QPP-028 Просмотр технического описания (PDF) - Xemod -> Mprise
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QPP-028 Datasheet PDF : 3 Pages
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Performance at 28VDC & 25ºC (continued)
Parameter
Symbol Min
IMD Variation – 100 kHz to 25 MHz tone spacing
2nd Harmonic at 35W Pout(single tone)
-35
3rd Harmonic at 35W Pout(single tone)
-40
Group (Signal) Delay
τd
Transmission Phase Flatness
Performance at 28VDC Over Temperature
Parameter
Symbol Min
Power Output at 1 dB Compression (single tone)
P-1
Gain Variation over frequency at 7W Output (single tone)
∆G
Input Return Loss (50 Ω Ref)
IRL
11.5
Drain Efficiency at 35W PEP (two tone)
η
3rd Order IMD Product (2 tone at 35W PEP;1 MHz spacing)
Group (Signal) Delay
τd
Transmission Phase Flatness
Nom
1.0
3.5
0.5
Nom
14.0
-28
3.5
0.5
Max
2.0
Units
dB
dBc
dBc
ns
degrees
Max
-26
Units
W
dB
dB
%
dBc
ns
degrees
Notes:
This GR-version QuikPAC module has an internally regulated gate voltage that is preset at the factory. A voltage of
+12VDC (±1V) should be applied to the gate lead (pins 3). No further adjustment is required. The gate voltage is thermally
compensated for operation over the temperature range listed in the data sheet. Although the module will operate with lower
voltages applied, the internal regulator is not functioning and the specified performance may not be achieved.
Gate voltage must be applied coincident with or after application of the drain voltage to prevent potentially destructive
oscillations. Bias voltages should never be applied to a module unless it is terminated on both input and output.
The quiescent current set during manufacture will be within the range specified in the Performance section (nominal ±10%)
and is selected to balance IMD, input return loss, and efficiency. This setting is suitable for most applications. Modules
with different optimization profiles are available by special order.
Internal RF decoupling is included on all bias leads. No additional bypass elements are required, however some
applications may require energy storage on the drain leads to accommodate time-varying waveforms.
The RF leads are internally protected against DC voltages up to 100V. Care should be taken to avoid video transients that
may damage the active devices.
Xemod QuikPAC Data
QPP-028
www.xemod.com
Rev. A (07-18-01) Page 2 of 3
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