HMC614LP4 / 614LP4E
v04.0309
RMS & Peak to Average
Power Detector 0.1 - 3.9 GHz
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
12
POWER DETECTORS - SMT
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 Specifi cations,
T
A
= +25C
, Vcc= 5V, C
INT
= 0.1
μF
[2]
Parameter
Input Frequency
Dynamic Range (± 1 dB linearity
Error)
[1]
Typ.
100
70
Typ.
900
71
Typ.
1900
70
Typ.
2200
69
Typ.
2700
62
Typ.
3000
62
Typ.
3500
53
Typ.
3900
45
Units
MHz
dB
Differential Input Configuration Logarithmic Slope
Logarithmic Slope
Logarithmic Intercept
Max. input Power at ±1 dB Error
Min. input Power at ±1 dB Error
37.5
-69.8
13
-57
37.5
-69.4
15
-56
37.6
-68.8
>15
-55
38.1
-67.4
>15
-54
39.6
-63.6
12
-50
41.0
-60.8
14
-48
44.5
-54.8
10
-43
50.2
-49.2
5
-40
mV/dB
dBm
dBm
dBm
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)
±0.5
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.
12 - 76
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
HMC614LP4 / 614LP4E
v04.0309
RMS & Peak to Average
Power Detector 0.1 - 3.9 GHz
Table 2: Electrical Specifi cations
[1]
Evaluation Kit (Diff. Input Confi g.) T
A
= +25C, Vcc= 5V, C
INT
= 0.1
μF
Unless Otherwise Noted
Parameter
Input Frequency
Average Modulation Deviation Error from CW Input
[2]
1 Carrier CDMA
2 Carrier CDMA
3 Carrier CDMA
QAM256
IPWR/IREF Outputs
IPWR Output Voltage
IREF Output Voltage
IPWR Output Slope for Input Power Change Normalized to Average Power
[3]
IPWR Output Slope Variation with Temperature
with CW Input (average power= instantaneous power)
Same termination resistance as IPWR
Vtgt = 2V
Vtgt = 1V
from -40C to 85C
1.6V
1.6V
190 mV
95 mV
3%
35 MHz
0.02
0.02
0.15
0.01
0.06
0.05
0.16
0.03
0.08
0.11
0.23
0.05
0.03
0.02
0.16
0.01
dB
dB
dB
dB
Typ.
900
Typ.
Typ.
1900
Typ.
Typ.
2700
Typ.
Typ.
Typ.
Units
MHz
3900
12
POWER DETECTORS - SMT
12 - 77
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.
RMSOUT vs. Pin with Different
Modulations @ 1900 MHz, VTGT= 1V
4
3.5
3
RMSOUT (V)
2.5
2
1.5
1
0.5
0
-70
Ideal
CW
1 CARRIER CDMA
2 CARRIER CDMA
4 CARRIER CDMA
QAM256
RMSOUT Error vs. Pin with Different
Modulations @ 1900 MHz, VTGT= 1V
4
3
2
ERROR (dB)
1
0
-1
-2
-3
-4
-60
CW
1 CARRIER CDMA
2 CARRIER CDMA
4 CARRIER CDMA
QAM256
-60
-50
-40
-30
-20
-10
0
10
-50
-40
-30
-20
-10
0
10
INPUT POWER (dBm)
INPUT POWER (dBm)
Absolute Error wrt to CW Response
@ 1900 MHz for Different Modulation
Schemes, VTGT= 1V
0.5
1 Carrier CDMA
2 Carrier CDMA
4 Carrier CDMA
QAM256
0.06 dB Average
0.05 dB Average
0.16 dB Average
0.11 dB Average
Absolute Error wrt to CW Response
@ 1900 MHz for Different Modulation
Schemes, VTGT= 2V
2
1 Carrier CDMA
2 Carrier CDMA
4 Carrier CDMA
QAM256
0.20 dB Average
0.35 dB Average
0.74 dB Average
0.11 dB Average
0.4
ERROR (dB)
1.5
ERROR (dB)
0.3
1
0.2
0.5
0.1
0
-70
-60
-50
-40
-30
-20
-10
0
10
0
-70
-60
-50
-40
-30
-20
-10
0
10
INPUT POWER (dBm)
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
HMC614LP4 / 614LP4E
v04.0309
RMS & Peak to Average
Power Detector 0.1 - 3.9 GHz
Table 3: Electrical Specifi cations
III
,
HMC610LP4E Evaluation Kit (Diff. Input Confi g.), TA = +25C, Vcc= +5V, C
INT
= 0.1 μF, Unless Otherwise Noted.
