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T0905

ATMEL Corporation
Part Number T0905
Manufacturer ATMEL Corporation
Description General- purpose VHF/UHF Power Amplifier (135 to 600 MHz)
Published Sep 3, 2006
Detailed Description www.DataSheet4U.com Features • • • • • • 35 dBm Output Power in CW Mode High Power Added Efficiency (PAE) Single Supply...
Datasheet PDF File T0905 PDF File

T0905
T0905

Overview
www.
DataSheet4U.
com 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 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 individually, 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 possible.
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.
DataSheet4U.
com Apart from telephone applications, the T0905 can also be used for car identification systems and several other wireless communication systems.
The single supply voltage 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 VCTL1 Generalpurpose VHF/UHF Power Amplifier (135 to 600 MHz) T0905 Preliminary DataShee GAIN1 16 VCTL2 GAIN2 VCTL3 GAIN3 15 Buf3 13 14 Buf2 17 18 19 VBIAS3 11 BGOUT VCTL VCC_CTL 12 10 BG Buf1 9 8 20 VBIAS2 VB2_DC VB3_DC RFOUT/VCC3 7 RFIN1 21 GND3 Match RF1 Match RF2 Match RF3 22-25 6 5 4 3 28 27 VB3 26 GND3 GND1 VCC1 GND2 VCC2 RFIN2 Rev.
4751D–SIGE–05/04 DataSheet4U.
com DataSheet 4 U .
com www.
DataSheet4U.
com Pin Configuration Figure 2.
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