The R9A06G062GNP from Renesas is an RF Transceiver that operates in the sub-1 GHz bands from 863 to 928 MHz. It supports OFDM and FSK modulations compliant with IEEE802.15.4-2020 and Wi-SUN FAN1.1 profiles. The OFDM modulation provides high-speed and robust communication for IoT devices, while FSK modulation ensures compatibility with the conventional FAN1.0 profile. It supports a data rate of up to 2400 Kbps (OFDM), provides a Tx output power of 15 dBm, and has an Rx sensitivity of -109 dBm (SUN FSK). This transceiver requires a DC supply from 2.7 to 3.6 V, consumes 68 mA of current in Tx mode, 21.5 mA of current in Rx mode, and 0.5 µA of current in standby mode.
The Rx path of this transceiver is amplified by a low-noise amplifier (LNA), and down-converted to the IF range by using orthogonally modulated data I and Q. This path has high linearity, a wide dynamic range with programmable gain, and high-level on-chip channel filtering that ensures robust operation in the sub-GHz frequency band. It implements an auto gain control (AGC) algorithm by using feedback control from the digital circuit that is optimized for a high-speed response. The power detector connected to the outputs of the LNA, and baseband amplifiers (BBAs) adjusts the LNA and BBA gains to optimize IM3, frequency channel selectability, and receiver sensitivity.
In the Tx path, this transceiver generates the local signal for input to the power amplifier (PA), and the output level is specifiable in 1-dB steps so that the antenna level is within the range from -15 dBm to +15 dBm. The OFDM modulation transmitter is a zero-IF transmitter in which all circuits required for OFDM modulation transmission are integrated, including a modem and DAC in the digital circuit transmission analog circuit, and a power amplifier. This path handles signal filtering, I/Q up-conversion, high-output power amplification, and RF filtering. The output power level of the result of OFDM modulation is specifiable within the range from -19 dBm to +11 dBm.
The R9A06G062GNP is available in a 40-pin HVQFN package that measures 6 x 6 mm and is ideal for wireless communication applications in a wide range of IoT devices including smart meters and sensor networks, HEMS controllers, security and building automation, industrial monitoring and control and energy-harvesting applications.
