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What is STB7720L?

This electronic component, produced by the manufacturer "ST Microelectronics", performs the same function as "2.4-2.5 GHz Silicon Linear Power Amplifier IC".


STB7720L Datasheet PDF - ST Microelectronics

Part Number STB7720L
Description 2.4-2.5 GHz Silicon Linear Power Amplifier IC
Manufacturers ST Microelectronics 
Logo ST Microelectronics Logo 


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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
1/8

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STB7720L equivalent
Figure 10. Circuit Schematic
Cn1
1
2
3
4
5
CON5
VEpd
Vcnt (2.9V)
Vcc (3.3V)
+ C1
10uF
Vcc (3.3V) Vcc (3.3V)
C3
100nF
C4
10pF
C8
100nF
C9
10pF
RF IN
SMA S1
C2
1.5p Vcnt (2.9V)
VEpd
1
2
3
C5
1nF 4
NC
RFIN
Vcnt
Epd
C6
1nF
C7
1uF
Vcc (3.3V)
L1
NC 12
RFout 11
RFout 10
NC 9
ELISA01
R1
10KOhm
TP1
STB7720L
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Vcc (3.3V)
C10
100nF
C11
10pF
L2
INDUCTOR
C12
8pF
C14 1pF
C13
1.5pF
RF OUT
SMA
S2
5/8


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On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for STB7720L electronic component.


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Featured Datasheets

Part NumberDescriptionMFRS
STB7720LThe function is 2.4-2.5 GHz Silicon Linear Power Amplifier IC. ST MicroelectronicsST Microelectronics

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