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POWER DETECTORS - SMT
12
12 - 10
HMC601LP4 / 601LP4E
General Description
Features
Functional Diagram
The HMC601LP4(E) Logarithmic Detector/Controller
converts RF signals at its input, to a proportional DC
voltage at its output. The HMC601LP4(E) employ
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 ampli ers
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
-100dBm. The HMC601LP4(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.
The HMC601LP4(E) provides a 15/34ns (rise/fall time)
response time enabling RF burst detection to a pulse
rate beyond 20 MHz.
Wide Dynamic Range: up to 75 dB
Fast Pulse Response: 15/34ns (Rise/Fall Time)
Flexible Supply Voltage: +2.7V to +5.5V
Power-Down Mode
Excellent Stability over Temperature
Compact 4x4mm Leadless SMT Package
Typical Applications
The HMC601LP4(E) is ideal for IF and RF
applications in:
• Cellular/PCS/3G
• WiMAX, WiBro & Fixed Wireless
• Power Monitoring & Control Circuitry
• Receiver Signal Strength Indication (RSSI)
• Automatic Gain & Power Control Circuits
Electrical Speci cations, TA = +25C, PWD = 0V, Vcc1, Vcc2 = +3.3V [1]
Parameter Typ. Typ. Typ. Typ. Typ. Typ. Typ. Typ. Units
Input Frequency 50 100 500 900 1900 2500 3500 4000 MHz
±3 dB Dynamic Range 74 74 74 74 70 68 54 52 dB
±3 dB Dynamic Range Center -31 -31 -31 -31 -31.5 -31.5 -27 -23 dBm
±1 dB Dynamic Range 68 68 69 69 67 65 47 46 dB
Output Slope 19.5 19.4 19.2 19.1 19.0 19.4 20.9 19.6 mV/dB
Output Intercept -99 -99 -100 -100 -98 -96 -85 -79 dBm
Temperature Sensitivity @ -10 dBm Input [2] -4.2 -3.8 -3.5 -2.4 -0.8 -0.8 -4.4 -3.5 mdB/°C
[1] Detector mode measurements; LOGOUT (Pin 17) is shorted to VSET (Pin 16).
[2] Measured from TA = -40C to TA = +85C
75 dB, FAST SETTLING, LOGARITHMIC
DETECTOR / CONTROLLER 10 - 4000 MHz
v01.0509
Parameter Conditions Min. Typ. Max. Units
RF Input (INP)
Return Loss F = 10 - 4000 MHz, Zo = 50Ω, See plot 10 dB
LOGOUT Interface
Open Loop Impedance (Simulated) 12 kΩ