ST DB-900-80W User Manual
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DB-900-80W
80W / 26V / 869-894 MHz PA using 2x PD57045S The LdmoST FAMILY
PRELIMINARY DATA
RF POWER AMPLIFIER DEMOBOARD USING TWO N-CHANNEL ENHANCEMENT-MODE LATERAL MOSFETs
•EXCELLENT THERMAL STABILITY
•COMMON SOURCE CONFIGURATION
•POUT = 80 W min. with 13 dB gain over 869-894 MHz
•10:1 LOAD VSWR CAPABILITY
•BeO FREE AMPLIFIER
TYPICAL CDMA PERFORMANCE:
IS-95 CD MA / 9ch FWD
Pout = 14W
Gain = 13 dB
Nd = 22%
ACPR (750 KHz) : -45 dBc
ACPR (1.98 MHz) : -60 dBc
DESCRIPTION
The DB-900-80W is a common source N-Channel enhancement-mode lateral Field-Effect RF power amplifier designed for IS-54/-136 & IS-95 base station applications.
The DB-900-80W is designed in cooperation with Europeenne de Telecomunications S.A. (www.etsa.rf), for high gain and broadband performance operating in common source mode at 26 V, capable of withstanding load mismatch up to 10:1 all phases and with harmonics lower than 30 dBc.
ABSOLUTE MAXIMUM RATINGS (TCASE = 25oC)
ORDER CODE
DB-900-80W
MECH. SPECIFICATION L=80 mm W=50 mm H=10 mm
Symbol |
Parameter |
Value |
Unit |
|
|
|
|
VDD |
Supply voltage |
32 |
V |
|
|
|
|
ID |
Drain Current |
9 |
A |
PDISS |
Power dissipation at Tcase = +85°C |
135 |
W |
|
|
|
|
TCASE |
Operating Case Temperature |
-20 to +85 |
oC |
Pamb |
Max. Ambient Temperature |
+55 |
oC |
November, 20 2002 |
1/6 |
DB-900-80W
ELECTRICAL SPECIFICATION (Tamb = +25oC, Vdd = 26V, Idq = 2 x 200 mA)
Symbol |
Test Conditions |
Min. |
Typ. |
Max. |
Unit |
|
|
|
|
|
|
FREQ. |
Frequency Range |
869 |
|
894 |
MHz |
|
|
|
|
|
|
Gain |
POUT = 80 W |
13 |
14 |
|
dB |
|
|
|
|
|
|
P1dB |
Over frequency range: 869 - 894 MHz |
80 |
90 |
|
W |
|
|
|
|
|
|
Flatness |
Over frequency range and @ POUT = 80 W |
|
|
+/- 0.5 |
dB |
|
|
|
|
|
|
Flatness |
POUT from 0.1W to 80 W |
|
|
1 |
dB |
|
|
|
|
|
|
ND at P1dB |
P1dB |
45 |
50 |
|
% |
|
|
|
|
|
|
IRTL |
Input return Loss POUT from 0.1W to 80 W |
|
-20 |
-15 |
dB |
|
|
|
|
|
|
Harmonic |
POUT = 80 W |
|
-40 |
-30 |
dBc |
|
|
|
|
|
|
VSWR |
Load Mismatch all phases @ POUT = 80 W |
10:1 |
|
|
|
|
|
|
|
|
|
Spurious |
10:1 VSWR all phases and POUT from 0.1 to 80W |
|
|
-76 |
dBc |
|
|
|
|
|
|
IMD3 |
POUT = 80 WPEP |
|
|
-25 |
dBc |
|
|
|
|
|
|
TYPICAL CDMA PERFORMANCE IS 95 / 9ch FWD (Vdd = 26V, Idq = 300mA)
Frequency |
Pout |
Pin |
Pout |
ACPR |
ACPR |
ACPR |
ACPR |
Itotal |
Nd |
|
CH PWR |
CH PWR |
CH PWR |
-750 KHz |
+750 KHz |
-1.98 MHz |
+1.98 MHz |
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(MHz) |
(W) |
(dBm) |
(dBm) |
(dBc) |
(dBc) |
(dBc) |
(dBc) |
(A) |
(%) |
|
|
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|
|
|
|
|
|
|
|
|
865 |
0.63 |
16.3 |
28.0 |
50.5 |
51.5 |
71 |
70 |
0.64 |
3.79 |
|
|
|
|
|
|
|
|
|
|
|
|
875 |
0.63 |
15.7 |
28.0 |
52.0 |
53.0 |
71 |
71 |
0.61 |
3.98 |
|
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|
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|
885 |
0.63 |
15.3 |
28.0 |
54.0 |
55.0 |
71 |
71 |
0.60 |
4.04 |
|
|
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|
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|
895 |
0.63 |
14.9 |
28.0 |
55.0 |
54.5 |
72 |
72 |
0.58 |
4.18 |
|
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|
865 |
3.98 |
23.3 |
36.0 |
49.0 |
51.0 |
68.0 |
68.0 |
1.42 |
10.78 |
|
|
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|
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|
875 |
3.98 |
23.0 |
36.0 |
49.5 |
51.5 |
68.0 |
68.0 |
1.37 |
11.18 |
|
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|
|
|
885 |
3.98 |
22.6 |
36.0 |
52.0 |
54.0 |
69.0 |
69.0 |
1.32 |
11.60 |
|
|
|
|
|
|
|
|
|
|
|
|
895 |
3.98 |
22.3 |
36.0 |
52.0 |
54.0 |
70.0 |
70.0 |
1.26 |
12.15 |
|
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|
865 |
15.85 |
28.9 |
42.0 |
45 |
45 |
63 |
63 |
2.76 |
22.09 |
|
|
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|
|
|
|
|
|
|
|
|
875 |
14.79 |
28.3 |
41.7 |
45 |
45 |
64 |
64 |
2.59 |
21.96 |
|
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|
|
|
|
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|
|
|
|
885 |
14.13 |
28.2 |
41.5 |
45 |
45 |
65 |
65 |
2.50 |
21.73 |
|
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|
895 |
14.79 |
28.0 |
41.7 |
45 |
45 |
66 |
66 |
2.41 |
23.61 |
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