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20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
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POWER DETECTORS - SMT
12
12 - 2
HMC600LP4 / 600LP4E
General Description
Features
Functional Diagram
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 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 -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.
Wide Dynamic Range: up to 75 dB
Flexible Supply Voltage: +2.7V to +5.5V
Power-Down Mode
Excellent Stability over Temperature
Compact 4x4mm Leadless SMT Package
Typical Applications
The HMC600LP4 / HMC600LP4E 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
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 66 51 48 dB
±3 dB Dynamic Range Center -30 -30 -30 -30.5 -31.0 -31.0 -27 -23.5 dBm
±1 dB Dynamic Range 64 64 64 65 62 59 44 41 dB
Output Slope 19.6 19.5 19.4 19.2 19.1 19.5 21.0 22.3 mV/dB
Output Intercept -96 -96 -96 -96 -95 -93 -79 -72 dBm
Temperature Sensitivity @ -10 dBm Input [2] -2.7 -2.8 -3.6 -4.8 -6.9 -7.4 -8.3 -12.9 mdB/°C
[1] Detector mode measurements; LOGOUT (Pin 17) is shorted to VSET (Pin 16).
[2] Measured from TA = -40C to TA = +85C
Parameter Conditions Min. Typ. Max. Units
RF Input (INP)
Return Loss F = 50 - 4000 MHz, Zo = 50Ω, See plot 10 dB
LOGOUT Interface
Open Loop Impedance 16 kΩ
Current Drive (Source) 0.4 mA
75 dB LOGARITHMIC
DETECTOR / CONTROLLER 50 - 4000 MHz
v02.0909