Aero
I
A
E R O
™
I
T
R A N S C E I V E R
FOR
GSM
AND
GPRS W
IRELESS
C
OMMUNICATIONS
Features
Single 8 x 8 mm package
CMOS process technology
Integrated GSM/GPRS
transceiver including:
Low-IF receiver
Universal baseband interface
Offset-PLL transmitter
Dual RF synthesizer
Integrated VCOs, frequency
synthesizers, and tuning inductors
Quad-band support:
GSM 850 Class 4, small MS
E-GSM 900 Class 4, small MS
DCS 1800 Class 1
PCS 1900 Class 1
Pin Assignments
(Top View)
Si4205-BM
(For pin description see page 33)
DIAG2
DIAG1
RFOG
23
GPRS Class 12 compliant
3-wire serial interface
2.7 V to 3.0 V operation
32
28
27
26
25
24
RFOD
22
31
21
XOUT
RXQP
XEN
RXQN
RXIP
RXIN
TXIP
TXIN
TXQP
1
2
3
4
5
6
7
29
8
9
10
11
12
13
14
RFIGN
RFIGP
RFIDN
RFIDP
RFIPN
RFIPP
GND
GND
GND
20
19
18
17
GND
GND
16
15
30
Applications
Multi-band GSM/GPRS digital cellular handsets
Multi-band GSM/GPRS wireless data modems
TXQN
VDD
SCLK
XIN
SDO
Description
The Aero
I
transceiver is a complete RF front end for multi-band GSM
and GPRS wireless communications. The transmit section interfaces
between the baseband processor and the power amplifier. The receive
section interfaces between the RF band-select SAW filters and the
baseband processor. All sensitive components, such as RF/IF VCOs,
loop filters, and tuning inductors, are completely integrated into a single
compact package.
Ordering Information:
See page 34.
Patents pending
Functional Block Diagram
GSM
DCS
ANTENNA SWITCH
LNA
LNA
LNA
0 / 90
Si4205
CHANNEL
FILTER
PGA
PGA
ADC
ADC
100 kHz
PGA
PGA
DAC
DAC
I
Q
XOUT
I
Q
BASEBAND
PCS
GSM
DCS
PCS
PA
PA
DET
RF
PLL
IF
PLL
VC-TCXO
13 or 26 MHz
XIN
AFC
Rev. 1.0 12/03
Copyright © 2003 by Silicon Laboratories
PDN
SEN
SDI
Aero I
Aero
I
2
Rev. 1.0
Aero
I
T
A B L E
Section
OF
C
O N T E N TS
Page
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Typical Application Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Frequency Synthesizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
XOUT Buffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Pin Descriptions: Si4205-BM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Package Outline: Si4205-BM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Document Change List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Rev. 1.0
3
Aero
I
Electrical Specifications
Table 1. Recommended Operating Conditions
Parameter
Ambient Temperature
DC Supply Voltage
Symbol
T
A
V
DD
Test Condition
Min
–20
2.7
Typ
25
2.85
Max
85
3.0
Unit
°C
V
Note:
All minimum and maximum specifications are guaranteed and apply across the recommended operating conditions.
Typical values apply at 2.85 V and an operating temperature of 25 °C unless otherwise stated. Parameters are tested in
production unless otherwise stated.
Table 2. Absolute Maximum Ratings
1,2
Parameter
DC Supply Voltage
Input Current
3
Input Voltage
3
Operating Temperature Range
Storage Temperature Range
RF Input Level
4
Symbol
V
DD
I
IN
V
IN
T
OP
T
STG
Value
–0.5 to 3.3
±10
–0.3 to (V
DD
+ 0.3)
–40 to 95
–55 to 150
10
Unit
V
mA
V
°C
°C
dBm
Notes:
1.
Permanent device damage may occur if the above Absolute Maximum Ratings are exceeded. Functional operation
should be restricted to the conditions as specified in the operational sections of this data sheet. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
2. The Si4205 device is high-performance RF integrated circuit with an ESD rating of < 2 kV. Handling and
assembly of this device should only be done at ESD-protected workstations.
3.
For signals SCLK, SDI, SEN, PDN, XEN, and XIN.
4.
At SAW filter output for all bands.
4
Rev. 1.0
Aero
I
Table 3. DC Characteristics
(V
DD
= 2.7 to 3.0 V, T
A
= –20 to 85 °C)
Parameter
Supply Current
1
Symbol
I
RX
I
TX
I
XOUT
I
PDN
Test Condition
Receive mode
Transmit mode
PDN = 0, XEN = 1
PDN = 0, XEN = 0,
XBUF = 0, XPD1 = 1
Min
—
—
—
—
0.7 V
DD
—
Typ
80
82
1
5
—
—
—
—
—
—
—
—
Max
111
107
2
80
—
0.3 V
DD
10
10
—
0.4
—
0.4
Unit
mA
mA
mA
µA
V
V
µA
µA
V
V
V
V
High Level Input Voltage
2
Low Level Input Voltage
2
High Level Input Current
2
Low Level Input Current
2
High Level Output Voltage
3
Low Level Output Voltage
3
High Level Output Voltage
4
Low Level Output Voltage
4
V
IH
V
IL
I
IH
I
IL
V
OH
V
OL
V
OH
V
OL
V
IH
= V
DD
= 3.0 V
V
IL
= 0 V,
V
DD
= 3.0 V
I
OH
= –500 µA
I
OL
= 500 µA
I
OH
= –10 mA
I
OL
= 10 mA
–10
–10
V
DD
–0.4
—
V
DD
–0.4
—
Notes:
1.
Measured with load on XOUT pin of 10 pF and f
REF
= 13 MHz. Limits with XEN = 1 guaranteed by characterization.
2.
For pins SCLK, SDI, SEN, XEN, and PDN.
3.
For pins SDO, XOUT.
4.
For pins DIAG1, DIAG2.
Rev. 1.0
5
