CC2640R2L
ZHCSRK4A –APRIL 2020 –REVISED SEPTEMBER 2020
www.ti.com.cn
10 Application, Implementation, and Layout
备注
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.
10.1 Application Information
Very few external components are required for the operation of the CC2640R2L device. This section provides
some general information about the various configuration options when using the CC2640R2L in an application,
and then shows two examples of application circuits with schematics and layout. This is only a small selection of
the many application circuit examples available as complete reference designs from the product folder on
www.ti.com.
图 10-1 shows the various RF front-end configuration options. The RF front end can be used in differential- or
single-ended configurations with the options of having internal or external biasing. These options allow for
various trade-offs between cost, board space, and RF performance. Differential operation with external bias
gives the best performance while single-ended operation with internal bias gives the least amount of external
components and the lowest power consumption. Reference designs exist for each of these options.
Red = Not necessary if internal bias is used
6.8 pF
Antenna
(50 Ohm)
Pin 3 (RXTX)
2.4 nH
1 pF
To VDDR
pins
Pin 2 (RF N)
Pin 1 (RF P)
2 nH
1 pF
2 nH
6.2œ6.8 nH
2.4œ2.7 nH
10µF
12 pF
Optional
inductor.
Only
needed for
DCDC
operation
Differential
operation
1 pF
10µH
Antenna
(50 Ohm)
Red = Not necessary if internal bias is used
CC26xx
Pin 2 (RF N)
DCDC_SW
Pin 3/4 (RXTX)
Pin 2 (RF N)
Pin 1 (RF P)
15 nH
(GND exposed die
attached pad)
Pin 1 (RF P)
2 nH
VDDS_DCDC
input
decoupling
10µFœ22µF
Single ended
operation
12 pF
1.2 pF
1.2 pF
Antenna
(50 Ohm)
Red = Not necessary if internal bias is used
Pin 3 (RXTX)
15 nH
24MHz
XTAL
2 nH
Pin 2 (RF N)
(Load caps
on chip)
12 pF
1.2 pF
1.2 pF
Single ended
operation with 2
antennas
Antenna
(50 Ohm)
15 nH
2 nH
Pin 1 (RF P)
12 pF
1.2 pF
1.2 pF
Copyright © 2016, Texas Instruments Incorporated
图10-1. CC2640R2L Application Circuit
Copyright © 2023 Texas Instruments Incorporated
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