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