The MGCM02 provides the complete IF to baseband I and Q including channel filtering for IS136/AMPS.
The receive input is at an IF frequency up to 200MHz. This is downconverted to an internal IF of 60kHz and filtered by a switched capacitor bandpass filter which also provides image rejection. The 60kHz signal is then demodulated to give baseband I and Q signals. Over 100dB of gain control is provided. The baseband outputs can be input directly to an A to D converter.
The internal FM discriminator can be used for demodulating AMPS signals. The receive path also provides RSSI.
Transmit I and Q baseband signals from D to A converters can be input directly to MGCM02 which provides reconstruction filters and a variable gain buffer.
The two PLL synthesisers are used for generation of the receive and transmit IF LO signals.
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• Dual Mode TDMA/AMPS Mobile telephones• Dual Band (PCS1900/900) TDMA/AMPS Mobile telephones• PCS 1900 TDMA Mobile Telephones
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• Complete IF to Baseband for IS136• 100dB Gain Control• Channel Filtering (30kHz)• FM Demodulator• RSSI Output• Dual IF Synthesisers• Fully Programmable via serial bus• 3 Volt operation• 49 Ball BGA package (7 x 7 mm)
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Supply Voltage .............-0.3 to 3.9V
Voltage applied to any pin ..-0.3 to Vcc + 0.3 V
Operating Temperature.... -40 °C to 100 °C
Storage Temperature ..... -55 °C to 150 °C
Max Junction Temperature......... 150 °C
ESD (Human Body Model) ........... 2kV
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