ACPM-7891 Evaluation
Table 1. EGSM Test Conditions.
There are two options available
when evaluating the ACPM-7891.
Option A is to use the fully
assembled and tested
Parameter
Symbol
Test Condition
Operating Frequency
Supply Voltage
f (MHz)
Vdd (V)
Tx EGSM frequency range: 880 ~ 915 MHz
Nominal voltage 3.5V. Extreme voltage
conditions of 2.7V and 5.3V
ACPM-7891 Test Board from
Agilent which includes the PA
and associated passive compo-
nents. This board can be used to
evaluate the basic performance
of the PA against the typical
electrical characteristics pro-
vided in the datasheet. All
maximum and minimum PA pa-
rameters are verified prior to
sending out this board.
Input Power Level
Control Voltage
Pin (dBm)
Vapc (V)
2 dBm 2 dBm
Standard DAC output control level estimated
at 0.1 to 2.6V. Maximum Vapc level: Vdd-0.3V
Temperature
To (C)
-30, +25, +85°C
Table 2. DCS/PCS Test Conditions.
Parameter
Symbol
Test Condition
Operating Frequency
f (MHz)
Tx DCS frequency range: 1710 ~ 1785 MHz
Tx PCS frequency range: 1850 ~ 1910 MHz
Option B allows the PA perfor-
mance to be evaluated within a
power control loop environment
by using the ACPM-7891 PA Con-
trol Board from Agilent which
incorporates the commercially
available control loop IC
LT1758-2 from Linear Technolo-
gies. This device is used as an
example; however, alternative
off-the-shelf power control ICs
are available from Linear Tech-
nologies, Analog Devices and
other suppliers. The ACPM-7891
PA Control Board can be used in
conjunction with an LT1758
Demoboard, available from Lin-
ear Technologies, which supplies
the DAC and timing functions.
Alternatively the DAC and tim-
ing functions can be supplied by
a conventional two channel func-
tion generator.
Supply Voltage
Vdd (V)
Nominal voltage 3.5V. Extreme voltage
conditions of 2.7V and 5.3V
Input Power Level
Control Voltage
Pin (dBm)
Vapc (V)
2 dBm 2 dBm
Standard DAC output control level estimated
at 0.1 to 2.6V. Maximum Vapc level: Vdd-0.3V
Temperature
To (C)
-30, +25, +85°C
Demo Board Test Conditions
For both types of demoboards, a
common set of test conditions
apply. Tables 1 and 2 detail the
test conditions for EGSM, DCS
and PCS at Vdd = +3.5V, pulse
width of 1154 µs, and a duty
cycle of 25% for a case tempera-
ture of +25°C.
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