MAAPSS0113SMB MACOM [Tyco Electronics], MAAPSS0113SMB Datasheet - Page 6

• Manufacturer Part Number: MAAPSS0113SMB
• Description: DECT Power Amplifier 1880 - 1930 MHz
• Manufacturer: MACOM [Tyco Electronics]

6
ADVANCED: Data Sheets contain information regarding a product M/A-COM is considering for
development. Performance is based on target specifications, simulated results, and/or prototype
measurements. Commitment to develop is not guaranteed.
PRELIMINARY: Data Sheets contain information regarding a product M/A-COM has under develop-
ment. Performance is based on engineering tests. Specifications are typical. Mechanical outline has
been fixed. Engineering samples and/or test data may be available. Commitment to produce in
volume is not guaranteed.
DECT Power Amplifier
1880 - 1930 MHz
High Voltage Operation (3 Cells)
The MAAPSS0113 amplifier product is designed for
use in phone systems using 2 battery cells for mobile
units (3.6V charging, 2.4V nom.) or up to 3.6V
regulated for base-station units. For operation with
higher supply voltages such as in 3 cell mobile units
(4.5V charging), a dropping diode is required to
reduce the voltage to the amplifier.
schematic is shown in Figure 1.
placed between the battery supply and the three
stages of the amplifier. An example diode is the
Vishay ES1A surface mount diode. This diode has a
maximum forward current of 1A and a forward
voltage drop of 1V.
Figure 2 shows the measured affect of the dropping
diode on the supply voltage (V
Because of the approximate 1V forward drop of the
diode, the maximum supply to the amplifier is 3.6V
for a charging condition of 4.5V. Figures 3 and 4
show the power and current versus a 3 cell battery
range, respectively. The 3 cell performance with the
dropping diode is very similar to the electrical
specification at 2.4V shown on page 2. The key to
matching this data is choosing a diode with
approximately 1V forward drop.
forward drop, the maximum voltage from the battery
supply can increase from 4V to 5V.
MAAPSS0113
Figure 1.
Supply schematic for 3 cell operation showing
external dropping diode, ex. Vishay ES1A
C2
C6
T3
V
CC1
V
CC
V
BAT
T4
V
D1
CC2
C3
C7
CC
) to the amplifier.
A series diode is
Because of this
An example
V
CC3
C8
C4
M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or
information contained herein without notice.
Figure 2.
V
Figure 3.
Pout vs. 3 cell battery voltage
Figure 4.
Current vs. 3 cell battery voltage
• North America Tel: [phone] / Fax: [phone]
• Europe Tel: [phone] / Fax: [phone]
• Asia/Pacific Tel: [phone] / Fax: [phone]
CC
Visit www.macom.com for additional data sheets and product information.
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0.6
0.5
0.4
0.3
0.2
0.1
30
25
20
15
10
vs. 3 cell battery voltage with series dropping diode.
5
0
0
3.0
3.0
3.0
3.2
3.2
3.2
3.4
3.4
3.4
Nominal 3 Cell
Voltage
Battery Voltage (V)
Battery Voltage (V)
Battery Voltage (V)
3.6
3.6
3.6
3.8
3.8
3.8
M/A-COM Products
4.0
4.0
4.0
4.2
4.2
4.2
3 Cell Changing
Voltage
HPM
LPM
Rev. V1
4.4
4.4
4.4
HPM
LPM
4.6
4.6
4.6