CC2640_15 Datasheet, PDF (31/51 Pages) Texas Instruments – CC2640 SimpleLink Bluetooth Smart Wireless MCU

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CC2640
SWRS176 – FEBRUARY 2015
7 Application Circuit
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI's customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
Few external components are required for the operation of the CC2640 device. Figure 7-1 shows a typical
application circuit. For a complete reference design, see the product folder on www.ti.com.
Optional
inductor.
Only
needed for
DCDC
operation
10uH
DCDC_SW
VDDS_DCDC
input decoupling
10uF ± 22uF
10uF
To VDDR pins
CC26xx
(GND exposed die
attached pad )
Pin 3/4 (RXTX)
Pin 2 (RF N)
Pin 1 (RF P)
24MHz
XTAL
(Load caps
on chip)
Red = Not necessary if internal bias is used
Pin 3 (RXTX)
6.8 pF
2.4 nH
1 pF
Antenna
(50 Ohm)
Pin 2 (RF N)
Pin 1 (RF P)
Differential
operation
6.2-6.8 nH
2.4-2.7 nH
2 nH
1 pF
2 nH
12 pF
1 pF
Red = Not necessary if internal bias is used
Pin 2 (RF N)
Pin 1 (RF P)
Single ended
operation
15 nH
2 nH
1.2 pF
Antenna
(50 Ohm)
12 pF
1.2 pF
Red = Not necessary if internal bias is used
Pin 3 (RXTX)
Pin 2 (RF N)
15 nH
Single ended
operation with 2
antennas
15 nH
Pin 1 (RF P)
2 nH
1.2 pF
2 nH
1.2 pF
Antenna
(50 Ohm)
12 pF
1.2 pF
Antenna
(50 Ohm)
12 pF
1.2 pF
Figure 7-1. CC2640 Application Circuit
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Application Circuit
31