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MA1078-2
For DCS1800 - 20W Power Amplifier
MA1078-2
Vg(6V:PIN#12)
GND(PIN#11)
Vd(+10V:PIN#24)
RF IN
RF OUT
Vc(+24V:PIN#25)
25 PINs D-SUB
Vdet(PIN#13)
(out)
136 +/ 0.8 mm
3 mm
142 mm
70
mm
40
mm
2.6 mm
10 mm
4 HOLES
3.5 mm
64.4
+/- 0.8
mm
DESCRIPTION
The MA1078-2 is a 20W power amplifier
designed for DCS 1800, which comprises 4
stages GaAs FET and 2 stages Si bipolar
transistors, also RF power monitoring circuit.
FEATURES
s
Specified +25/+10 Volt Chracteristics
RF Output Power : +43 dBm (typ.)
Harmonics : 65 dBc typ.
s
Small Size : 70
142
40 mm
3
s
50 Ohm Input/Output Impedances
APPLICATION
s
DCS 1800 (1805 ~ 1880 MHz)
Base station
Amplifier Specifications (MA1078-2)
1. Maximum Ratings
OUTLINE DRAWING
No.
Condition
Case temperature
1
2
3
4
5
Storage temperature
Collector Voltage
Drain Voltage
Gate Voltage
Symbol
Items
Tc
Tstg
V
C
V
d
V
g
Unit
C
C
V
V
V
V
g
= 6V
V
d
= +10V
Standard
40 ~ +70
40 ~ +80
+26.0
+11.5
10.0
6
RF Input Power
P
in
dBm
11.0
MA1078-2
2. Electrical Performances
(Tc = +25C, Vc = +24V, Vd = +10V, Vg = 6V, Zg = Zl = 50
)
No.
Items
Frequency
1
Symbol
f
Unit
MHz
Standard
Condition
1880
1805
Output Power
2
P
out
dBm
+43
Output RF modulation
spectrum ; from
the carrier
3
2fo
3fo
4fo
dB
dB
dB
dB
dB
dB
dB
dB
+0.5
30
33
60
70
73
75
80
Max
Type
Min
Quiescent current
6
I
cq
A
1.5
Spurious ; in-band
out-band
4
dBm
dBm
36
30
Harmonics
5
dBc
dBc
dBc
60
65
70
100 KHz
200 KHz
250 KHz
400 KHz
600 KHz
to < 1200 KHz
1200 KHz
to < 1800 KHz
1800 KHz
to < 6000 KHz
<
= 6000 KHz
P
out
= +43 dBm
(P
in
control)
P
out
= +43 dBm
P
in
= OmW
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