GENERAL DESCRIPTION
The AD7010 is a complete low power, CMOS, π/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 Japanese Digital Cellular Telephone system.

FEATURES
   Single +5 V Supply
      On-Chip π/4 DQPSK Modulator
      Root-Raised-Cosine Tx Filters, a = 0.5
      Two 10-Bit D/A Converters
      4th Order Reconstruction Filters
      Differential Analog Outputs
      On-Chip Ramp Up/Down Power Control
      On-Chip Tx Offset Calibration
      Very Low Power Dissipation, 30 mW typ
      Power Down Mode < 5 μA
      On-Chip Voltage Reference
   24-Pin SSOP
  
APPLICATIONS
   Japanese Digital Cellular Telephony