Datasheet > RM912-15

RM912-15

更新时间： 2024-11-17 23:32:55

品牌	Logo	应用领域
其他 - ETC		射频微波
页数	文件大小	规格书
20页	265K
描述
Amplifier. Other

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RM912-15 数据手册

RM912

Power Amplifier Module, 3–4 Volts, for CDMA/AMPS

(824–849 MHz)

Distinguishing Features

•

Low voltage positive bias supply

Good linearity

High efficiency

Dual mode operation

Large dynamic range

6-pin package

(6 x 6 x 1.5 mm)

Power down control

The RM912 dual-mode Code Division Multiple Access (CDMA)/Advanced Mobile

Phone Service (AMPS) Power Amplifier is a fully matched 6-pin surface mount

module designed for mobile units operating in the 824-849 MHz cellular bandwidth.

This device meets stringent IS95 CDMA linearity requirements to beyond 28 dBm

output power and can be driven to power output levels beyond 31 dBm for high

efficiency FM mode operation. A single 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 within the module package to optimize efficiency and power

performance into a 50 Ω load. This device is manufactured with Conexant’s Gallium

Arsenide (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 RM912 can be supplied directly from a three cell

nickel-cadmium, single cell lithium-ion, or other suitable battery with an output in the

3-4 volt range. 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.

•

Applications

•

Digital cellular (CDMA)

Analog cellular (AMPS)

Wireless local loop

Functional Block Diagram

VCC2

(4)

VREF

(3)

VCC1

(1)

Driver

Power

Stage Bias

Input

(2)

Output

(5)

Inter

Stage

Match

Input

Match

Output

Match

MMIC

MODULE

(6, 7)

GND

(6, 7)

GND

Data Sheet

100635J

October 2001

12 3 4 5 6 7...20

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