4.5.2 Transmitter Performance
The transmitter performance is tested under the following conditions:
- VBAT = 3.3V
- VDDIO = 3.3V
- Temp: 25°C
- Measured after RF matching network
| Parameter | Description | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| Frequency | — | 2,402 | — | 2,480 | MHz |
| Output power | Bluetooth Low Energy (GFSK) | — | 3.3 | 3.8 | dBm |
| In-band spurious emission (Bluetooth Low Energy) | N + 2 (Image frequency) | — | -33 | — | |
| N + 3 (Adjacent to image frequency) | — | -32 | — | ||
| N - 2 | — | -48 | — | ||
| N - 3 | — | -47 | — |
Note:
- Measured after RF matching network.
- The operating temperature range is -40°C to +85°C. RF performance is ensured at a room temperature of 25°C with a 2-3 dB change at the boundary conditions.
- With respect to TX power, different (higher/lower) RF output power settings may be used for specific antennas and/or enclosures, in which case re-certification may be required.
- The availability of some specific channels and/or operational frequency bands are country-dependent and must be programmed at the host product factory to match the intended destination. Regulatory bodies prohibit exposing the settings to the end user. This requirement needs to be taken care of via the host implementation.
- The RF parameters for the ATWINC3400-MR210UA are approximately 1 dB less than the values in the table. This insertion loss accounts for PCB trace losses and the filter network loss to the u.FL connector.