Real‑Time Data Transmission with the CC1120: Low Latency & Coral RF Modules

Real‑time data transmission—sending information with minimal delay—is essential for industrial control, SCADA systems, live sensor monitoring, and alarm networks. The TI CC1120 is a narrowband transceiver built for low‑latency, reliable communication. Coral RF offers a range of modules based on the CC1120, making real‑time performance easy to deploy across 169–915 MHz bands.

Key Features for Real‑Time Performance

1. Fast TX/RX Turnaround

The CC1120 can switch between transmit and receive in as little as 50 µs (or up to 296 µs with full calibration). This near‑instant switching allows request‑response protocols to operate without added RF delay.

2. Hardware‑Accelerated Packet Handling

Dedicated hardware handles CRC calculation, address filtering, and packet assembly. The 128‑byte FIFOs let the radio process data while the host MCU focuses on other tasks, reducing overall latency.

3. Wake‑On‑Radio (WOR)

For battery‑powered nodes that need to respond quickly, WOR allows the receiver to periodically “sniff” for incoming packets without a full wake‑up. When a valid preamble is detected, the radio wakes the MCU. This balances low power with real‑time responsiveness.

4. Antenna Diversity

In multipath environments (factories, urban areas), antenna diversity automatically selects the better of two antennas, reducing retransmissions and maintaining consistent low latency.

Coral RF Modules for Real‑Time IoT

Coral RF builds production‑ready modules around the CC1120, all in heriting these low‑latency capabilities:

• N516AS‑B – 868/915 MHz, +27 dBm, 10+ km range, −126 dBm sensitivity. Ideal for global IoT products.

• N517AS-B – +30 dBm, 12+ km range, supports 169–915 MHz. Great for SCADA and telemetry.

• N519AS – +37 dBm (5W), 16+ km range for extreme long‑distance links.

• N518AS – +33 dBm (2W) mid‑power option across all bands.

Use Cases

• Industrial SCADA – Real‑time status and control over 10–16 km.

• Smart Metering (AMI) – Near‑real‑time consumption data from basements with −126 dBm sensitivity.

• Alarm Systems – Fast wake‑up and auto‑acknowledge ensure instant trigger notification.

Tips for Your Design

• Use data rates of 1.2–9.6 kbps for best balance of range, sensitivity, and latency.

• Enable hardware packet handling to reduce MCU overhead.

• Tune WOR intervals to match your maximum acceptable latency (e.g., 500 ms interval = 500 ms max delay).

Summary

The CC1120 delivers real‑time data transmission through fast turnaround, hardware acceleration, Wake‑On‑Radio, and antenna diversity. Coral RF modules turn these features into reliable, long‑range wireless links for industrial IoT and beyond.

Explore Coral RF CC1120 modules →

For datasheets or custom support, contact Coral RF directly.