HMC610LP4 Datasheet, PDF (1/12 Pages) Hittite Microwave Corporation – 70 dB RMS POWER DETECTOR, DC - 3.9 GHz

v02.0607
Typical Applications
The HMC610LP4(E) is ideal for:
• Cellular / PCS / 3G
• WiMAX, WiBro, Fixed Wireless, & Military
• RF & Microwave Instrumentation
8
• Power Amplifier Linearization / Control Loops
• Transmitter Power Control
• Transmitter Signal Strength Indication
Functional Diagram
HMC610LP4 / 610LP4E
70 dB RMS POWER
DETECTOR, DC - 3.9 GHz
Features
Accurate RMS-to-DC Conversion: DC to 3.9 GHz^[1]
Input Dynamic Range of >70 dB:
-60 to +10 dBm in 50 Ohms
Waveform & Modulation Independent:
GSM / CDMA / TDMA
Linear-in-dB Output: Scaled 37 mV/dB
Operates from 4.5 to 5.5V from -40°C to +85°C
Power-Down Mode
Compact 4x4mm Leadless SMT Package
General Description
The HMC610LP4(E) is a true RMS power detector
capable of providing a ±1 dB measurement dynamic
range of more than 70 dB. It converts any RF input
signal at its differential input, regardless of modulation
or waveform complexity, to an accurately scaled linear-
in-dB output response that is equivalent to the Root-
Mean-Square (RMS) of the input waveform.
For normal operation, the RMSOUT pin is shorted to
the VSET input, and will provide a nominal logarithmic
slope of 37 mV/dB and an intercept of -70 dBm for
frequencies up to 2 GHz; other slopes are achieved
with external resistors connected between RMSOUT
and VSET pins. Temperature stability is excellent
with ±0.5 dB error from -40°C to 85°C maintained from
100 MHz to 3.9 GHz.
Electrical Specifications, T_A = +25C, Vcc= 5V, Zo= 50Ω ^[2]
Parameter
Typ.
Input Frequency
900
Dynamic Range
± 1dB linearity, CW Input
73
Deviation vs. Temperature
Deviation from output @ 25°C, -45°C < TA < 85°C; Pin = -50dBm -0.9
Deviation from output @ 25°C, -45°C < TA < 85°C; Pin = -20dBm 0.5
Deviation from output @ 25°C, -45°C < TA < 85°C; Pin = 5dBm
0.8
Typ.
1900
72
-1.1
0.3
0.5
Typ.
2200
71
-1.2
0.2
0.4
Typ.
2700
Typ.
3000
Typ.
3500
Typ.
3900
68
65
56
42
-1.5
-0.8
-0.8
-1.0
0.3
0.6
0.4
0.3
0.8
1.2
1.3
1.3
Units
MHz
dB
dB
dB
dB
[1] Low frequency operation determined by external components
[2] Differential Input Drive Via 1:1 Balun Transformer, VTGT Connected to VREF, RMSOUT Connected to VSET, Unless Otherwise Noted.
8 - 32
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: [phone] Fax: [phone]
Order On-line at www.hittite.com