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APC330---Si4438 Low Cost RF Transceiver


APC330 is a low cost transceiver module designed for operations in the unlicensed ISM (Industrial Scientific Medical) and LPRD bands based on RFIC SI4438. Si4438 EZRadioPRO is a high-performance, low current, ISM band transceiver covering the 425 to 525 MHz frequency band for the Chinese smart meter market. The GFSK modulation, multi-channel operation, high bandwidth efficiency and anti-blocking performance make APC330 modules easy to realize the robust and reliable wireless link.

The Si4438 is specifically targeted at the Chinese meter market for reliable, long-range communication. The device exhibits exceptional output power up to +20 dBm with its integrated on-chip PA, outstanding receive sensitivity of -124 dBm while achieving extremely low active and standby current consumption.


1.Outdoor covers up to 1500meters(9600bps)

2.Frequency range 418-455MHz,470-510MHz

3.0.2MHz channel spacing


5.Economical ISM solution

6.Output power:100mW(adjustable)

7.Optional interface of UART/TTL,RS232,RS485

8.Outstanding receiver sensitivity -111dBm@10Kbps

9.High efficiency forward error correction with interleaving encoding

10.GFSK modulation

11.Main parameters can be changed by APPCON RF module software