SiW1711
0
VREFM_CAP
VREFP_CAP
VBATT_ANA
VBATT_DIG
VCC_OUT
VBB_OUT
VBB_RDY
BLUETOOTH® RADIO
MODEM
CHG_PUMP
Features
• Single chip IC with 2.4 GHz
transceiver and GFSK modem with
digital interface to external baseband
processor.
• Fully compliant with Bluetooth
specification 1.1 and 1.2.
• 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.
• Single-ended RX/TX pins reduce
system BOM cost by eliminating a
balun. On-chip RX/TX switching
eliminates external RX/TX switch.
• Typical -85 dBm receiver sensitivity
with excellent interference rejection
performance.
• Class 2 and 3 transmit output power
up to +4 dBm with output power
control loop for accurate power
control.
• Hardware AGC dynamically adjusts
receiver performance in changing
environments.
• Low out-of-band spurious emissions
prevents interference with mobile
phone frequencies.
• Option for Class 1 designs with
RX/TX switch control and multiple
modes of gain control.
• On-chip voltage regulation simplifies
voltage input requirement. Regulator
bypass mode enables use of external
regulator.
• 1.8 Volt analog and digital core
voltages; 1.63 Volt to 3.63 Volt
external I/O interface voltage.
• Low power consumption in active and
standby modes.
VDD_IO
Voltage Regulator and Power
Distribution
LNA
RF_IN
0
90
ADC
ADC
VCO/
PLL
PWR
CNTL
0
RF_OUT
DRIVER
90
DAC
GFSK
MODEM
RX_TX_DATA
CD_TXEN
IDAC
DAC
Control
XTAL_P/CLK
XTAL_N
BB_CLK
VTUNE
PLL
Control
Clock Generation and
Distribution
System
Control
Logic
Serial Programming
Interface (SPI)
Register
File
ENABLE_RM
HOP_STROBE
RESET_N
TX_RX_SWITCH
SPI_SS
SPI_TXD
SPI_RXD
SPI_CLK
Product Description
The SiW1711™ Radio Modem is Silicon Wave's third-generation radio modem for
Bluetooth® wireless communications and is based on 0.18µm CMOS technology. This
highly integrated transceiver was specifically designed to meet the rigorous RF perfor-
mance required for integrating Bluetooth into mobile phone applications.
The SiW1711 Radio Modem combines a 2.4GHz radio transceiver and Gaussian Fre-
quency Shift Keying (GFSK) modem with digital control functions. The IC also incorpo-
rates analog and digital voltage regulators, a reference Phase Lock Loop (PLL) to
enable multiple input frequencies, and a power-on-reset (POR) circuit.
The SiW1711 Radio Modem uses direct conversion (zero-IF) architecture. This allows
digital filtering for excellent interference rejection as compared to low IF solutions, and
also results in fewer spurious responses. The receiver has excellent 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 (solves
near-far issues). The transmitter can maintain a stable output power level up to +4dBm
for class 2 operation, which in combination with the excellent receiver performance
ensures the maximum possible range at the lowest system cost.
The device is available in a 32-pin QFN package with 5 x 5 x 1 mm dimensions. Known
good die with bumps is also available. Operating temperature range is guaranteed from
-40°C to +85°C with available extended high temperature range to 105°C.
Ordering Information
SiW1711
Bluetooth® Radio Modem
Optimum Technology Matching® Applied
Si BJT
Si Bi-CMOS
GaInP/HBT
GaAs HBT
SiGe HBT
GaN HEMT
GaAs MESFET
Si CMOS
SiGe Bi-CMOS
RF Micro Devices, Inc.
7628 Thorndike Road
Greensboro, NC 27409, USA
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
60 0047 R00Grf SiW1711 Radio Modem IC DS
September 30, 2004
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SiW1711
Description
The following figure shows the SiW1711 Radio Modem functional block diagram. During the receive process, the radio sig-
nal is taken from the single ended RF input pin that feeds into the low noise amplifier (LNA). The signal from the LNA is
directly down-converted to I/Q baseband, filtered with an anti-aliasing filter, and converted to digital with a high resolution
analog-to-digital converter. The critical channel filtering is done in the digital domain for stable and repeatable perfor-
mance. The signal is then processed by a high performance GFSK demodulator. The demodulator is programmable to
support baseband ICs from multiple OEMs. Within the demodulator, data detection and timing recovery circuits convert
the data for transfer to an external device. In addition, the IC has multiple internal self-calibration circuits to maintain stable
and repeatable performance from part-to-part as well as over the full temperature range.
