CC2480 datasheet(22/48 Pages) TI

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CC2480

Table 19: Overview of external components (excluding supply decoupling capacitors)

Component

Description

Single Ended 50

Ω Output

Differential Antenna

C191

32 MHz crystal load capacitor

33 pF, 5%, NP0, 0402

C211

32 MHz crystal load capacitor

27 pF, 5%, NP0, 0402

C241

Load capacitance for analogue power

supply voltage regulators

220 nF, 10%, 0402

C421

Load capacitance for digital power supply

voltage regulators

1 µF, 10%, 0402

5.6 pF, 5%, NP0, 0402

Not used

C341

DC block to antenna and match

Note: For RF connector a LP filter can be

connected between this C, the antenna

and good ground in order to remove

conducted spurious emission by using

1.8pF in parallel with 1.6nH

1.8 pF, Murata COG 0402,

GRM15

1.6 nH, Murata 0402,

LQG15HS1N6S02

C431, C441

32.768 kHz crystal load capacitor (if low-

frequency crystal is needed in application)

15 pF, 5%, NP0, 0402

L321

Discrete balun and match

6.8 nH, 5%,

Monolithic/multilayer, 0402

12 nH 5%,

Monolithic/multilayer, 0402

L331

Discrete balun and match

22 nH, 5%,

Monolithic/multilayer, 0402

27 nH, 5%,

Monolithic/multilayer, 0402

L341

Discrete balun and match

1.8 nH, +/-0.3 nH,

Monolithic/multilayer, 0402

Not used

R221

Precision resistor for current reference

generator to system-on-chip part

56 k

Ω, 1%, 0402

56 k

Ω, 1%, 0402

R261

Precision resistor for current reference

generator to RF part

43 k

Ω, 1%, 0402

43 k

Ω, 1%, 0402

XTAL1

32 MHz Crystal

32 MHz crystal,

ESR < 60

Ω

32 MHz crystal,

ESR < 60

Ω

XTAL2

Optional 32.768 kHz watch crystal (if low-

frequency crystal is needed in application)

32.768 kHz crystal,

Epson MC 306.

32.768 kHz crystal,

Epson MC 306.

CC2480 Data Sheet SWRS074A

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