User manual

Operation Principles:
AL7230：
AL7230 is a highly integrated RF transceiver IC for 2.4 GHz and 5 GHz dual-band 802.11a/b/g applications,
and combines all functions of the transceiver in a single chip. AL7230 also integrates on-chip PA and PLL
with embedded loop filter to help you to minimize the use of external components to design an RF
subsystem .The receive path includes two single-ended input Low Noise Amplifiers (LNA) and
down-conversion mixers with DC-offset cancellation for both 2.4GHz and 5GHz band, and a variable gain
amplifier with a baseband low-pass filter without the need of external SAW filters .The transmitter
consists of a up-conversion quadrate modulator with a baseband low pass filter, a variable gain amplifier,
and two power amplifiers with power detector and temperature sensor to complete the whole transmit
path function for both 2.4GHz and 5GHz band. A power-on calibration procedure is established to correct
the TX DC offset, filters mismatch and phase imbalance. These functions are housed in a 56-pin QFPN
package.