The IC has two fully integrated regulators: one for the radio (analog regulator) and one for the digital logic (digital regula-
tor). The digital regulator can be used to supply a Bluetooth baseband controller.
Note:
Both regulators can be bypassed if external regulation is desired. When bypassing the analog regulator, the
VBATT_ANA and VCC_OUT pins must be tied together and the external analog voltage (1.8 V) should be applied to the
VBATT_ANA pin. When bypassing the digital regulator, the VBATT_DIG pin should be left unconnected and the external
digital voltage (1.8 V) should be applied to VBB_OUT pin.
The IC also provides power on reset and glitch-free clock start-up. A reference PLL can be enabled to support a number of
different reference frequencies.
Digital control functions and a programming interface provide radio modem control and a flexible interface to external Blue-
tooth link controllers.
SiW1711 Radio Modem
Single-ended LNA
and Downconverter
GFSK
Demodulator
GFSK
Modulator
Radio
Programming
and Control
Baseband
Modem I/F
& Data
ADC
Single-ended Driver
DAC
and Upconverter
SiW1750 or SiW1760
(or any compatible
Bluetooth controller)
Host I/F
Reference Clock
or
Crystal Input
Reference
PLL
Modem
Clock
Generator
Analog
Regulator
SPI
XTAL
Circuit
Ext Power
Digital
Regulator
Bluetooth Subsystem Using the SiW1711 Radio Modem
Radio Interface
The RF_IN and RF_OUT signals are combined using a simple matching circuit and then connected to a filter and the
antenna. The signals are single-ended to save the cost and space of a balun.
An internal power control loop maintains a very stable RF_OUT signal level over the full temperature range and from part
to part. This means predictable and repeatable range at any temperature.
For class 1 operation, the TX_RX_SWITCH and IDAC signals can be used to control a RX/TX switch and the gain of an
external PA. This interface is programmable. Features include control of signal polarity, 3 modes of gain control and full
programmability to linearize the PA gain control curve.
Modem Interface
The modem interface transfers the Bluetooth data between the SiW1711 Radio Modem and an external controller. For ref-
erence purposes, the pin description table provides a brief description of typical interface modes.
Clock Signals
Multiple reference clock frequencies (using either a crystal or an external reference source) can be used as a reference for
the RF circuits, to synthesize clocks for most of the internal digital circuits, and to supply external processors with timing
signals.
Serial Programming Interface (SPI)
The serial programming interface (SPI) is used to access the internal registers of the SiW1711 Radio Modem. The SPI is
a synchronous serial interface that can be clocked to speeds up to 8 MHz.
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60 0047 R00Grf SiW1711 Radio Modem IC DS
SiW1711
Power
The SiW1711 Radio Modem includes both analog and digital voltage regulators. Input options are based on factors such
as voltage source, where internal regulators are used, and I/O voltage.
Pin Description
The SiW1711 Radio Modem’s radio and modem interface, the serial programming interface (SPI), and a single clock input
and supply voltage are required for proper operation. The following table provides detailed listings of pin descriptions
arranged by functional groupings.
Name
Pad Type
Description
RF signal input into the receiver.
RF signal output from the transmitter.
Power control to external power amplifier. This output provides a variable current source that
can be used to control the external power amp. Leave unconnected if not used.
Output signal to indicate the current state of the radio. The polarity is programmable with the
default set as:
Low=Transmit mode.
High=Non-transmit mode.
Radio Interface Signal Description
RF_IN
Analog
RF_OUT
Analog
IDAC
Analog
TX_RX_SWITCH
CMOS output
Modem Interface Description
CMOS
RX_TX_DATA
bi-directional
CD_TXEN
CMOS
bi-directional
Received data from radio; or transmit data to radio.
Dual function carrier detect and transmit enable. This bi-directional signal can be enabled
through internal registers. During transmit, this pin can be used as an INPUT to indicate valid
transmit data (TXEN). During receive, this pin can be used as an OUTPUT to indicate carrier
detect (CD). Input only, output, or bi-directional.
Sleep/Wake control signal from baseband controller. Used to command the SiW1711 Radio
Modem from IDLE to SLEEP Mode, and to awaken the SiW1711 Radio Modem from SLEEP
mode.
Signal generated by the baseband to indicate the start of TX or RX ramp-up.
Reset for digital circuits only. State machines and internal registers reset to their default state.
