QPP-019 Просмотр технического описания (PDF) - Xemod -> Mprise

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QPP-019

60W, 869-894 MHz Class AB Power Stage

Xemod -> Mprise 

Performance at 28VDC & 25ºC (continued)

Parameter

Symbol Min

IMD Variation – 100 kHz to 25 MHz tone spacing

2nd Harmonic at 60W Pout(single tone)

3rd Harmonic at 60W Pout(single tone)

Group (Signal) Delay

τd

Transmission Phase Flatness

Nom

1.0

-35

-55

3.6

0.5

Max

2.0

Units

dB

dBc

dBc

ns

degrees

Notes:

This QuikPAC module requires an externally supplied gate voltage (VGS) on each gate lead (pins 1 and 5) to set the

operating point (quiescent current- IDQ) of the power transistors. VGS may be safely set to any voltage in the range listed in

the table. This permits a wide range of quiescent current to be used. Since the operating characteristics of the module will

vary as IDQ changes, the bias setting will depend on the application. The data provided in the Performance section of this

data sheet was obtained with IDQ set to a value within the range listed (a nominal value ±10%). This particular value was

chosen to optimize gain, IMD performance, and efficiency simultaneously.

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 VGS corresponding to a specific IDQ will vary from module to module and may vary between the two sides of a dual RF

module by as much as ±0.10 volts. This is due to the normal die-to-die variation in threshold voltage of LDMOS transistors.

Since the gate bias of an LDMOS transistor changes with device temperature, it may be necessary to use a VGS supply with

thermal compensation if operation over a wide temperature range is required.

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.

Package Styles

This model is available in both B1 (H10536) and B1F (H11029) package styles. Style B1F is shown for reference. Please

see the applicable outline drawing for specific dimensions.

Xemod QuikPAC Data

QPP-019

www.xemod.com

Rev A (11-21-00) Page 2 of 2

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