HELP4 UMTS900 (Band 8)
WCDMA, LTE Linear PAM
TM
ALT6708
Data Sheet - Rev 2.3
FEATURES
•
•
HSPA, LTE Compliant
4th Generation HELP
TM
technology
•
High Efficiency (R99 waveform):
• 40 % @ P
OUT
= +28.8 dBm
• 26 % @ P
OUT
= +17 dBm
18 % @ P
OUT
= +7.5 dBm
•
• 10 % @ P
OUT
= +3.5 dBm
• 17 % @ P
OUT
= +13.5 dBm
ALT6708
•
Low Quiescent Current: 3 mA
•
Low Leakage Current in Shutdown Mode: <5 µA
•
Internal Voltage Regulator
•
Integrated “daisy chainable” directional coupler
with CPL
IN
and CPL
OUT
port.
•
Internal DC Blocks on all RF ports
•
•
Optimized for a 50
Ω System
1.8V Control Logic
integrated in the module, thus eliminating the need of
an external coupler. The self-contained 3 mm x 3 mm
x 1 mm surface mount package incorporates matching
networks optimized for output power, efficiency, and
linearity in a 50
Ω system.
GND at Slug (pad)
M45 Package
10 Pin 3 mm x 3 mm x 1 mm
Surface Mount Module
•
RoHS Compliant Package, 260
o
C MSL-3
APPLICATIONS
•
Band 8 LTE Wireless Devices
•
Band 8 (EGSM) WCDMA/HSPA Wireless
Devices
V
BATT
1
10
V
CC
The ALT6708 HELP4
TM
PA is a 4th generation HELP
TM
product for LTE and WCDMA devices operating in
UMTS900 (Band 8) . This PA incorporates ANADIGICS’
HELP4
TM
technology to deliver exceptional efficiency
at low power levels and low quiescent current without
the need for external voltage regulators or converters.
The device is manufactured using advanced InGaP-
Plus
TM
HBT technology offering state-of-the-art
reliability, temperature stability, and ruggedness.
Three selectable bias modes that optimize efficiency
for different output power levels and a shutdown mode
with low leakage current increase handset talk and
standby time. A “daisy chainable” directional coupler is
PRODUCT DESCRIPTION
RF
IN
2
CPL
9
RF
OUT
V
MODE2
3
Bias Control
Voltage Regulation
8
CPL
IN
V
MODE1
4
7
GND
V
EN
5
6
CPL
OUT
Figure 1: Block Diagram
03/2012