This signal is an asynchronous input with a minimum pulse width requirement of 10 µs.
System clock crystal positive input or reference clock input. For additional information see the
“Crystal Requirements” and “External Reference Requirements” sections.
System clock crystal negative input. If a reference clock frequency is used, this pin should be
left unconnected.
Selectable clock output to external baseband controller. Five frequencies are supported (in
MHz): 12, 13, 16, 32, and 48. BB_CLK stops oscillating when ENABLE_RM is de-asserted
(low).
ENABLE_RM
HOP_STROBE
RESET_N
CMOS input
CMOS input
CMOS input
Clock Signals Description
XTAL_P/CLK
XTAL_N
BB_CLK
Analog
Analog
CMOS output
Serial Programming Interface Description
SPI_TXD
CMOS output
SPI data output port.
SPI_RXD
CMOS input
SPI data input port.
SPI_CLK
CMOS input
Clock input used for synchronous data transfer on the SPI bus.
SPI_SS
CMOS input
SPI slave select that enables the SiW1711 Radio Modem as the target.
Power Signals Description
VBATT_ANA
Power
VBATT_DIG
Power
VCC_OUT
Power
VBB_OUT
Power
VCC
Power
VDD_IO
VBB_RDY
Other I/O Description
VREFP_CAP
VREFN_CAP
VTUNE
CHG_PUMP
Power
CMOS output
Analog
Analog
Analog
Analog
Supply voltage to internal analog voltage regulator.
Supply voltage to internal digital voltage regulator.
Regulated output from internal analog regulator.
Regulated output from internal digital regulator.
Supply voltage to on-chip analog circuits.
Supply voltage to on-chip I/O interface.
I/O pins: BB_CLK, CD_TXEN, ENABLE_RM, HOP_STROBE, RESET_N, RX_TX_DATA,
SPI_CLK, SPI_RXD, SPI_SS, SPI_TXD, TX_RX_SWITCH
This signal is used to indicate that the internal digital regulator is stable (VBB_OUT).
Decoupling capacitor for voltage reference for the internal A/D converter.
Decoupling capacitor for voltage reference for the internal A/D converter.
Pin for reference PLL loop filter.
Pin for RF PLL loop filter.
Table 1. SiW1711 Radio Modem Pin List
60 0047 R00Grf SiW1711 Radio Modem IC DS
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SiW1711
System Specifications
Absolute Maximum Ratings
Parameter
Description
Min
Max
Unit
V
V
V
V
°C
dBm
V
CC
Analog circuit supply voltage
-0.3
3.63
V
DD_IO
I/O supply voltage
-0.3
3.63
V
BATT_ANA
Analog regulator supply voltage
-0.3
3.63
V
BATT_DIG
Digital regulator supply voltage
-0.3
3.63
T
ST
Storage temperature
-55
+125
RF
MAX
Maximum RF input level
–
+5
Absolute maximum ratings indicate limits beyond which the useful life of the device may be impaired or damage may occur.
Recommended Operating Conditions
Parameter
T
OP
T
EOP
V
BATT_ANA
V
BATT_DIG
V
CC
V
DD_IO
Description
Operating temperature (industrial grade)
Extended operating temperature
Supply for internal analog voltage regulator
Supply for internal digital voltage regulator
Analog supply voltage
Digital interface I/O supply voltage
Min
-40
-40
2.3
2.3
1.71
1.62
Max
+85
+105
3.63
3.63
1.89
3.63
Unit
°C
°C
V
V
V
V
ESD Rating
Symbol
ESD
ESD
1
Description
ESD protection - all pins
1
, human body model
ESD protection - all pins, machine model
Rating
2000 V
200 V
This device is a high performance RF integrated circuit with an ESD rating of 2,000 volts (HBM conditions per Mil-Std-883, Method
3015). Handling and assembly of this device should only be done using appropriate ESD controlled processes.
Electrical Characteristics
DC Specification
(T
OP
=+25°C, V
DD_IO
=3.0V)
Symbol
Description
V
IL
V
IH
V
OL
V
OH
I
OH
I
OL
I
ILI
Input low voltage
Input high voltage
Output low voltage
Output high voltage
Output high current
Output high current (pins 16, 19)
Output low current
Output low current (pins 16, 19)
Input leakage current
Min.
GND-0.1
0.7*V
DD_IO
GND
0.8*V
DD_IO
–
–
–
–
–
Typ.
–
–
–
–
500
4
500
4
<1
Max.
