PRELIMINARY DATA SHEET
ECM014
US PCS Band CDMA
3.5V POWER AMPLIFIER MODULE
Features
US PCS CDMA
Quiescent Current Control
Single 3.5V Supply for 3-Cell Ni or Li-Ion Battery
28dBm CDMA Power with 38% Efficiency
16dBm CDMA Power with 9% Efficiency
Power-down Capability
Features
Temperature Compensation Circuit for Icq
Applications
3.5 V CDMA US PCS Handsets
Description
The ECM014 is a power amplifier module at 3.5V Vcc with high efficiency. This device was developed using EiC鈥檚 own
InGaP Heterojunction Bipolar Transistor (HBT) process. It is optimized for US PCS in the 1850 to 1910MHz band. It
operates from a positive voltage (3.2 - 4.2V Vcc) and includes a power-down feature. The input and output are both matched
to 50鈩? It is housed in a 6 X 6 mm Land Grid Array package. A proprietary temperature compensated bias circuit provides
nearly a constant Icq from -40擄C to +85擄C. A Q control pin switches the quiescent current to 50mA for low output power
range.
Electrical Specifications
Test Conditions: Ta = 25 C, V
CC
= +3.5 V, V
REF / PD
(reference / power-down voltage) = +2.9 V, F = 1850 to 1910 MHz
SYMBOL
PARAMETER
LIMITS
MIN.
TYP.
MAX.
UNIT
TEST CONDITION
o
Frequency
1850
1910
MHz
Gain (CDMA Modulation)
25
27
dB
Output Power (CDMA)
NOTE 1
28.5
dBm
NOTE 2
Adjacent Channel Power Rejection @ 28.5dBm
-48
-44
dBc
Alternate Channel Power Rejection @ 28.5dBm
NOTE 3
-58
-56
dBc
Power Added Efficiency (CDMA) @ 28dBm
High Power Mode
32
38
%
Low Power Efficiency (CDMA) @ 16.0dBm
Low Power Mode
7
9
%
Output Load Stability 6:1 All phase angles
-60
dBc
Tolerance for ouput VSWR Mismatch
No Damage
10:1
Low Power Mode
Quiescent Current (No RF)
I
CQ
50
65
mA
Quiescent Current (No RF)
High Power Mode
I
CQ
100
140
mA
Leakage Current (No RF) Vcc = 3.5V Vref = 0V
5
20
uA
Vref/pd Current
Ipd
1
mA
Vref/pd Supply Voltage
V
ref /pd
2.9
V
Supply Voltage
V
cc
3.2
3.5
4.2
V
Vq Voltage (High Power Mode)
Vq
0.0
0.8
V
Vq Voltage (Low Power Mode)
Vq
2.0
2.8
V
Input Return Loss
IRL
10
dB
Noise Figure
NF
5
dB
Receiver Band Noise Power
-132
-135
dBm/Hz
Harmonics, 2f, 3f, 4f
-40
dBc
Power Down On/Off Time
T
ON/OFF
<100
ns
Switching time between output power levels
T
hi/Low
6
usec
NOTE 1: Using Application Schematic. Tuned for CDMA.
NOTE 2: @ 1.25MHz offset, Pri. Ch. bandwidth =1.23MHz, Adj. Ch. bandwidth = 30KHz Pout
鈮?/div>
28.5dBm, High/Low mode
NOTE 3: @ 2.25MHz offset, Pri. Ch. bandwidth =1.23MHz, Adj. Ch. bandwidth = 30KHz Pout
鈮?/div>
28.5dBm, High/Low mode
F
G
P
ACPR
ALT CPR
PAE1
PAE2
EiC
Corp.
A Subsidiary of
EiC
Enterprises, Ltd.
45738 Northport Loop West, Fremont, CA 94538
Phone: (510) 979-8999
Fax: (510) 979-8902
www.eiccorp.com
SS-000447-000
Revision D
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