RF Micro Devices
Offers the SiW1722
TM
UltimateBlue
TM
Radio Modem
The SiW1722
TM
UltimateBlue
TM
radio modem is a third-
generation radio modem for Bluetooth
wireless com-
munications and is based on 0.18 m CMOS technology. The
highly integrated transceiver was specifically designed to meet
the rigorous RF performance required for integrating Bluetooth
technology into CDMA-based mobile phone applications.
The SiW1722 radio modem combines a 2.4 GHz radio
transceiver and Gaussian Frequency Shift Keying (GFSK)
modem with digital control functions. The IC also incorporates
analog and digital voltage regulators, a power-on-reset (POR)
circuit and a reference Phase Lock Loop (PLL) to enable
multiple input frequencies.
The SiW1722 radio modem uses direct conversion (zero-IF)
architecture. This allows digital filtering for excellent
interference rejection as compared to low IF solutions, which
have lower rejection due to analog matching limitations. The
receiver features high sensitivity due to a low noise RF design
combined with an advanced modem design. A fast hardware
AGC enables full discovery of any device within the dynamic
range of the receiver, solving near-far issues. The transmitter
can maintain a stable output power level up to +4 dBm for
class 2 operation, which in combination with the excellent
receiver performance, ensures the maximum possible range at
the lowest system cost.
Bluetooth
Technology Solutions -- SiW1722
90
0
ADC
ADC
PLL
Synthesizer
90
0
DAC
DAC
Serial
Bus
Interface
(SBI)
GFSK
MODEM
Voltage Regulator and Power
Distribution
PLL
Control
Clock
Distribution
Register
File
System
Control
Internal
50-Ohm
Match
Network
Power
Control
LNA
CDMA Chipset
with
Integrated
Bluetooth
Baseband
Modem I/F
&
Data
Control I/F
SiW1722
Block Diagram
Features
On-chip 50 Ohm RF match network with no external
impedance matching components
Fully compliant with Bluetooth specification 1.2
Digital interface to CDMA chipsets with an integrated
Bluetooth baseband
Supports multiple external reference clocks or crystal
frequencies with on-chip reference PLL
Direct-conversion architecture with no external channel
filter or VCO resonator components
Highly sensitive receiver with excellent interference
rejection performance
Hardware AGC dynamically adjusts receiver
performance in changing environments
Low out-of-band spurious emissions prevents
interference with mobile phone frequencies
Class 2 and 3 transmit output power up to +4 dBm --
output power control loop for accurate power control
On-chip voltage regulation simplifies voltage input
requirement
Low power consumption in active and standby modes
3.04.1500
Parameter Min
Typ
Max
Units
Supply voltage to on-chip regulator
2.3
--
3.63
V
Operating temperature (industrial grade)
-40
--
+85
C
Receiver sensitivity
-- -87 -- dBm
Output power, maximum
--
+2
+4
dBm
Maximum usable signal
0
--
dBm
Frequency operating range
2402
--
2480
MHz
C/I co-channel (0.1% BER)
--
+8
--
dB
C/I 1 MHz (0.1% BER)
--
-4
--
dB
C/I 2 MHz (0.1% BER)
--
-38
--
dB
C/I > 3 MHz (0.1% BER)
--
-43
--
dB
RADIO SPECIFICATIONS
7628 Thorndike Road, Greensboro, NC 27409-9421 Phone 336-664-1233 Fax 336-931-7454
RF MICRO DEVICES
, RFMD
and Enabling Wireless Connectivity
TM
are trademarks of RFMD, LLC. Silicon Wave, the diamond logo design, and the SiW product name prefix are registered trademarks
and UltimateBlue is a trademark of Silicon Wave, Inc. BLUETOOTH is a trademark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RF Micro Devices, Inc. and Silicon Wave.
All other trade names, trademarks and registered trademarks are the property of their respective owners. 2003, RFMD.
Information disclosed in this document is preliminary in nature and subject to change. RF Micro Devices. Inc. and Silicon Wave, Inc. reserve the right to make changes to products without notice, and
advises customers to verify that the information being relied on is current. These products are not designed, manufactured or intended for use in equipment for health care, life support, aircraft control
or navigation, or any other applications that require failsafe operation. RF Micro Devices. Inc. and Silicon Wave, Inc. disclaim all liability whatsoever for their use in any such applications.
For sales or technical support,
contact RFMD at 336-678-5570
or sales-support@rfmd.com
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