CC1150-RTY1 datasheet(53/67 Pages) TI1

53 / 67 page

CC1150

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SWRS037B – JANUARY 2006 – REVISED MARCH 2015

Table 6-2. Bill of Materials for the Application Circuit(1)

COMPONENT

VALUE @ 31 5MHz

VALUE @ 433 MHz

VALUE @ 868/915 MHz

C41

100 nF ± 10%, 0402 X5R

C51

27 pF ± 5%, 0402 NP0

C71

27 pF ± 5%, 0402 NP0

C101

6.8 pF ± 0.5 pF, 0402 NP0

3.9 pF ± 0.25 pF, 0402 NP0

1.0 pF ± 0.25 pF, 0402 NP0

C102

12 pF ± 5%, 0402 NP0

8.2 pF ± 0.5 pF, 0402 NP0

1.5 pF ± 0.25 pF, 0402 NP0

C103

6.8 pF ± 0.5 pF, 0402 NP0

5.6 pF ± 0.5pF, 0402 NP0

3.3 pF ± 0.25 pF, 0402 NP0

C104

220 pF ± 5%, 0402 NP0

100 pF ± 5%, 0402 NP0

C105

220 pF ± 5%, 0402 NP0

(12 pF ± 5%, 0402 NP0 if optionally

699 MHz filter is desired)

(47 pF ± 5%, 0402 NP0 if optionally

C106

699 MHz filter is desired)

C111

6.8 pF ± 0.5 pF, 0402 NP0

3.9 pF ± 0.25 pF, 0402 NP0

1.5 pF ± 0.25pF, 0402 NP0

L101

33 nH ± 5%, 0402 monolithic

27 nH ± 5%, 0402 monolithic

12 nH ± 5%, 0402 monolithic

L102

18 nH ± 5%, 0402 monolithic

22 nH ± 5%, 0402 monolithic

18 nH ± 5%, 0402 monolithic

L103

33 nH ± 5%, 0402 monolithic

27 nH ± 5%, 0402 monolithic

12 nH ± 5%, 0402 monolithic

(12 nH ± 5%, 0402 monolithic if

L104

optionally 699 MHz filter is desired)

L105

3.3 nH ± 5%, 0402 monolithic

L111

33 nH ± 5%, 0402 monolithic

27 nH ± 5%, 0402 monolithic

12 nH ± 5%, 0402 monolithic

L112

18 nH ± 5%, 0402 monolithic

R141

56 k

Ω ±1%, 0402

XTAL

26.0 MHz surface mount crystal

(1)

Murata LQG15HS and GRM1555C series inductors and capacitors, resistor from the Koa RK73 series, and AT-41CD2 crystal from NDK

6.2

Design Requirements

6.2.1

Bias Resistor

The bias resistor R141 is used to set an accurate bias current.

6.2.2

Balun and RF Matching

The components between the RF_N/RF_P pins and the point where the two signals are joined together

[(C111, C101, L101 and L111 for the 315/433 MHz design) and (L101, L111, C101, L102, C111, C102

and L112 for the 868/915 MHz reference design)] form a balun that converts the differential RF signal on

CC1150 to a single-ended RF signal. C104 is needed for dc blocking. Together with an appropriate LC

filter network, the balun components also transform the impedance to match a 50-

Ω antenna (or cable).

C105 provides dc blocking and is only needed if there is a dc path in the antenna. For the 868/915 MHz

reference design, this component may also be used for additional filtering, see Section 6.2.5.

Suggested values for 315 MHz, 433 MHz, and 868/915 MHz are listed in Table 6-2.

The balun and LC filter component values and their placement are important to achieve optimal

performance. It is highly recommended to follow the CC1150EM reference design (see [1] and [2]). Gerber

files and schematics for the reference designs are available for download from CC1150EM433 and

CC1150EM868.

Applications, Implementation, and Layout

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