9.3.1 General RF Specifications
The following table provides the ATSAMR30M18A general RF specifications.
Test Conditions (unless otherwise stated):
VDD = 3.3V, fRF = 914 MHz, TOP = +25°C
| Symbol | Parameter | Condition | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| fRF | Frequency range | As specified in [1] | 868.3 | 914 | 924 | MHz |
| 1 MHz spacing | 769 | — | 935 | MHz | ||
| 100 kHz spacing | 857.0 | — | 882.5 | MHz | ||
| 100 kHz spacing | 902.0 | — | 928.5 | MHz | ||
| fCH | Channel spacing |
As specified in [1] except CHANNEL = 0 | — | 2 | — | MHz |
| 1 MHz spacing | — | 1000 | — | kHz | ||
| 100 kHz spacing | — | 100 | — | kHz | ||
| fCHIP | Chip rate | BPSK as specified in [1](1) | — | 300 | — | kchip/s |
| BPSK as specified in [1](2) | — | 600 | — | kchip/s | ||
| O-QPSK as specified in [2](1) | — | 400 | — | kchip/s | ||
| O-QPSK as specified in [2], [3](2) | — | 1000 | — | kchip/s | ||
| fHDR | Header bit rate (SHR, PHR) | BPSK as specified in [1](1) | — | 20 | — | kb/s |
| BPSK as specified in [1](2) | — | 40 | — | kb/s | ||
| O-QPSK as specified in [2](1) | — | 100 | — | kb/s | ||
| O-QPSK as specified in [2], [3](2) | — | 250 | — | kb/s | ||
| fPSDU | PSDU bit rate | BPSK as specified in [1](1) | — | 20 | — | kb/s |
| BPSK as specified in [1](2) | — | 40 | — | kb/s | ||
| O-QPSK as specified in [2](1) | — | 100 | — | kb/s | ||
| O-QPSK as specified in [2], [3](2) | — | 250 | — | kb/s | ||
| OQPSK_DATA_RATE = 1(1) | — | 200 | — | kb/s | ||
| OQPSK_DATA_RATE = 2(1) | — | 400 | — | kb/s | ||
| OQPSK_DATA_RATE = 1(2) | — | 500 | — | kb/s | ||
| OQPSK_DATA_RATE = 2(2) | — | 1000 | — | kb/s | ||
| fCLK | Crystal oscillator frequency | Reference oscillator | — | 16 | — | MHz |
| fSRD |
Symbol rate deviation Reference frequency accuracy for correct functionality | PSDU bit rate | — | — | — | — |
| 20/40/100/250 kb/s | -60(3) | — | +60 | ppm | ||
| 200/400/500/1000 kb/s | -40 | — | +40 | ppm |
- TRX_CTRL_2.SUB_MODE =
0 - TRX_CTRL_2.SUB_MODE =
1 - A reference frequency accuracy of ±40 ppm is required by [1], [2], [3], [4].
