ACPM-7891 데이터 시트보기 (PDF) - HP => Agilent Technologies

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ACPM-7891

Tri-Band Power Amplifier Module EGSM, DCS and PCS Multi-slot GPRS

HP => Agilent Technologies 

ACPM-7891 Evaluation

There are two options available

when evaluating the ACPM-7891.

Option A is to use the fully

assembled and tested

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.

Table 1. EGSM Test Conditions.

Parameter

Symbol

Operating Frequency

Supply Voltage

f (MHz)

Vdd (V)

Input Power Level

Control Voltage

Pin (dBm)

Vapc (V)

Temperature

To (C)

Test Condition

Tx EGSM frequency range: 880 ~ 915 MHz

Nominal voltage 3.5V. Extreme voltage

conditions of 2.7V and 5.3V

2 dBm ± 2 dBm

Standard DAC output control level estimated

at 0.1 to 2.6V. Maximum Vapc level: Vdd-0.3V

-30, +25, +85°C

Table 2. DCS/PCS Test Conditions.

Parameter

Symbol

Test Condition

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.

Operating Frequency

Supply Voltage

Input Power Level

Control Voltage

Temperature

f (MHz)

Vdd (V)

Pin (dBm)

Vapc (V)

To (C)

Tx DCS frequency range: 1710 ~ 1785 MHz

Tx PCS frequency range: 1850 ~ 1910 MHz

Nominal voltage 3.5V. Extreme voltage

conditions of 2.7V and 5.3V

2 dBm ± 2 dBm

Standard DAC output control level estimated

at 0.1 to 2.6V. Maximum Vapc level: Vdd-0.3V

-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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