Frequency Dividers & Detectors - SMT
v09.0114
Typical Applications
4
Programmable divider for offset synthesizer and...
Frequency Dividers & Detectors - SMT
v09.0114
Typical Applications
4
Programmable divider for offset synthesizer and variable divide by N applications:
Satellite Communication Systems
Point-to-Point and Point-to-Multi-Point Radios
LMDS
SONET
Functional Diagram
HMC394LP4 / 394LP4E
GaAs HBT PROGRAMMABLE 5-BIT COUNTER, DC - 2.2 GHz
Features
SSB Phase Noise: -153 dBc/Hz @ 100 kHz Selectable Division from 2 to 32 Parallel 5-Bit Control Wide Input Power Range: -20 to +10 dBm 24 Lead 4x4mm QFN Package: 9 mm²
General Description
The HMC394LP4 & HMC394LP4E are low noise GaAs HBT programmable 5-bit counters in 4 x 4mm leadless surface mount packages. This device allows continuous division from N= 2 to 32 at input frequencies up to 2.2 GHz. The output
voltage swing is 800 mV with a duty cycle inversely proportional to N. The low additive SSB phase noise of -153 dBc/Hz at 100 KHz offset makes this counter an excellent choice for low noise synthesizer applications.
Electrical Specifications, TA = +25° C, 50 Ohm System, Vcc= 5V
Parameter
Conditions
Maximum Input Frequency
Minimum Input Frequency
Sine Wave Input [1]
Input Power Range
Fin = 0.1 to 2.2 GHz
Output Power
Divide-by-2
SSB Phase Noise
Fin = 1 GHz, N = 4
Output Transition Time
Supply Current (Icc)
1. Divider will operate down to DC for square-wave input signal.
Min.
Typ.
2.2
-15
>-20
4
-153
100
194
Max.
0.1 +10
Units GHz GHz dBm dBm dBc/Hz ps mA
4-1
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