Silicon Labs Si4438 EZRadioPRO® Transceivers
Silicon Labs Si4438 EZRadioPRO® transceivers are high-performance, low-current transceivers covering sub-GHz frequency bands from 425MHz to 525MHz. These transceivers are targeted at the Chinese meter market for reliable long-range communication. The Si4438 transceivers exhibit exceptional output power up to +20dBm with its integrated on-chip power amplifier and outstanding receive sensitivity of -124dBm. Silicon Labs Si4438 EZRadioPRO transceivers achieve extremely low active and standby current consumption. The high output power and sensitivity results in an outstanding link budget of 144dB, allowing extended ranges and highly robust communication links.
Features
- Low BOM, easy design-in, no production alignments
- Wide range of operating supply voltage, temperature, and frequency
- 425MHz to 525MHz frequency range
- -124dBm receive sensitivity
- 2(G)FSK and OOK Modulation
- 20dBm maximum output power at the antenna (after matching network)
- Fine power steps of 0.25dB
- Low active power consumption
- Ultra-low current power-down modes
- 0.100kbps to 500kbps data rate
- Fast wake and hop times
- 1.8V to 3.6V power supply
- Excellent blocking performance
- 58dB adjacent channel
- >84dB blocking for >8MHz offset
- Integrated antenna diversity and TR switch control
- Highly configurable packet handler
- TX and RX 64-byte FIFOs
- Direct (RAW) mode operation (data and clock available on GPIOs)
- Auto Frequency Control (AFC)
- Automatic Gain Control (AGC)
- 20-pin 4mm x 4mm QFN package
Applications
- Smart metering
- Automated meter reading
- Infrastructure
- Long range backhaul communications to the collector
- Robust in-home communications to home appliances
Block Diagram
Additional Resource
Publicado: 2019-05-31
| Actualizado: 2025-08-06