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ATR3515 Datasheet

  • ATR3515

  • ATR3515 Preliminary [Updated 9/03. 6 Pages] 5-GHz WLAN Power...

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  • 6頁

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Features
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Frequency Range 4.9 GHz to 5.9 GHz
Linear P
OUT
Typically 21 dBm
Gain Typically 20 dB
Power Detector On-chip
V
CC
3.1 V to 3.5 V
Package: QFN16
Benefits
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Biasing Control Extends Battery Life Time
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AC Input Coupling Saves External Capacitors
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Very Suitable for PCMCIA Cards Type 1 (Thickness 3.3 mm)
5-GHz WLAN
Power Amplifier
for 802.11a
ATR3515
Preliminary
Electrostatic sensitive device.
Observe precautions for handling.
Description
Process
The 5-GHz power amplifier is designed in Atmel鈥檚 advanced Silicon-Germanium
(SiGe) process and provides excellent noise performance as well as good power-
added efficiency.
Circuitry
The PA consists of a two-stage amplifier with a linear output power of 21 dBm. The
output stage was realized using an open-collector structure. Power-up/down and out-
put level are controlled at bias control pin 6 (Vctl). An on-chip power detector provides
a voltage proportional to the output power.
Figure 1.
Block Diagram
Vcc1
15
Vcc2
13
ATR3515
RFin
3
Matching
RFout
11
RFout
10
Bias control
Power
Detector
6
Vctl
16
Vcc_ctl
7
Vdet_out
Rev. 4514G鈥揥LAN鈥?9/03

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