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POWER DETECTORS - SMT
12
12 - 18
HMC602LP4 / 602LP4E
General Description
Features
Functional Diagram
The HMC602LP4(E) Logarithmic Detector/Controller
converts RF signals at its input, to a proportional DC
voltage at its output. The HMC602LP4(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 -25mV/
dB and an intercept of 18 dBm (23 dBm for ƒ > 5.8 GHz).
The HMC602LP4(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 70 dB
High Accuracy: ±1 dB with 60 dB Range Up To 6 GHz
Fast: 10ns Output Response Time
Supply Voltage: +5V
Power-Down Mode
Excellent Stability over Temperature
Buffered Temperature Sensor Output
Compact 4x4mm Leadless SMT Package
Typical Applications
The HMC602LP4(E) is ideal for IF and RF applica-
tions in:
• Cellular/PCS/3G
• WiMAX, WiBro, WLAN, Fixed Wireless & Radar
• Power Monitoring & Control Circuitry
• Receiver Signal Strength Indication (RSSI)
• Automatic Gain & Power Control
Electrical Speci cations, TA = +25C, EN= 5V, Vcc1, Vcc2, Vcc3= +5V [1]
Parameter Typ. Typ. Typ. Typ. Typ. Typ. Typ. Typ. Typ. Units
Input Frequency 50 100 900 1900 2200 3600 5800 7000 8000 MHz
±3 dB Dynamic Range 69 70 71 71 71 68 66 61 56 dB
±3 dB Dynamic Range Center -24.5 -25 -25.5 -25.5 -25.5 -24 -23 -20.5 -19 dBm
±1 dB Dynamic Range 61 61 62 62 63 62 63 56 49 dB
Output Intercept 18.2 18 18.7 19.8 20.2 23.1 24.4 23 21.6 dBm
Output Slope -25.6 -25.5 -25.3 -25 -25 -24.6 -25.4 -27.5 -30 mV/dB
Temperature Sensitivity @ -10 dBm Input [2] 16 16 14 14 15 16 15 14 22 mdB/°C
[1] Detector mode measurements; LOGOUT (Pin 15) is shorted to VSET (Pin 16).
[2] Measured from TA = -40C to TA = +85C
[3] C9 removed from production board
Parameter Conditions Min. Typ. Max. Units
LOGOUT Interface
Output Voltage Range 0Vcc -1.0V
Output Fall Time -10 dBm Input Pulsed; Measured from 10% to 90% [3] 9.5 ns
Output Rise Time -10 dBm Input Pulsed; Measured from 10% to 70% [3] 10 ns
VSET Interface
Input Impedance 30 kΩ
Input Voltage Range 0.25 to 2.0 V
Low Frequency Gain VSET to LOGOUT 56 dB
70 dB, LOGARITHMIC
DETECTOR / CONTROLLER, 1 - 8000 MHz
v03.0209