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