0.3*V
DD_IO
V
DD_IO
0.2*V
DD_IO
V
DD_IO
–
–
–
–
1
Unit
V
V
V
V
µA
mA
µA
mA
µA
AC Characteristics (T
OP
=+25°C, V
DD_IO
=3.0V, C
LOAD
=15pF)
Symbol
Description
t
r
t
f
Rise time
Rise time (pins 16, 19)
Fall time
Fall time (pins 16, 19)
Min.
–
–
–
–
Typ.
–
–
–
–
Max.
30
16
24
13
Unit
ns
ns
ns
ns
Current Consumption
(T
OP
=+25°C, V
BATT_ANA
, V
BATT_DIG
= 3.3 V)
Symbol
Description
I
DD_SLEEP
I
DD_IDLE
I
DD_TRANSMIT
I
DD_RECEIVE
Current during sleep mode
Current during idle, synthesizer not running
Current during continuous transmit
Current during continuous receive
Min.
–
–
–
–
Typ.
8
3
55
68
Max.
30
5
65
75
Unit
µA
mA
mA
mA
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60 0047 R00Grf SiW1711 Radio Modem IC DS
SiW1711
Digital Regulator Specification
(T
OP
= 25°C)
Parameter
Output voltage
Line regulation
Load regulation
Dropout voltage
Output maximum current
Quiescent current
Ripple rejection
(I
OUT
= 10 mA)
(I
OUT
= 0 mA, V
BATT_DIG
= 2.3 V to 3.63 V)
(I
OUT
= 3 mA to 80 mA)
(I
OUT
= 10 mA)
–
–
f
RIPPLE
= 400 Hz
Description
Min
1.55
–
–
–
–
–
–
Typ
1.85
8.0
9.0
–
–
10
40
Max
2.16
–
–
250
80
–
–
Unit
V
mV
mV
mV
mA
µA
dB
Internal Analog Voltage Regulator Specification
(T
OP
=+25°C, V
BATT_ANA
= 3.3 V
)
Parameter
Description
Min
Typ
Output voltage (40 mA load)
Ripple rejection
–
–
1.71
–
1.80
20
Max
1.89
–
Unit
V
dB
Radio Specification
Parameter
VCO operating range
PLL lock time
Frequency
–
Description
Min
2402
–
Typ
–
55
Max
2480
100
Unit
MHz
µs
RF Impedances
Parameter
1
RF impedance
1
Description
TX On
TX Off
RX On
RX Off
Min
–
–
–
–
Typ
448//0.6
53.1//2.2
267//1.1
23.4//0
Max
–
–
–
–
Unit
Ω/pF
Ω/pF
Ω/pF
Ω/pF
The impedance values are for typical samples in 32-pin QFN package.
Receiver Specification
1
(V
BATT_ANA
, V
BATT_DIG
=3.3V, V
CC
=int. analog reg. output, and nominal
2
Bluetooth test conditions)
Parameter
Receiver
sensitivity
Maximum usable signal
C/I co-channel
(0.1% BER)
C/I 1MHz
(0.1% BER)
C/I 2MHz
(0.1% BER)
C/I
≥3MHz
(0.1% BER)
Out-of-band
blocking
3
Intermodulation
Receiver spurious
emission
1
2
3
Description
BER<0.1%
BER<0.1%
Co-channel selectivity
Adjacent channel selectivity
2nd adjacent channel selectivity
3rd adjacent channel selectivity
30MHz to 2000MHz
2000MHz to 2399MHz
2498MHz to 3000MHz
3000MHz to 12.75GHz
Max interferer level to maintain 0.1% BER,
interference signals at 3 MHz and 6 MHz offset.
30MHz to 1GHz
1 GHz to 12.75 GHz
Min
–
-10
–
–
–
–
-10
-27
-27
-10
-39
–
–
Typ
-85.0
0
8.0
-4.0
-38.0
-43
–
–
–
–
-36
–
–
Max
-80.0
–
11.0
0
-35.0
-40
–
–
–
–
–
-57
-47
Unit
dBm
dBm
dB
dB
dB
dB
dBm
dBm
dBm
dBm
dBm
dBm
dBm
Measured with a proper matching circuit without bandpass filter.
Nominal and extreme Bluetooth test conditions as defined by the Bluetooth Test and Interoperability Working Group published RF Test
Specification 1.1.
Out-of-band blocking guaranteed by design.
60 0047 R00Grf SiW1711 Radio Modem IC DS
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