CX77144 Power Amplifier Module for CDMA (887–925 MHz)

The CX77144 Power Amplifier Module (PAM) is a fully matched, 10-pin surface mount module developed for cellular handset applications utilizing Code Division Multiple Access (CDMA) and Wireless Local Loop (WLL). This small and efficient power amplifier module packs a full 887–925 MHz bandwidth coverage into a single compact package. The device meets the stringent IS95 requirements up 27.5 dBm output power and up to 27 dBm for CDMA2000. A low current digital pin (VCONT) provides improved efficiency for the low RF power range of operation. The single Gallium Arsenide (GaAs) Microwave Monolithic Integrated Circuit (MMIC) contains all active circuitry in the module. The MMIC contains on-board bias circuitry, as well as input and interstage matching circuits. The output match is realized off-chip and within the module package to optimize efficiency and power performance into a 50 Ω load. This device is manufactured with SKYWORKS’ GaAs Heterojunction Bipolar Transistor (HBT) process that provides for all positive voltage DC supply operation while maintaining high efficiency and good linearity. Primary bias to the CX77144 is supplied directly from a three-cell Ni-Cd, a single-cell Li-Ion, or other suitable battery with an output in the range of 3.2 to 4.2 volts. Power down is accomplished by setting the voltage on the low current reference pin to zero volts. No external supply side switch is needed as typical “off” leakage is a few microamperes with full primary voltage supplied from the battery.

技术特性

Low voltage positive bias supply
- 3.2 V to 4.2 V
Low VREF
- 2.85 V, nominal
Good linearity
High efficiency
Large dynamic range
10-pin package
- 4 mm x 4 mm x 1.5 mm
Power down control
Low power–state control
InGaP
CDMA2000 / IS95

应用领域 APPLICATION

CDMA for Japan
Wireless Local Loop (WLL)

订购信息 Ordering Information

CX77144

功能框图 Functional Block Diagram

应用技术支持与电子电路设计开发资源下载	版本信息	大小
CX77144 数据资料DataSheet下载:pdf	Rev.V2	2 页