T0905

更新时间： 2024-02-05 02:56:13

品牌	Logo	应用领域
爱特美尔 - ATMEL		射频和微波射频放大器微波放大器功率放大器异步传输模式 ATM 高功率电源
页数	文件大小	规格书
9页	220K
描述
General- purpose VHF/UHF Power Amplifier (135 to 600 MHz)

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技术参数
数据手册

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T0905 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
Reach Compliance Code：	compliant	风险等级：	5.81
Is Samacsys：	N	其他特性：	IT CAN ALSO OPERATE AT 380 TO 520 MHZ
特性阻抗：	50 Ω	构造：	COMPONENT
最大输入功率 (CW)：	10 dBm	最大工作频率：	178 MHz
最小工作频率：	135 MHz	最高工作温度：	85 °C
最低工作温度：	-40 °C	射频/微波设备类型：	NARROW BAND HIGH POWER
最大电压驻波比：	2	Base Number Matches：	1

T0905 数据手册

Features

• 35 dBm Output Power in CW Mode

• High Power Added Efficiency (PAE)

• Single Supply Operation (No Negative Rail)

• Simple Analog Power Ramp Control

• Low Current Consumption in Power-down Mode (Typically ≤15 µA)

• Small SMD Package (PSSOP28 with Heat Slug)

Applications

• Professional Phones

• Hands-free Sets

• ISM Band Application

• Wireless Infrastructure Preamplifiers

General-

purpose

VHF/UHF Power

Amplifier

(135 to 600 MHz)

Description

The T0905 is a monolithic integrated power amplifier IC manufactured with Atmel’s

Silicon-Germanium (SiGe) process. Due to its open architecture, the device can be

used either as a two or three-stage amplifier. Every stage can be matched individu-

ally, thus allowing applications in a wide frequency range. The T0905 can be used

from 135 MHz up to 600 MHz in both linear and non-linear (saturated) mode. The

power gain can be set dynamically by means of an analog control input optionally for

each single stage or for the entire power amplifier. Constant gain mode is also possi-

ble. The T0905 is suited for CW mode up to 35 dBm. These features, including wide

power ramp control, make the T0905 a very flexible power amplifier for many different

applications.

T0905

Preliminary

Apart from telephone applications, the T0905 can also be used for car identification

systems and several other wireless communication systems. The single supply volt-

age operation at +3.5 V and a negligible leakage current in power-down mode enable

a remarkable simplification of the application’s power management.

Figure 1. Block Diagram

GAIN3

VCTL1

GAIN1 VCTL2 GAIN2

VCTL3

Buf2

Buf3

Buf1

VBIAS3

VBIAS2

BGOUT

VCTL

VB2_DC

VCC_CTL

VB3_DC

22-25

RF1

RF2

RF3

Match

RFOUT/VCC3

RFIN1

GND3

GND1 VCC1

GND2 VCC2

RFIN2

GND3

VB3

Rev. 4751D–SIGE–05/04

12 3 4 5 6 7...9

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