MGCT03 I/Q TDMA/AMPS l900/900 MHz Dual-Band Dual-Mode Transmitter

MGCT03 is a transmitter designed for dual-band, dual-mode cellular 900 MHz/PCS l 900 MHz mobile phones. It is used in both TDMA/AMPS modes and is used as a transmit modulator and up-converter in TDMA/AMPS mobile phones. MGTC03 has baseband and mixed signal interface circuits that are compatible with products from Zarlink Semiconductor and other companies. 

The main technical features are as follows: 

・The AGC circuit is divided into RF and IF parts to reduce noise and low-pass filter; 

・The AGC amplifier has a variable gain of 90 dB and is temperature compensated. 

・900 MHz and 1900 MHz dual RF ports;  

・On-chip active filter eliminates external IF SAW filter; 

・RF frequency is 750～2000 MHz; 

・I/Q quadrature modulator; 

・The power supply voltage is 4 V; 

・The operating current is 118~152 mA, the standby mode current is 8~10 mA, and the sleep mode current is 75uA; 

・Output power is 8～19 dBm．

Application circuit of MGCT03