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PDF ( 数据手册 , 数据表 ) STB7720L

零件编号 STB7720L
描述 2.4-2.5 GHz Silicon Linear Power Amplifier IC
制造商 ST Microelectronics
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STB7720L 数据手册, 描述, 功能
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STB7720L
2.4-2.5 GHz Silicon Linear Power Amplifier IC
FEATURES SUMMARY
EXCELLENT LINEARITY EVM 2% @ 19dBm (WITH
802.11g OFDM 54Mb/s MODULATION)
VERY LOW QUIESCENT CURRENT (60mA)
INTEGRATED LINEAR ANALOG CONTROL FOR
DC CURRENT AND OUTPUT MANAGEMENT
INTEGRATED AVERAGE CHANNEL POWER
DETECTOR
LEADLESS PACKAGE (3mmx3mm LEAD FREE)
Figure 1. Package
PRELIMINARY DATA
QFN16L (3x3)
APPLICATIONS
OPTIMIZED FOR USE IN 802.11 b/g
DESCRIPTION
The STB7720L, manufactured in the third generation of ST proprietary pure Si bipolar process, is a
three-stage linear power amplifier (PA) optimized for 802.11b/g wireless LAN (WLAN) applications in the
2.4GHz ISM band. It features 32dB of power gain and delivers 19dBm of linear output power with an EVM
degradation of only 2% under 802.11g Modulation (54Mbps).
The current consumption is as low as 125mA at 19dBm make the STB7720L a good solution for mobile
applications. It achieves less than -40dBc firstside lobe suppression and less than -52dBc secondside
lobe suppression under 802.11b modulation (11Mbps).
The device embeds a Linear Analog Control for DC current and output management and a Proprietary
Average Channel Power Detector solution. This power detector has 20dB dynamic range with 1 voltage
range and ±0.3dB accuracy under 2:1 load mismatch. It provides a buffered DC voltage proportional to
the average channel output power. Thanks to this solution we save cost and space by removing a coupler,
an op amp (usually required in a power down function) and also an integrator.
The SBT7720 is housed in QFN 3mmx3mm Leadless package.
Table 1. Order Codes
Order Codes
STB7720
Marking
7720
Package
QFN16L (3x3)
Packaging
Tape & Reel
Table 2. Absolute Maximum Ratings (Tamb = 25 oC)
Symbol
Parameter
Vcc Supply voltage
Tstb Storage temperature
Ta Operating Ambient Temperature
Pin Input Power
Table 3. Thermal Data
Rth(j-case)
Thermal Resistance Junction-Case
August 2004
Value
5.5
-55 to + 150
-30 + 85
10
Unit
V
oC
oC
dBm
TBD
REV. 1
oC/W
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STB7720L pdf, 数据表
STB7720L
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Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted
by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject
to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not
authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
The ST logo is registered trademark of STMicroelectronics
2004 STMicroelectronics - All Rights Reserved
All other names are the property of their respective owners.
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