PBL40309 参数 Datasheet PDF下载

PBL 403 09

Application information.

DECT SINGLE ENDED POWER AMPLIFIER

When used as a single ended power amplifier, please refer to fig.7 and the test board fig. 8.

The 50

Ω

source impedance is converted to 50

Ω

differential with an LC-CL structure. Two series capacitors AC-couples the signal

to the input of PBL403 09. Suitable value of the capacitors is 1 to 5 pF in order to compensate for series inductance of the PCB and

package. Input impedance of the PBL403 09 is 50

Ω

differential.

The ideal collector load of the open collector RF output of PBL403 09 is about 11

Ω

per side. A matching and combination network to

50

Ω

single ended case is shown in fig. 7. A shunt capacitor (2.7 pF) transforms each output to 50

Ω.

Both 50

Ω

outputs are AC coupled

and then combined with an LC-CL structure to a 50

Ω

single ended output.

PA-ON

Vcc

10n

100p

100p

1.5p

3.9n

input

1.5p

1.5p

3.9n

2.7p

1.5p

68

n

68

n

33p

1.1p

5.6n

output

33p

1.1p

5.6n

PBL 403 09

2.7p

GND

Figure 7. Evaluation setup including networks for unbalanced input/output.

Figure 8. Evaluation testboard.

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