Other Parts Discussed in Thread: CC1175, CC1125, CC1120
Tool/software:
Hi TI Sub-GHz Community,
I'm developing a wearable medical device for lung water detection using 915 MHz RF sensing. After reviewing TI's Sub-GHz portfolio, I've identified CC1310 as my target solution, but need confirmation on specifications and I/Q access options.
Application Requirements:
- Wearable patch with near-field sensing at 915 MHz
- Detect small reflection changes (~0.5-2 dB) from tissue dielectric variations
- Ultra-low power for battery operation
- 1-10 Hz measurement rate
- SPI interface to external MCU
CC1310 Specification Questions:
1. Does CC1310 meet these specs?
- RSSI sensitivity: Can reliably detect 0.5-2 dB changes?
- Power consumption: Acceptable for wearable application?
- 915 MHz performance: Suitable for biomedical sensing requirements?
- Measurement stability: Repeatable RSSI over temperature/time?
2. I/Q Data Access Options:
- SWRA571 availability: Is this I/Q patch still supported for CC1310?
- Alternative methods: Any other ways to access raw I/Q data?
- External components: Recommended I/Q mixers/demodulators that interface well with CC1310?
3. Low Power Optimization:
- Duty cycling: Best practices for intermittent sensing to minimize power?
- CW mode efficiency: Power consumption during continuous wave operation?
- Sleep modes: Recommended power management for wearable applications?
4. Component Recommendations:
- External I/Q solutions: If internal I/Q access isn't available, what components do you recommend?
- Reference designs: Any application notes for similar sensing applications?
- Antenna considerations: Guidelines for 915 MHz near-field biomedical antennas?
Design Constraints:
- Medical device: Requires stable, reliable measurements
- ISM band: <10 mW output power compliance
- Size/weight: Wearable form factor critical
Is CC1310 the right choice for this application, and what's the best approach for I/Q data access?
Thanks for your guidance!
Best regards
Kaushik
