PRELIMINARY DATA SHEET
ECM018
Korea Band PCS
3.5V POWER AMPLIFIER MODULE
Features
Korea PCS CDMA
Single 3.5V Supply for 3-Cell Ni or Li-Ion Battery
28.0 dBm CDMA Power
35% CDMA Efficiency
Power-down Capability
Quiescent Current Control
Features
Wide Range Vref/pd
Low Ipd, Typically 1 mA
Better Efficiency at Low Power
Temperature compensation circuit for Icq
Applications
Description
3.5 V PCS Handsets
The ECM018 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 the Korea PCS in the 1750MHz to 1780MHz
band. It operates from a positive voltage (3 - 4V 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 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 = 1750 to 1780 MHz
SYMBOL
PARAMETER
LIMITS
MIN.
TYP.
MAX.
UNIT
TEST CONDITION
o
Frequency
1750
1780
MHz
Gain (CDMA Modulation)
25
27
dB
Output Power (CDMA)
NOTE 1
28
dBm
Adjacent Channel Power Rejection
NOTE 2
-50
dBc
Power Added Efficiency (CDMA) @ 28.0 dBm
High Power Mode
35
%
Low Power Efficiency (CDMA) @ 16.0 dBm
Low Power Mode
9
%
Output Load Stability 6:1 All phase angles
-60
dBc
Tolerance for output VSWR Mismatch
No Damage
10:1
Quiescent Current (No RF)
Low Power Mode
I
CQ
50
70
mA
Quiescent Current (No RF)
High Power Mode
I
CQ
120
150
mA
Leakage Current (No RF) Vcc = 3.5V Vref = 0V
7
20
uA
Vref/pd Supply 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
2.9
V
Input Return Loss
IRL
10
dB
Noise Figure
NF
5
dB
Noise Power
-136
-134
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>
28dBm, High/Low mode
F
G
P
ACPR
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-000446-000
Revision C
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