HMC600LP4 / 600LP4E
v02.0909
75 dB LOGARITHMIC
DETECTOR / CONTROLLER 50 - 4000 MHz
Typical Applications
Features
The HMC600LP4 / HMC600LP4E is ideal for IF and
RF applications in:
Wide Dynamic Range: up to 75 dB
Flexible Supply Voltage: +2.7V to +5.5V
Power-Down Mode
• Cellular/PCS/3G
• WiMAX, WiBro & Fixed Wireless
• Power Monitoring & Control Circuitry
• Receiver Signal Strength Indication (RSSI)
• Automatic Gain & Power Control
Excellent Stability over Temperature
Compact 4x4mm Leadless SMT Package
General Description
Functional Diagram
12
The HMC600LP4(E) Logarithmic Detector/Controller
converts RF signals at its input, to a proportional DC
voltage at its output. The HMC600LP4(E) employs
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 -95 dBm. The HMC600LP4(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.
[1]
Electrical Specifications, TA = +25C, PWD = 0V, Vcc1, Vcc2 = +3.3V
Parameter
Typ.
Typ.
100
74
Typ.
500
74
Typ.
900
74
Typ.
1900
70
Typ.
2500
66
Typ.
3500
51
Typ.
4000
48
Units
MHz
dB
Input Frequency
50
3 dB Dynamic Range
3 dB Dynamic Range Center
1 dB Dynamic Range
74
-30
64
-30
64
-30
64
-30.5
65
-31.0
62
-31.0
59
-27
-23.5
41
dBm
dB
44
Output Slope
19.6
-96
-2.7
19.5
-96
-2.8
19.4
-96
-3.6
19.2
-96
19.1
-95
19.5
-93
21.0
-79
22.3
-72
mV/dB
dBm
mdB/°C
Output Intercept
Temperature Sensitivity @ -10 dBm Input [2]
-4.8
-6.9
-7.4
-8.3
-12.9
[1] Detector mode measurements; LOGOUT (Pin 17) is shorted to VSET (Pin 16).
[2] Measured from T = -40C to T = +85C
A
A
Parameter
Conditions
Min.
Typ.
10
Max.
Units
dB
RF Input (INP)
Return Loss
F = 50 - 4000 MHz, Zo = 50Ω, See plot
LOGOUT Interface
Open Loop Impedance
Current Drive (Source)
16
kΩ
0.4
mA
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
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