SA910 Ver la hoja de datos (PDF) - Philips Electronics
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SA910 Datasheet PDF : 13 Pages
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Philips Semiconductors
Variable gain RF predriver amplifier
Product specification
SA910
DESCRIPTION
The SA910 is a variable gain predriver amplifier designed for
handheld analog cellular telephones. When used with a UHF power
transistor, it forms a cost-effective, low-profile, surface mount power
amplifier solution (1.2W maximum PAE > 50%). The SA910
integrates power detection and control circuitry that is stabilized over
temperature and voltage. In power down mode, the SA910 draws
less than 10µA of current. The SA910 is fabricated using Philips
QUBiC BiCMOS process.
FEATURES
• MMIC BiCMOS predriver amplifier
• Low voltage 2.7 to 5.5V single supply operation
• 820 to 905MHz bandwidth
• High power gain >20dB
• High power output >23dBm (typical) @ 3V
• Efficiency = 35% (typical)
• Wide gain control range: >32dB
• Few external components required
• Integrated power detector and comparison gain control circuitry
• 50Ω input, open-collector output
• SSOP-20 package
• Integrated regulator with offset adjustment for biasing an external
output stage
PIN CONFIGURATION
VCC1 1
VREF 2
GND 3
RFIN 4
GND 5
GND 6
OUTLPF 7
GND 8
VC 9
VCC BIAS 10
20 PSENSE
19 BIASOUT
18 GND
17 RFOUT1
16 GND
15 GND
14 RFOUT2
13 GND
12 PWRUP
11 OFFSET
SR01067
APPLICATIONS
• 900MHz analog cellular
• Handheld transmitting equipment in the 820 to 905MHz frequency
range
• Cordless phone
1997 Aug 12
2
853–2021 18269
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