Parameter
Differential Input Configuration
Input Network Return Loss
[1]
Input Resistance between IN+ and IN-
Input Voltage Range
RMSOUT Output
Output Voltage Range
Source/Sink Current Compliance
RL = 1kΩ, CL = 4.7pF
[2]
RMSOUT held at VCC/2
With CINT = 0
With CINT = 0, Cofs = 0
100 / 5
0.4 - 3.2
8 / 0.35
V
mA
pF
10
6
V/s
[1]
Conditions
Min.
Typ.
Max.
Units
>10
200
2.25
dB
Ω
V
Between pins 3 and 4
VDIFFIN = VIN+ - V
IN-
12
POWER DETECTORS - SMT
Max. Load Capacitance
Output Slew Rate (rise / fall)
V
SET
Input (Negative Feedback Terminal)
Input Voltage Range
[2]
Input Resistance
V
REF
Output (Reference Voltage)
V
REF
Output Voltage
V
REF
Change
V
TGT
Input (RMS Target Interface)
Input Voltage Range
Input Resistance
ENX Logic Input (Power Down Control)
Input High Voltage
Input Low Voltage
Input High Current
Input Low Current
Input Capacitance
Power Supply
Supply Voltage
Supply Current with Pin = -70 dBm
Supply Current with Pin = 0 dBm
Standby Mode Supply Current
0.4 - 3.2
1
V
MΩ
2.95
Over Full Temperature Range
20
V
mV
3.65
1
V
MΩ
Standby Mode Active
Normal Operation
3.9
1.2
1
1
0.5
V
V
μA
μA
pF
4.5
Over Full Temperature Range
Over Full Temperature Range
ENX = Hi
5
65
83
1
5.5
76
95
V
mA
mA
mA
[1] Performance of differential input configuration is limited by balun. Balun used is MACOM ETC1-1-13 good over 4.5 MHz to 3000 MHz
[2] For nominal slope / intercept setting.
RMSOUT & Error vs. Pin @ 100 MHz
[1]
4
Ideal
RMSOUT +25C
RMSOUT +85C
RMSOUT -40C
RMSOUT & Error vs. Pin @ 900 MHz
[1]
4
4
Ideal
RMSOUT +25C
RMSOUT +85C
RMSOUT -40C
4
3
LOGOUT (V)
2
LOGOUT (V)
ERROR (dB)
3
2
ERROR (dB)
2
0
2
0
1
ERR +25C
ERR +85C
ERR -40C
-2
1
ERR +25C
ERR +85C
ERR -40C
-2
0
-70
-60
-50
-40
-30
-20
-10
0
10
-4
0
-70
-60
-50
-40
-30
-20
-10
0
10
-4
INPUT POWER (dBm)
INPUT POWER (dBm)
[1] CW Input Waveform
12 - 78
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
HMC614LP4 / 614LP4E
v04.0309
RMS & Peak to Average
Power Detector 0.1 - 3.9 GHz
RMSOUT & Error vs. Pin @ 1900 MHz
[1]
4
Ideal
RMSOUT +25C
RMSOUT +85C
RMSOUT -40C
RMSOUT & Error vs. Pin @ 2200 MHz
[1]
4
Ideal
RMSOUT +25C
RMSOUT +85C
RMSOUT -40C
4
4
3
LOGOUT (V)
2
LOGOUT (V)
ERROR (dB)
3
2
ERROR (dB)
2
0
2
0
1
ERR +25C
ERR +85C
ERR -40C
-2
1
ERR +25C
ERR +85C
ERR -40C
-2
0
-70
-60
-50
-40
-30
-20
-10
0
10
-4
0
-70
-60
-50
-40
-30
-20
-10
0
10
-4
12
POWER DETECTORS - SMT
12 - 79
INPUT POWER (dBm)
INPUT POWER (dBm)
RMSOUT & Error vs. Pin @ 2700 MHz
[1]
4
Ideal
RMSOUT +25C
RMSOUT +85C
RMSOUT -40C
