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SIW1721BFIGSR Datasheet(PDF) 9 Page - RF Micro Devices

Part No. SIW1721BFIGSR
Description  BLUETOOTH® RADIO MODEM
Download  12 Pages
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Maker  RFMD [RF Micro Devices]
Homepage  http://www.rfmd.com
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SIW1721BFIGSR Datasheet(HTML) 9 Page - RF Micro Devices

 
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SiW1721B
60 0076 R00F SiW1721B Radio Modem IC DS
Radio Modem Application Circuit for Plastic QFN Package
(SiW1721BFIG)
C11
180pF
L1
2.7nH
C4
1uF
C9
1uF
C1
8.2pF
VDD_A
C5
2.7pF
C7
0.1uF
C10
22pF
C6
0.1uF
C8
1pF
R2
47K
VDD_D
U1
SiW1721B
5 mm x 5 mm
1
2
3
4
5
6
7
8
17
18
19
20
21
22
23
24
IDAC
VREFP_CAP
VREFN_CAP
VCC_OUT
VBATT_ANA
VCC
VCC
CHG_PUMP
VBB_OUT
VBATT_DIG
RX_TX_DATA
VBB_READY
CD_TXEN
SPI_SS
HOP_STROBE
NC
FL1
LFB312G45SG2A509
4
2
OUT
I N
ANTENNA
RX_BB/TX_BB
HOP_STROBE
SPI_SS
CD_TXEN
VBB_READY
CLK_REF
SPI_MOSI
RESET_N
SPI_CLK
SPI_MIS0
C2
18pF
Y1
OSC, CRYSTAL 32MHz
1
3
C3
18pF
L2
2.2nH
Place L1 close to pin 30
of the SiW1721B.
Place
C1 as close as possible
to L1 and ensure the
ground of C1 is as close
as possible to the paddle
of the SiW1721B.
The ground for C10
needs to be as
close as possible
to the paddle of
the SiW1721B.
Keep
the traces from R2
and C10 to pin 8 of
the SiW1721B short.
C4 and C9 must have
1 ohm < ESR < 10 ohms.
C4 and C9 must have
1 ohm < ESR < 10 ohms.
ENABLE_RM
Keep the traces
from C2 and C3 to
pins 25 and 26 of
the SiW1721B short.


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