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PRODUCT DESCRIPTION

The AD6622 comprises four identical digital Transmit Signal Processors (TSPs) complete with synchronization circuitry and cascadable wideband channel summation. An external digitalto-analog converter (DAC) is all that is required to complete a wide band digital up-converter. On-chip tuners allow the relative phase and frequency for each RF carrier to be independently controlled.

FEATURES

Wideband Digital IF Parallel Output

Wideband Digital IF Parallel Input

Allows Cascade of Chips for Additional Channels

Programmable IF and Modulation for Each Channel

Programmable Interpolating RAM Coefficient Filter

High-Speed CIC Interpolating Filter

NCO Frequency Translation

Worst Spur Better than 100 dBc

Tuning Resolution Better than 0.02 Hz

Real or Complex Outputs

Digital Summation of Channels

Clipped or Wrapped Overrange

Two’s Complement or Offset Binary Output

Separate 3-Wire Serial Data Input for Each Channel

Microprocessor Control

JTAG Boundary Scan

APPLICATIONS

Cellular/PCS Base Stations

Micro/Pico Cell Base Stations

WBCDMA

Wireless Local Loop Base Stations

Phase Array Beam Forming Antennas