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Partname:AD7011ARS
Description:-0.3 to +7V; CMOS, ADC P/4 DQPSK baseband transmit port. For american digital and analog cellular telephony
Manufacturer:Analog Devices
Package:SOP
Pins:24
Oper. temp.:-40 to 85
Datasheet:PDF (279K).
Click here to download *)

The AD7011 is a complete low power, CMOS, /4 DQPSK modulator with single +5 V power supply. The part is designed to perform the baseband conversion of I and Q transmit waveforms in accordance with the American Digital Cellular Telephone system (TIA IS-54). The on-chip /4 Differential Quadrature Phase Shift Keying (DQPSK) digital modulator, which includes the root raised cosine filters, generates I and Q data in response to the transmit data stream. The AD7011 also contains ramp control envelope logic to shape the I and Q output waveforms when ramping up or down at the beginning or end of a transmit burst. Besides providing all the necessary logic to perform /4 DQPSK modulation, the part also provides reconstruction filters to smooth the DAC outputs, providing continuous time analog outputs. The AD7011 generates differential analog outputs for both the I and Q signals.

Click here to download AD7011ARS Datasheet
Click here to download AD7011ARS Datasheet
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