dB
[1] For more information regarding controller mode operation, please contact your Hittite sales representative or email sales@hittite.com
[2] Differential input drive via 1:1 balun transformer, VTGT = 2V unless otherwise noted.
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




Hittite Microwave Corporation

HMC614LP4 Datasheet Preview

HMC614LP4 Datasheet

RMS And Peak To Average Power Detector

No Preview Available !

www.DataSheet4U.com
v03.0109
HMC614LP4 / 614LP4E
RMS & Peak to Average
Power Detector 0.1 - 3.9 GHz
Table 2: Electrical Specifications [1]
Evaluation Kit (Diff. Input Config.) TA = +25C, Vcc= 5V, CINT = 0.1 μF Unless Otherwise Noted
Parameter
Typ. Typ. Typ. Typ. Typ. Typ. Typ. Typ. Units
Input Frequency
900
1900
2700
3900
MHz
Average Modulation Deviation Error from CW Input [2]
1 Carrier CDMA
0.02
0.06
0.08
0.03
dB
2 Carrier CDMA
0.02
0.05
0.11
0.02
dB
3 Carrier CDMA
0.15 0.16 0.23 0.16 dB
QAM256
0.01
0.03
0.05
0.01
dB
IPWR/IREF Outputs
IPWR Output Voltage
with CW Input (average power= instantaneous power) 1.6V
IREF Output Voltage
Same termination resistance as IPWR
1.6V
IPWR Output Slope for Input Power Change Normalized to Average Power [3]
Vtgt = 2V
Vtgt = 1V
190 mV
95 mV
IPWR Output Slope Variation with Temperature
from -40C to 85C
IPWR Output Modulation BW
for 3 dB voltage drop in Output Swing
[1] Differential input drive via 1:1 balun transformer.
[2] Modulation data taken with VTGT = 1V
[3] IPWR = a(Pin(t)/Pave)+b, a is defined as IPWR Slope for input power change normalized to average power.
3%
35 MHz
RMSOUT vs. Pin with Different
Modulations @ 1900 MHz, VTGT= 1V
RMSOUT Error vs. Pin with Different
Modulations @ 1900 MHz, VTGT= 1V
44
3.5 Ideal
CW
3 1 CARRIER CDMA
2 CARRIER CDMA
4 CARRIER CDMA
2.5 QAM256
3 CW
1 CARRIER CDMA
2 CARRIER CDMA
2 4 CARRIER CDMA
QAM256
1
20
1.5 -1
1 -2
0.5 -3
0
-70 -60 -50 -40 -30 -20 -10
INPUT POWER (dBm)
0
10
-4
-60 -50 -40 -30 -20 -10 0 10
INPUT POWER (dBm)
Absolute Error wrt to CW Response
@ 1900 MHz for Different Modulation
Schemes, VTGT= 1V
0.5
Absolute Error wrt to CW Response
@ 1900 MHz for Different Modulation
Schemes, VTGT= 2V
2
1 Carrier CDMA 0.06 dB Average
0.4
2 Carrier CDMA 0.05 dB Average
4 Carrier CDMA 0.16 dB Average
QAM256
0.11 dB Average
0.3
0.2
1 Carrier CDMA 0.20 dB Average
2 Carrier CDMA 0.35 dB Average
1.5 4 Carrier CDMA 0.74 dB Average
QAM256
0.11 dB Average
1
0.5
0.1
0
-70 -60 -50 -40 -30 -20 -10 0 10
INPUT POWER (dBm)
0
-70 -60 -50 -40 -30 -20 -10 0 10
INPUT POWER (dBm)
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 - 77


Part Number HMC614LP4
Description RMS And Peak To Average Power Detector
Maker Hittite Microwave Corporation
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