HMC612LP4 / 612LP4E
v01.0108
75 dB LOGARITHMIC
DETECTOR / CONTROLLER, 50 Hz - 3000 MHz
Typical Applications
Features
The HMC612LP4(E) is ideal for IF and RF applica-
tions in:
Wide Input Bandwidth: 50 Hz to 3 GHz
Wide Dynamic Range: Up to 74 dB
High Accuracy: 1 dB with 60 dB Range Up to 0.9 GHz
Supply Voltage: +2.7V to +5.5V
• Cellular/PCS/3G
• WiMAX, WiBro, WLAN, Fixed Wireless & Radar
• Power Monitoring & Control Circuitry
• Receiver Signal Strength Indication (RSSI)
• Automatic Gain & Power Control
Excellent Stability over Temperature
Power-Down Mode
7
Compact 4x4mm Leadless SMT Package
Functional Diagram
General Description
The HMC612LP4(E) Logarithmic Detector/Controller is
ideal for converting input signals with frequencies in the
50 Hz to 3 GHz range, to a proportional DC voltage at
its output. The HMC612LP4(E) employs a successive
compression technology which delivers extremely high
dynamic range and conversion accuracy over a wide
input frequency range. As the input signal 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 buff-
ered 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 19 mV/dB and an
intercept of -99 dBm. The HMC612LP4(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
Parameter
Typ.
Typ.
Typ.
Typ.
0.01
75
Typ.
0.1
74
Typ.
1
Typ.
10
Typ.
100
74
Typ.
900
72
Typ.
1900
64
Typ.
2500
60
Typ.
3000
55
Units
MHz
dB
Input Frequency
0.00005 0.0001 0.001
3 dB Dynamic Range
3 dB Dynamic Range Center
3 dB Dynamic Range Center
1 dB Dynamic Range
Output Slope
75
75
75
74
74
-30
-30
-30
-31
-33
-34
-34
dBm
dBV
dB
-45
68
-44.5
67
-45.5
68
-45
67
-45
65
68
66
66
64
55
52
45
19.7
19.7
19.6
19.6
19.8
19.7
-94.5
19.8
-93.9
19.8
-93.8
19.4
-94.8
19.4
-92.5
19.8
-91.3
20.8
-86.4
mV/dB
dBm
dBV
Output Intercept
Output Intercept
-110
-9.9
-110.2 -110.6 -110.6 -110.0
-11.9 -11.3 -11.3 -11.3
Temperature
Sensitivity @ -43 dBV Input [2]
mdBV/°C
Temperature
Sensitivity @ -30 dBm Input [2]
-12.5
-12.2
-11.7
-11.2
-11.7
-12.1
-13.4 mdBm/°C
[1] Detector mode measurements; LOGOUT (Pin 17) is shorted to VSET (Pin 18).
[2] Measured from T = -45C to T = +85C, Vdd1, Vdd2 = 5V
A
A
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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