CG8107AA

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CG8107AA is a highly integrated, low-power and highly efficient 3G WCDMA radio frequency automatic gain controller (AGC) and transmitter output power control loop circuit developed by Chingis Technology.

The CG8107AA is designed to control the gain of the radio frequency automatic gain control (AGC) circuit in the 3G WCDMA baseband, as well as the output power of the radio frequency (RF) front end power amplifier. The device utilizes high efficiency and digital control circuits, provides an optimal solution for improving the cost performance of the 3G WCDMA baseband, and the power consumption of the 3G WCDMA AGC circuit is lower than that of the current chip products. The CG8107AA contains an ARM Cortex-M4 micro-controller core and an embedded manual calibration calibration routine, providing high integration, low power consumption, high performance and low cost for 3G WCDMA baseband AGC loop and transmitter output power control.

Application Field of CG8107AA

The CG8107AA is suitable for the needs of various 3G mobile communication baseband chips, with the accompanying front-end radio frequency components, respectively, to complete the control of the automatic gain (AGC) circuit of 3G is WCDMA, as well as the control of the output power of the radio frequency (RF) power amplifier, so that the baseband chip in the uplink transmission to complete the optimal performance control.

Working Principles of CG8107AA

The CG8107AA chip consists of three main parts: a digital control unit, an analog control unit and a self-calibration unit. The digital control unit contains the main processing unit and a Radio Frequency Interface (RFI) interface. The digital control unit controls the output of the analog control unit and the digital control interface. The self-calibration unit contains a calibration algorithm that can be implemented on the MCU core. The calibration algorithm can optimize the performance of the AGC loop to achieve the required output power and sensitivity.

The main parameters of the CG8107AA include a maximum output power of 8dBm and a gain control range of 0-40dB. The output power of the radio frequency circuit is controlled by the output power control (OPC) loop in the analog control unit, and the gain of the radio frequency circuit is controlled by the analog control unit in the AGC loop. The AGC loop is controlled by the MCU and RFI in the digital control unit. The self-calibration algorithm automatically calibrates the AGC loop and the OPC algorithm to maintain optimal performance.

In summary, the CG8107AA is a highly integrated, highly efficient and low-power 3G WCDMA radio frequency circuit controller. It can control the gain of the automatic gain control (AGC) circuit of the 3G WCDMA baseband, reduce the interference caused by the output power of the radio frequency (RF) power amplifier, and automatically calibrate The AGC loop and the OPC algorithm to maintain optimal performance, which can be applied to various 3G mobile communication baseband chips.

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