SI4201-BM Silicon Laboratories Inc, SI4201-BM Datasheet - Page 16

• Manufacturer Part Number: SI4201-BM
• Description: IC UNVRSL BASEBAND INTRFC 20MLP
• Manufacturer: Silicon Laboratories Inc

Specifications of SI4201-BM

• Frequency: 850MHz, 900MHz, 1.8GHz
• Modulation Or Protocol: GSM
• Applications: Cellular, GSM Cellular Radio
• Voltage - Supply: 2.7 V ~ 3.3 V
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Package / Case: 20-VQFN Exposed Pad, 20-HVQFN, 20-SQFN, 20-DHVQFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -
• Operating Temperature: -
• Sensitivity: -
• Memory Size: -
• Data Rate - Maximum: -
• Current - Transmitting: -
• Current - Receiving: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

Aero+
Typical Triple-Band Application Schematic
Notes:
16
XTAL_EN
XAFC
SDO
PDN
SEN
SCLK
S D I
TXIP
TXIN
TXQP
TXQN
RXQP
RXQN
RXIP
RXIN
1. Connect GND pad on bottom of U1–U3 to GND.
2. All V
3. For dual-band designs, the DCS LNA input pins (U1 pins 19–20) should be grounded. For a complete pinout, see "Pin
4. See “AN49: Aero Transceiver PCB Layout Guidelines” for details on the following:
5. XEN, XDRVEN, and XTALEN are recommended to be tied together and controlled simultaneously.
Descriptions: Si4200DB-BM" on page 39.
LNA matching network (C1–C6, L1–L3). Values should be custom tuned for a specific PCB layout and SAW filter to
optimize performance.
Differential traces between the SAW filters (Z1–Z3) and transceiver (U1) pins 17–22.
Detailed SAW filter (Z1–Z3) requirements.
L4 and PCB inductor trace L5 for frequency synthesizer (U3) pins 1–2 and 20–21.
CKP/CKN and IOP/ION differential traces between transceiver (U1) pins 1–4 and baseband interface (U2) pins 9–12.
X1 connection to U3 pins 11–12.
DD
pins may be fed from a single supply or regulator.
1
2
3
4
5
GND
RXQP
RXQN
RXIP
RXIN
C10
C9
VDD
VDD
C7
SI4201
U2
SDO
PDN
XOE
ION
IOP
15
14
13
12
11
C11
VDD
L4
C12
VDD
1
2
3
4
5
6
7
8
13/26MHz
1
2
3
4
5
6
7
8
IFLB
IFLA
PDN
XDRVEN
XDRV
GND
VDD
GND
ION
IOP
CKN
CKP
TXIP
TXIN
TXQP
TXQN
VDD
C14
Rev. 1.2
X1
SI4134T
SI4200
VDD
U3
U1
VDD
RFLC
RFLD
GND
GND
GND
SDO
RFIGN
RFIGP
RFIDN
RFIDP
RFIPN
RFOD
RFIPP
SDI
NC
VDD
VDD
24
23
22
21
20
19
18
17
C13
24
23
22
21
20
19
18
17
VDD
L5
PCB Trace
L1
L2
L3
C1
C2
C3
C4
C5
C6
OUT-
OUT+
OUT-
OUT+
OUT-
OUT+
Z1
Z2
Z3
Gnd
Gnd
Gnd
In
In
In
EGSM TX Output
DCS/PCS TX Output
EGSM RX Input
DCS RX Input
PCS RX Input