T0905 Datasheet

IC型號：
T0905
PDF描述：
General- purpose VHF/UHF Power Amplifier (135 to 600 MHz)
文件大小：
220.43KB
PDF頁數(shù)：
9頁
芯片廠家：
ATMEL

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Features

鈥?/div>

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

鈮?/div>

碌A(chǔ))

Small SMD Package (PSSOP28 with Heat Slug)

Applications

鈥?/div>

Professional Phones

Hands-free Sets

ISM Band Application

Wireless Infrastructure Preamplifiers

Description

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

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.

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鈥檚 power management.

Figure 1.

Block Diagram

VCTL1

General-

purpose

VHF/UHF Power

Amplifier

(135 to 600 MHz)

T0905

Preliminary

GAIN1

VCTL2

GAIN2

VCTL3 GAIN3

Buf3

Buf2

VBIAS3

BGOUT

VCTL

VCC_CTL

Buf1

VBIAS2

VB2_DC

VB3_DC

RFOUT/VCC3

RFIN1

GND3

Match

RF1

Match

RF2

Match

RF3

22-25

VB3

GND3

GND1 VCC1

GND2 VCC2

RFIN2

Rev. 4751D鈥揝IGE鈥?5/04

鋸子類型:
弓鋸
刀片長度:
300mm
SVHC(高度關(guān)注物質(zhì)):
No SVHC (18-Jun-2012)
每英寸齒數(shù) TPI (t):
24tpi
長度:
300mm

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