POWER DETECTORS - SMT
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For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
HMC6357MS8GE
v00.1011 54 dB, LOGARITHMIC
DETECTOR / CONTROLLER, 100 - 2700 MHz
General Description
Features
Functional Diagram
The HMC6357MS8GE Logarithmic Detector/Control-
ler is ideal for converting RF signals with frequencies
in the 100 MHz to 2700 MHz range, to a proportional
DC voltage at its output. The HMC6357MS8GE em-
ploys a successive compression technology which
delivers 54 dB of dynamic range with high conversion
accuracy over a wide input frequency range. As the in-
put signal is increased, successive ampli ers move into
saturation one by one creating an accurate approxima-
tion of the logarithm function. The outputs of a series of
detectors are summed, converted into voltage domain
and buffered to drive the OUT output. For detection
mode, the OUT pin is connected to the VSET input and
will provide a nominal logarithmic slope of 17.2 mV/dB
and an intercept of -68 dBm. The HMC6357MS8GE
can also be used in the controller mode where an ex-
ternal voltage is applied to the VSET pin to create an
AGC or APC feedback loop.
Wide Dynamic Range: up to 54 dB
High Accuracy:
±1 dB with 54 dB Range Up To 2.7 GHz
Fast Output Response Time
Supply Voltage: +2.7 to +5.5V
Power-Down Mode
Excellent Stability over Temperature
MSOP-8 SMT Package: 14.8 mm
Typical Applications
The HMC6357MS8GE is ideal for:
• Cellular Infrastructure
• WiMAX, WiBro & LTE/4G
• Power Monitoring & Control Circuitry
• Receiver Signal Strength Indication (RSSI)
• Automatic Gain & Power Control
• Military, ECM & Radar
Electrical Speci cations, TA = +25 °C, Vcc= +3V [1]
Parameter Typ. Typ. Typ. Typ. Typ. Units
Input Frequency 100 900 1900 2200 2700 MHz
±3 dB Dynamic Range 61 62 61 61 60 dB
±3 dB Dynamic Range Center -27.5 -28 -29.5 -29.5 -30 dBm
±1 dB Dynamic Range 54 54 55 57 55 dB
OU T Sl o pe 17. 2 17.0 4 16. 9 16. 9 17.01 mV/dB
OUT Intercept -68 -68.2 -69.7 -70.1 -70.7 dBm
Variation of OUT with Temperature
from -40°C to +85°C @ -20 dBm Input -1.13 -0.93 -0.78 -0.71 -0.59 dB
[1] Detector mode measurements; OUT (Pin 6) is shorted to VSET (Pin 3) through an RC network.