RMSOUT & Error vs. Pin @ 3000 MHz
[1]
4
Ideal
RMSOUT +25C
RMSOUT +85C
RMSOUT -40C
4
4
3
LOGOUT (V)
2
LOGOUT (V)
ERROR (dB)
3
2
ERROR (dB)
2
0
2
0
1
ERR +25C
ERR +85C
ERR -40C
-2
1
ERR +25C
ERR +85C
ERR -40C
-2
0
-70
-60
-50
-40
-30
-20
-10
0
10
-4
0
-70
-60
-50
-40
-30
-20
-10
0
10
-4
INPUT POWER (dBm)
INPUT POWER (dBm)
RMSOUT & Error vs. Pin @ 3500 MHz
[1]
4
Ideal
RMSOUT +25C
RMSOUT +85C
RMSOUT -40C
RMSOUT & Error vs. Pin @ 3900 MHz
[1]
4
Ideal
RMSOUT +25C
RMSOUT +85C
RMSOUT -40C
4
4
3
LOGOUT (V)
2
LOGOUT (V)
ERROR (dB)
3
2
ERROR (dB)
2
0
2
0
1
ERR +25C
ERR +85C
ERR -40C
-2
1
ERR +25C
ERR +85C
ERR -40C
-2
0
-70
-60
-50
-40
-30
-20
-10
0
10
-4
0
-70
-60
-50
-40
-30
-20
-10
0
10
-4
INPUT POWER (dBm)
INPUT POWER (dBm)
[1] CW Input Waveform
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
HMC614LP4 / 614LP4E
v04.0309
RMS & Peak to Average
Power Detector 0.1 - 3.9 GHz
Frequency vs. Intercept
Over Temperature
[1]
-40
-45
INTERCEPT (dBm)
-50
-55
-60
-65
-70
-75
-80
+25C
+85C
-40C
Frequency vs. Intercept
Over Supply Voltage
[1]
-40
-45
INTERCEPT (dBm)
-50
-55
-60
-65
-70
4.5V
5.0V
5.5V
12
POWER DETECTORS - SMT
-75
-80
0
500
1000
1500
2000
2500
3000
3500
4000
FREQUENCY (MHz)
0
500
1000
1500
2000
2500
3000
3500
4000
FREQUENCY (MHz)
Frequency vs. Slope
Over Supply Voltage
[1]
60
55
SLOPE (mV/dB)
50
45
40
35
30
0
500
1000
1500
2000
2500
3000
3500
4000
FREQUENCY (MHz)
Frequency vs. Slope
Over Temperature
[1]
60
55
SLOPE (mV/dB)
4.5V
5.0V
5.5V
50
45
40
35
30
0
500
1000
+25C
+85C
-40C
1500
2000
2500
3000
3500
4000
FREQUENCY (MHz)
RMSOUT vs. Pin, Slope Adjustment
[1]
4
RMSOUT @ R1= 24KOhms
RMSOUT @ R1= 12KOhms
RMSOUT @ R1= 6.8KOhms
RMSOUT vs. Pin, Intercept Adjustment
[2]
4
RMSOUT @ VSET = -1.0V
RMSOUT @ VSET = -0.5V
RMSOUT @ VSET = 0V
RMSOUT @ VSET = 0.5V
RMSOUT @ VSET = 1.0V
VSET = -1.0V, X Intercept = -82.2dBm
VSET = -0.5V, X Intercept = -75.5dBm
3
RMSOUT (V)
RMSOUT (V)
Slope = 26mv/dB
1
Slope = 35mV/dB
0
-70
-60
-50
-40
-30
-20
-10
0
10
3
2
Slope = 48mV/dB
2
1
VSET = 0V, X Intercept = -68.8dBm
VSET = 0.5V, X Intercept = -62.1dBm
VSET = 1.0V, X Intercept = -55.4dBm
0
-70
-60
-50
-40
-30
-20
-10
0
10
INPUT POWER (dBm)
INPUT POWER (dBm)
[1] See application circuit for location of R1
[2] See application section Log-Slope, R
FBK
= 12kΩ, R
SET
= 24KΩ
[3] V
TGT
1V, Average Input Power = 0 dBm
[4] V
TGT
2V, Average Input Power = 0 dBm
12 - 80
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
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