SWRS293 November 2023 CC1312PSIP
PRODUCTION DATA
Figure 10-1 shows the typical application schematic using the CC1312PSIP module. For the full reference schematic, download the LP-EM-CC1312PSIP Design Files.
The following guidelines are recommended for implementation of the RF design:
Table 10-1 provides the bill of materials for a typical application using the CC1312PSIP module in Figure 10-1.
It is always recommended to insert a pi-filter (Z9, Z10 and Z11) between the RF pad and the antenna / SMA connector. When matching towards an antenna, this will minimize the mismatch losses of the antenna. A low-pass match or high-pass matching network can typically be chosen.
For the CC1312PSIP, it is recommended to use a low-pass antenna match since this will both match the antenna but will also act as a low-pass filter function as well. As can be seen in Figure 10-1, Z10 and Z11 form a low-pass antenna match on the LP-EM-CC1312PSIP that has an integrated PCB antenna.
For 902-915 MHz only, in the event that no matching components are required for the antenna or direct connection to a SMA, it is recommended to just to use a DC blocking capacitor of 100 pF. For operation at both 868/869 MHz and 902-928 MHz, then it is also recommended to use an LC filter of Z10: 3.9 nH and Z11: 3.6 pF as a low-pass filter.
For full operation reference design, see the LP-EM-CC1312PSIP Design Files.
QTY | PART REFERENCE | VALUE | MANUFACTURER | PART NUMBER | DESCRIPTION |
---|---|---|---|---|---|
1 | C57 | 100pF | Murata | GRM0335C1H101GA01D | Capacitor, Ceramic C0G/NP0, 100pF, 50V, -2%/+2%, -55DEGC/+125DEGC, 0201, SMD |
1 | U1 | CC1312PSIP | Texas Instruments | CC1312PSIP | IC, CC1312PSIP, LGA73, SMD |
1 | Z10 | 8.2nH | Murata | LQP03TN8N2J02D | Inductor, RF, Chip, Non-magnetic core, 8.2nH, -5%/+5%, 0.25A, -55DEGC/+125DEGC, 0201, SMD |
1 | Z11 | 1.8pF | Murata | GRM0335C1H1R8BA01J | Capacitor, Ceramic C0G/NP0, 1.8pF, 50V, -0.1pF/+0.1pF, -55DEGC/+125DEGC, 0201, SMD |