AN1602 Freescale Semiconductor / Motorola, AN1602 Datasheet - Page 6

• Manufacturer Part Number: AN1602
• Description: AN1602 Application Note: Dual-Band PA Application w/DECT Capability Using Std RFICs
• Manufacturer: Freescale Semiconductor / Motorola

DCS Path
inductor (L1) and a series inductor realized with a microstrip
line. Drain matching is made with parallel stubs which are
added to an internal prematching. A decoupling circuit is
made with 0603 22 pF capacitors.
ELECTRICAL CHARACTERISTICS
T
Table 1. Minimum and Typical Performances for GSM Path at 3.6 V
6
A
Frequency Range
Output Power
Power Added Efficiency
Input VSWR
Harmonic Output
Negative Supply Current
Output Power at Low Voltage (V
Output Power, Isolation (V
3.0 dB V
Noise Power in 100 kHz, 925 to 935 MHz
Load Mismatch Stress (P
Stability – Spurious Output (P
The input match circuit is made with a single parallel
= 25 C unless otherwise noted)
Load VSWR = 10:1 at any Phase Angle, V
VSWR = 6:1 at any Phase Angle, Source VSWR = 3:1, at any Phase Angle,
V
D1,
2nd f
3rd f
V
DD
D2
o
o
Bandwidth (V
Adjusted for Specified P
D1
in
D1
Figure 5. Gain (1), Isolation (2) and Return Loss for GSM Path at 3.6 V
= 10 to 13 dBm, P
, V
, V
in
D2
D2
= 10 to 13 dBm, P
D1
= 0 to 6.0 V)
Characteristic
= 0 V)
, V
out)
Freescale Semiconductor, Inc.
D2
For More Information On This Product,
= 3.0 V)
(V
D1
D1,
, V
out
D2
V
= 5.0 to 35 dBm,
D2
out
= 3.6 V, P
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Adjusted for Specified P
= 5.0 to 35 dBm, Load
in
= 10 dBm, Peak Measurement at 12.5% Duty Cycle, 4.6 ms Period,
MOTOROLA SEMICONDUCTOR APPLICATION INFORMATION
inductor and C31 capacitor allow for optimized efficiency,
while impacting harmonic impedances in the output transistor
plane. Like in the GSM PA, this inductor has to exhibit a
high–Q and a high maximum current. Typical gain and return
loss at rated power are given in Figure 6 for GSM path (Figure
19 for the 4.8 V application).
out
The output matching circuit is similar to the GSM one. L2
)
No Degradation in Output Power after Returning to
32.5
Min
880
1.0
34
43
–
–
–
–
–
–
–
Standard Conditions
34.5
Typ
–20
2:1
33
–
–
–
–
–
–
–
–
Max
915
–30
–35
–15
–90
–60
1.0
–
–
–
–
–
VSWR
Unit
MHz
dBm
dBm
dBm
MHz
dBm
dBc
dBc
mA
%