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STW81100ATR Datasheet

  • STW81100ATR

  • MULTI-BAND RF FREQUENCY SYNTHESIZER WITH INTEGRATED VCOS

  • 23頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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STW81100
MULTI-BAND RF FREQUENCY SYNTHESIZER WITH
INTEGRATED VCO
S
DATASHEET
1
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Features
Integer-N Frequency Synthesizer
Dual differential integrated VCOs with
automatic center frequency calibration:
鈥?Direct Output:
3280 鈥?3900 MHz
3800 鈥?4400 MHz
鈥?Internal divider by 2:
1640 鈥?1950 MHz
1900 鈥?2200 MHz
鈥?Internal divider by 4:
820 鈥?975 MHz
950 鈥?1100 MHz
Figure 1. Package
VFQFPN28
Table 1. Order Codes
Part Number
STW81100AT
STW81100ATR
Package
VFQFPN28
VFQFPN28 in Tape & Reel
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鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
Fast lock time: 150碌s
Dual modulus prescaler (64/65) and 2
programmable counters to achieve a feedback
division ratio from 4096 to 32767.
Programmable reference frequency divider (9
bits)
Phase frequency comparator and charge pump
Programmable charge pump current
Digital Lock Detector
I
2
C bus interface with 3 bit programmable
address (1100A
2
A
1
A
0
)
3.3V Power Supply
Power down mode
Small size exposed pad VFQFPN28 package
5x5x1.0mm
Process: BICMOS 0.35碌m SiGe
tors (VCOs).
Showing high performance, high integration, low
power, and multi-band performances, STW81100
is a low cost one chip alternative to discrete PLL
and VCOs solutions.
STW81100 includes an Integer-N frequency syn-
thesizer and two fully integrated VCOs featuring
low phase noise performance and a noise floor of
-153dBc/Hz. The combination of wide frequency
range VCOs (thanks to center-frequency calibra-
tion over 32 sub-bands) and multiple output op-
tions (direct output, divided by 2 or divided by 4)
allows to cover the 820MHz-1100MHz, the
1640MHz-2200MHz and the 3280MHz-4400MHz
bands.
The STW81100 is designed with STMicroelectron-
ics advanced 0.35碌m SiGe process.
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2
Description
3
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Applications
Cellular 3G Infrastructure Equipment
Other Wireless Communication Systems
The STMicroelectronics STW81100 is an integrat-
ed RF synthesizer and voltage controlled oscilla-
April 2005
Rev. 2
1/23

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