SWRS045F January 2006 – November 2018 CC1021
PRODUCTION DATA.
REF | DESCRIPTION |
---|---|
C1 | LNA input match and DC block, see Section 5.11 |
C3 | PA output match and DC block, see Section 5.11 |
C4 | Crystal load capacitor, see Section 5.16 |
C5 | Crystal load capacitor, see Section 5.16 |
C6 | PLL loop filter capacitor |
C7 | PLL loop filter capacitor (may be omitted for highest loop bandwidth) |
C8 | PLL loop filter capacitor (may be omitted for highest loop bandwidth) |
C60 | Decoupling capacitor |
L1 | LNA match and DC bias (ground), see Section 5.11 |
L2 | PA match and DC bias (supply voltage), see Section 5.11 |
R1 | Precision resistor for current reference generator |
R2 | PLL loop filter resistor |
R3 | PLL loop filter resistor |
R10 | PA output match, see Section 5.11 |
XTAL | Crystal, see Section 5.16 |
ITEM | 433 MHz | 868 MHz | 915 MHz |
---|---|---|---|
C1(3) | 10 pF, 5%, NP0, 0402 | 47 pF, 5%, NP0, 0402 | 47 pF, 5%, NP0, 0402 |
C3(3) | 5.6 pF, 5%, NP0, 0402 | 10 pF, 5%, NP0, 0402 | 10 pF, 5%, NP0, 0402 |
C4 | 22 pF, 5%, NP0, 0402 | 22 pF, 5%, NP0, 0402 | 22 pF, 5%, NP0, 0402 |
C5 | 12 pF, 5%, NP0, 0402 | 12 pF, 5%, NP0, 0402 | 12 pF, 5%, NP0, 0402 |
C6 | 3.9 nF, 10%, X7R, 0603 | 3.9 nF, 10%, X7R, 0603 | 3.9 nF, 10%, X7R, 0603 |
C7 | 120 pF, 10%, X7R, 0402 | 120 pF, 10%, X7R, 0402 | 120 pF, 10%, X7R, 0402 |
C8 | 33 pF, 10%, X7R, 0402 | 33 pF, 10%, X7R, 0402 | 33 pF, 10%, X7R, 0402 |
C60 | 220 pF, 5%, NP0, 0402 | 220 pF, 5%, NP0, 0402 | 220 pF, 5%, NP0, 0402 |
L1(3) | 33 nH, 5%, 0402 | 82 nH, 5%, 0402 | 82 nH, 5%, 0402 |
L2(3) | 22 nH, 5%, 0402 | 3.6 nH, 5%, 0402 | 3.6 nH, 5%, 0402 |
R1 | 82 kΩ, 1%, 0402 | 82 kΩ, 1%, 0402 | 82 kΩ, 1%, 0402 |
R2 | 12 kΩ, 5%, 0402 | 12 kΩ, 5%, 0402 | 12 kΩ, 5%, 0402 |
R3 | 39 kΩ, 5%, 0402 | 39 kΩ, 5%, 0402 | 39 kΩ, 5%, 0402 |
R10 | 82 Ω, 5%, 0402 | 82 Ω, 5%, 0402 | 82 Ω, 5%, 0402 |
XTAL | 14.7456 MHz crystal, 16 pF load | 14.7456 MHz crystal, 16 pF load | 14.7456 MHz crystal, 16 pF load |
In the CC1020EMX reference design, which is also applicable for the CC1021 device, LQG15HS series inductors from Murata have been used. The switch is SW-456 from M/A-COM.
The LC filter in Figure 6-1 is inserted in the TX path only. The filter will reduce the emission of harmonics and the spurious emissions in the TX path. An alternative is to insert the LC filter between the antenna and the T/R switch as shown in Figure 6-2.
The filter will reduce the emission of harmonics and the spurious emissions in the TX path as well as increase the receiver selectivity. The sensitivity will be slightly reduced due to the insertion loss of the LC filter.